Neuroscience And Behavior Test

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Neuroscience And Behavior Test - Quiz

Test over Neuroscience and Behavior


Questions and Answers
  • 1. 

    Section 1 is the _________________.

    • A.

      Parietal Lobe

    • B.

      Frontal Lobe

    • C.

      Occipital Lobe

    • D.

      Temporal Lobe

    • E.

      Cerebellum

    • F.

      Brain Stem

    Correct Answer
    B. Frontal Lobe
    Explanation
    The correct answer is Frontal Lobe. The frontal lobe is responsible for higher cognitive functions such as decision making, problem-solving, and personality. It is involved in controlling voluntary movements and is also associated with emotions and social behavior. Additionally, the frontal lobe plays a role in language production and comprehension.

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  • 2. 

    Section 2 is the _________________.

    • A.

      Parietal Lobe

    • B.

      Frontal Lobe

    • C.

      Occipital Lobe

    • D.

      Temporal Lobe

    • E.

      Cerebellum

    • F.

      Brain Stem

    Correct Answer
    D. Temporal Lobe
    Explanation
    The temporal lobe is responsible for processing auditory information, including language, as well as memory and emotion. It is located on the sides of the brain, above the ears.

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  • 3. 

    Section 3 is the _________________.

    • A.

      Parietal Lobe

    • B.

      Frontal Lobe

    • C.

      Occipital Lobe

    • D.

      Temporal Lobe

    • E.

      Cerebellum

    • F.

      Brain Stem

    Correct Answer
    F. Brain Stem
    Explanation
    The brain stem is the correct answer because it is a part of the brain that connects the spinal cord to the rest of the brain. It is responsible for controlling basic functions such as breathing, heart rate, and blood pressure. The other options (Parietal Lobe, Frontal Lobe, Occipital Lobe, Temporal Lobe, and Cerebellum) are all different regions of the brain that have different functions, but they are not specifically related to connecting the spinal cord to the rest of the brain.

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  • 4. 

    Section 4 is the _________________.

    • A.

      Parietal Lobe

    • B.

      Frontal Lobe

    • C.

      Occipital Lobe

    • D.

      Temporal Lobe

    • E.

      Cerebellum

    • F.

      Brain Stem

    Correct Answer
    E. Cerebellum
    Explanation
    The correct answer is the Cerebellum. The cerebellum is a region in the brain that is responsible for coordinating voluntary movements, balance, and posture. It receives information from the sensory systems, the spinal cord, and other parts of the brain, and then regulates and fine-tunes motor movements. Although it is not directly involved in conscious thought or decision-making, it plays a crucial role in motor control and coordination.

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  • 5. 

    Section 5 is the _________________.

    • A.

      Parietal Lobe

    • B.

      Frontal Lobe

    • C.

      Occipital Lobe

    • D.

      Temporal Lobe

    • E.

      Cerebellum

    • F.

      Brain Stem

    Correct Answer
    C. Occipital Lobe
    Explanation
    The occipital lobe is responsible for processing visual information and is located at the back of the brain. It contains the primary visual cortex, which receives and interprets visual stimuli from the eyes. This lobe plays a crucial role in visual perception, including color, shape, and motion recognition. It also helps in the coordination of eye movements.

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  • 6. 

    Section 6 is the _________________.

    • A.

      Parietal Lobe

    • B.

      Frontal Lobe

    • C.

      Occipital Lobe

    • D.

      Temporal Lobe

    • E.

      Cerebellum

    • F.

      Brain Stem

    Correct Answer
    A. Parietal Lobe
    Explanation
    The correct answer is Parietal Lobe. The parietal lobe is responsible for processing sensory information such as touch, temperature, and pain. It also plays a role in spatial awareness and perception of objects in the environment.

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  • 7. 

    Performs the functions of hearing, speech perception and some memory.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    C. Temporal Lobe
    Explanation
    The temporal lobe is responsible for performing the functions of hearing, speech perception, and some memory. It is located on the sides of the brain, above the ears. This lobe plays a crucial role in processing auditory information, allowing us to hear and understand speech. It also helps in recognizing and remembering sounds and language. Additionally, the temporal lobe is involved in forming and retrieving long-term memories, particularly those related to personal experiences and emotions.

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  • 8. 

    Processes touch ad sensation information.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    B. Parietal Lobe
    Explanation
    The parietal lobe is responsible for processing and integrating sensory information from various parts of the body. It plays a crucial role in interpreting and understanding touch, temperature, pain, and proprioception (awareness of body position and movement). This lobe also helps with spatial awareness, perception of objects, and hand-eye coordination. Therefore, it is the most appropriate choice for a process that involves touch and sensation information.

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  • 9. 

    In most people the ceter for spoken language lies in the left side of this lobe.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    C. Temporal Lobe
    Explanation
    The temporal lobe is responsible for processing auditory information and is involved in language comprehension and production. It contains the primary auditory cortex, which receives and processes sound information. Additionally, the temporal lobe is also involved in memory formation and emotional responses. Therefore, it makes sense that the center for spoken language would be located in the left side of the temporal lobe, as language processing is a complex task that involves both auditory and cognitive functions.

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  • 10. 

    Controls posture, balance and coordination.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    A. Cerebellum
    Explanation
    The cerebellum is responsible for controlling posture, balance, and coordination. It receives information from the sensory systems, the spinal cord, and other parts of the brain to coordinate voluntary movements. It helps in maintaining balance while standing, walking, or performing any other physical activity. It also plays a crucial role in fine motor skills, such as writing or playing a musical instrument, by coordinating muscle movements. Additionally, the cerebellum is involved in cognitive functions, such as attention, language, and problem-solving, making it an essential part of the brain's overall functioning.

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  • 11. 

    Oldest and most basic brain region.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    F. Brain Stem
    Explanation
    The brain stem is the oldest and most basic brain region. It is responsible for controlling vital functions such as breathing, heart rate, and blood pressure. It connects the brain to the spinal cord and serves as a pathway for nerve fibers to travel between the two. The brain stem also plays a role in regulating sleep, wakefulness, and maintaining overall consciousness. It is considered the most primitive part of the brain and is essential for survival.

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  • 12. 

    Controls planning, reasoning, movement, and some parts of speech.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    D. Frontal Lobe
    Explanation
    The frontal lobe controls planning, reasoning, movement, and some parts of speech. It is responsible for higher cognitive functions such as decision-making, problem-solving, and social behavior. It also plays a crucial role in motor control, allowing us to perform voluntary movements and coordinate our actions. Additionally, the frontal lobe is involved in language production and comprehension, helping us to express ourselves and understand spoken and written language.

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  • 13. 

    Recieves data from the skin.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    B. Parietal Lobe
    Explanation
    The parietal lobe is responsible for processing sensory information from the skin, including touch, pressure, temperature, and pain. It integrates this information with other sensory inputs to create a perception of the body's position in space and to guide movements. This lobe also plays a role in spatial awareness, attention, and perception of objects and their properties. Therefore, it is the most suitable option for the given statement.

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  • 14. 

    Controls basic survival functions, such as breathing and heart beat.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    F. Brain Stem
    Explanation
    The brain stem is responsible for controlling basic survival functions such as breathing and heart beat. It is located at the base of the brain and connects the brain to the spinal cord. The brain stem also plays a role in regulating blood pressure, sleep, and consciousness. It is considered the most primitive part of the brain and is essential for maintaining vital bodily functions.

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  • 15. 

    The largest of the four brain lobes.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    D. Frontal Lobe
    Explanation
    The frontal lobe is the largest of the four brain lobes. It is located at the front of the brain and is responsible for higher cognitive functions such as decision-making, problem-solving, and personality. It also plays a role in motor control and speech production.

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  • 16. 

    Processes and interprets sensory information from the eyes.

    • A.

      Cerebellum

    • B.

      Parietal Lobe

    • C.

      Temporal Lobe

    • D.

      Frontal Lobe

    • E.

      Occipital Lobe

    • F.

      Brain Stem

    Correct Answer
    E. Occipital Lobe
    Explanation
    The occipital lobe is responsible for processing and interpreting sensory information from the eyes. It is primarily involved in visual perception, including the recognition of shapes, colors, and movement. This lobe plays a crucial role in allowing us to see and understand the world around us.

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  • 17. 

    The brain weighs about 6 pounds.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement "The brain weighs about 6 pounds" is false. The average weight of an adult human brain is approximately 3 pounds, not 6 pounds.

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  • 18. 

    The cerebrum fills up most of your skull.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The cerebrum is the largest part of the brain and is responsible for many important functions such as thinking, reasoning, and controlling voluntary movements. It is located in the upper part of the skull and occupies a significant amount of space within it. Therefore, it can be concluded that the statement "The cerebrum fills up most of your skull" is true.

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  • 19. 

    The cerebellum controls coordination and balance.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because the cerebellum, located at the back of the brain, is responsible for coordinating voluntary movements, maintaining balance, and controlling posture. It receives information from various sensory systems and integrates it to ensure smooth and coordinated muscle movements. Damage to the cerebellum can result in problems with coordination, balance, and fine motor skills. Therefore, it can be concluded that the cerebellum controls coordination and balance.

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  • 20. 

    The brain stem controls automatic functions such as breathing.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The brain stem is responsible for controlling automatic functions such as breathing. It is located at the base of the brain and connects the brain to the spinal cord. The brain stem contains various structures that regulate essential bodily functions, including breathing, heart rate, blood pressure, and digestion. These functions are involuntary and occur automatically without conscious effort. Therefore, the statement that the brain stem controls automatic functions such as breathing is true.

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  • 21. 

    When you are thinking hard, your brain may use up to 90% of the fuel and oxygen.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement that when you are thinking hard, your brain may use up to 90% of the fuel and oxygen is false. While it is true that the brain requires a significant amount of energy and oxygen to function properly, it does not use up to 90% of the body's fuel and oxygen when thinking hard. The brain only accounts for about 20% of the body's total oxygen consumption, and its energy demands increase slightly during cognitive tasks, but not to the extent of using 90% of the body's fuel and oxygen.

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  • 22. 

    The cortex is the wrinkled surface of the brain.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The cortex is indeed the wrinkled surface of the brain. The outer layer of the brain is composed of the cerebral cortex, which is responsible for higher cognitive functions such as thinking, memory, perception, and language. The wrinkles or folds in the cortex, known as gyri and sulci, increase the surface area of the brain, allowing for a larger number of neurons and more complex processing capabilities. Therefore, the statement "The cortex is the wrinkled surface of the brain" is true.

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  • 23. 

    The language area is chiefly on the right side of the brain.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The correct answer is False. The language area is not chiefly on the right side of the brain. In fact, the language area is primarily located in the left side of the brain for most individuals. This area, known as Broca's area and Wernicke's area, is responsible for language production and comprehension respectively. While the right side of the brain does play a role in language processing, it is not the primary area for language functions.

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  • 24. 

    The adult brain contains about 10 million nerve cells.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because the adult brain actually contains about 86 billion nerve cells, also known as neurons. This vast number of neurons allows for complex cognitive processes and the transmission of electrical signals throughout the brain.

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  • 25. 

    Nerve cells connect to one another at the synapses.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Nerve cells, also known as neurons, communicate with each other through synapses. A synapse is a small gap between two neurons where the electrical signal from one neuron is transmitted to another neuron through chemical messengers called neurotransmitters. This allows for the transmission of information throughout the nervous system, enabling various functions such as sensory perception, movement, and cognition. Therefore, it is correct to say that nerve cells connect to one another at the synapses.

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  • 26. 

    The chemicals that are released from one neuron to another are called neurotransmitters

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Neurotransmitters are chemicals that are released from one neuron to another in order to transmit signals and information between neurons. They play a crucial role in the communication and functioning of the nervous system. These neurotransmitters are released into the synapse, the small gap between neurons, and bind to specific receptors on the receiving neuron, thereby transmitting the signal. This process allows for the transmission of information throughout the nervous system, enabling various functions such as movement, cognition, and emotion. Therefore, the statement is true.

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  • 27. 

    Alzheimer’s disease causes the brain to expand and become larger than a healthy brain.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Alzheimer's disease does not cause the brain to expand and become larger than a healthy brain. In fact, it has the opposite effect. Alzheimer's disease is a progressive brain disorder that causes brain cells to degenerate and die, leading to a gradual decline in memory, thinking, and other cognitive abilities. As the disease progresses, the brain actually shrinks in size. Therefore, the statement is false.

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  • 28. 

    Abnormal clusters of protein fragments that build up between nerve cells in an Alzheimer’s patient are called trophies.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because the abnormal clusters of protein fragments that build up between nerve cells in an Alzheimer's patient are actually called plaques, not trophies. These plaques, specifically amyloid plaques, are a hallmark characteristic of Alzheimer's disease and can contribute to the degeneration of nerve cells and cognitive decline.

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  • 29. 

    Alzheimer’s patient’s brains have dead nerve cells that contain dandruff.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
  • 30. 

    In advance Alzheimer’s disease, individuals lose the ability to use their extremities and physical abilities.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    In advance Alzheimer's disease, individuals may experience cognitive decline, memory loss, and difficulty with language and communication. However, the loss of ability to use extremities and physical abilities is not typically associated with Alzheimer's disease. This symptom is more commonly seen in conditions such as Parkinson's disease or other neurological disorders. Therefore, the statement that individuals with advance Alzheimer's disease lose the ability to use their extremities and physical abilities is false.

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  • 31. 

    Alzheimer’s disease hits the majority of people while they are in their teens.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Alzheimer's disease typically affects older adults, usually those over the age of 65. It is a progressive brain disorder that causes memory loss, cognitive decline, and behavioral changes. While there are rare cases of early-onset Alzheimer's that can affect individuals in their 30s, 40s, or 50s, the majority of people are not affected by the disease during their teenage years. Therefore, the statement that Alzheimer's disease hits the majority of people while they are in their teens is false.

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  • 32. 

    The brain stem is sometimes called the “reptilian brain”.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The brain stem is sometimes referred to as the "reptilian brain" because it is the oldest and most primitive part of the brain. It controls basic functions necessary for survival, such as breathing, heart rate, and digestion. This term is derived from the fact that reptiles have a similar brain structure, emphasizing the evolutionary origins of this part of the brain.

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  • 33. 

    The Limbic System generates perceptions of rage and fear.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The limbic system is a complex network of brain structures that plays a crucial role in regulating emotions, including rage and fear. It is responsible for processing and generating emotional responses, as well as controlling the fight-or-flight response. Therefore, it is accurate to say that the limbic system generates perceptions of rage and fear.

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  • 34. 

    Damage to the Occipital Lobe can not cause blindness when the rest of the visual system is normal.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Damage to the Occipital Lobe can cause blindness even when the rest of the visual system is normal. The Occipital Lobe is responsible for processing visual information, so damage to this area can disrupt the ability to see. Therefore, the statement is false.

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  • 35. 

    The Hippocampus is essential to forming memories.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The hippocampus is a region in the brain that plays a crucial role in the formation of memories. It is responsible for encoding and storing new information into long-term memory. Damage to the hippocampus can result in severe memory impairments, such as the inability to form new memories (anterograde amnesia). Numerous studies have shown the importance of the hippocampus in memory processes, making the statement "The Hippocampus is essential to forming memories" true.

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  • 36. 

    The Limbic system is the center of human motor skills.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The limbic system is not responsible for human motor skills. It is a complex network of structures in the brain that is primarily associated with emotions, motivation, and memory. Motor skills, on the other hand, are controlled by the motor cortex, which is located in the frontal lobe of the brain. Therefore, the statement that the limbic system is the center of human motor skills is false.

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  • 37. 

    Teens are more likely than older people to engage in risky behavior because the part of the brain responsible for common sense and reasoning is not fully developed.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The explanation for the given answer "True" is that research has shown that the prefrontal cortex, the part of the brain responsible for common sense and reasoning, continues to develop into early adulthood. This means that teenagers, whose brains are still developing, may be more prone to engaging in risky behavior due to their limited ability to fully evaluate the potential consequences of their actions. As people age and their brains mature, they tend to exhibit more cautious and thoughtful decision-making. Therefore, it is true that teens are more likely than older people to engage in risky behavior due to the incomplete development of the brain's common sense and reasoning center.

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  • 38. 

    Some drugs block the re-uptake channels in the end of the axon causing excess amounts of dopamine to remain in the brain.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Some drugs can block the re-uptake channels in the end of the axon, which means that dopamine, a neurotransmitter, cannot be reabsorbed by the axon and remains in the brain. This leads to an excess amount of dopamine in the brain.

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  • 39. 

    The fatty substance that surrounds and protects some nerve fibers.

    Correct Answer
    myelin sheath
    Explanation
    The myelin sheath is a fatty substance that acts as a protective covering for certain nerve fibers. It helps to insulate and speed up the transmission of nerve impulses. Without the myelin sheath, nerve fibers would not be able to efficiently transmit signals, leading to disruptions in the nervous system.

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  • 40. 

    The chemicals that can cross over to neighboring neurons and activate them.

    Correct Answer
    neurotransmitters
    Explanation
    Neurotransmitters are chemicals that can cross over to neighboring neurons and activate them. They are released from the presynaptic neuron into the synaptic cleft, where they bind to receptors on the postsynaptic neuron, transmitting signals between neurons. This communication is crucial for the proper functioning of the nervous system, allowing for the transmission of information and coordination of various bodily functions.

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  • 41. 

    The long extension of a neuron that carry nerve impulses away from the body of the cell.

    Correct Answer
    axon
    Explanation
    An axon is a long extension of a neuron that carries nerve impulses away from the body of the cell. It is responsible for transmitting electrical signals from the cell body to other neurons, muscles, or glands. The axon is covered by a protective layer called the myelin sheath, which helps to speed up the transmission of nerve impulses. Overall, the axon plays a crucial role in the communication and functioning of the nervous system.

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  • 42. 

    Found at the ends of axons and release neurotransmitters or chemicals that cross over to neighboring neurons.

    Correct Answer
    axon terminals
    Explanation
    Axon terminals are found at the ends of axons and are responsible for releasing neurotransmitters or chemicals. These neurotransmitters or chemicals then cross over to neighboring neurons, allowing for communication between them. Axon terminals play a crucial role in transmitting signals from one neuron to another, enabling the functioning of the nervous system.

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  • 43. 

    The branching structure of a neuron that receives messages (attached to the cell body)

    Correct Answer
    dendrites
    Explanation
    Dendrites are the branching structures of a neuron that receive messages from other neurons and transmit them towards the cell body. They are responsible for receiving and integrating incoming signals, allowing the neuron to process and respond to information. Dendrites play a crucial role in the communication between neurons, as they receive signals through specialized structures called synapses. These synapses allow for the transmission of electrical and chemical signals between neurons, enabling the flow of information throughout the nervous system. Therefore, dendrites are essential for the functioning of neurons and the overall processing of information in the brain.

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  • 44. 

    The organelle in the cell body of the neuron that contains the genetic material of the cell.

    Correct Answer
    nucleus
    Explanation
    The nucleus is the organelle in the cell body of the neuron that contains the genetic material of the cell. It is often referred to as the control center of the cell because it houses the DNA, which carries the instructions for the cell's functions and characteristics. The nucleus is surrounded by a nuclear membrane that separates it from the cytoplasm and other organelles. It also contains a dense region called the nucleolus, which is responsible for producing ribosomes. Overall, the nucleus plays a crucial role in the regulation of cellular activities and the transmission of genetic information.

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  • 45. 

    Chemicals that regulate body functions.

    Correct Answer
    hormones
    Explanation
    Hormones are chemicals produced by the endocrine system that regulate various body functions. They act as messengers, traveling through the bloodstream to target cells or organs and influencing their activity. Hormones play a crucial role in maintaining homeostasis, controlling growth and development, regulating metabolism, and managing reproductive processes. They are responsible for coordinating the body's response to stress, controlling mood and emotions, and influencing behavior. Overall, hormones are essential for the proper functioning of the body and ensuring its overall well-being.

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  • 46. 

    Bundles of axons coming from many neurons

    Correct Answer
    nerves
    Explanation
    The term "nerves" refers to bundles of axons that originate from numerous neurons. These axons transmit signals throughout the body, allowing for communication between the brain, spinal cord, and various organs and tissues. Nerves play a crucial role in the functioning of the nervous system, enabling the transmission of sensory information, motor commands, and coordination of bodily processes.

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  • 47. 

    Contains the nucleus (also called the soma)

    Correct Answer
    cell body
    Explanation
    The cell body, also known as the soma, contains the nucleus. The nucleus is a vital organelle that houses the cell's genetic material, including DNA. It controls the cell's activities and is responsible for the synthesis of proteins and other essential molecules. The cell body also contains other organelles, such as mitochondria and ribosomes, which are involved in various cellular functions. Therefore, the cell body is the correct answer as it encompasses the nucleus and is essential for the overall functioning of the cell.

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  • 48. 

    The junction between an axon of one neuron and the cell body or dendrite of a neighboring neuron

    Correct Answer
    synapse
    Explanation
    A synapse is the junction between an axon of one neuron and the cell body or dendrite of a neighboring neuron. It is the site where communication occurs between neurons. When an electrical impulse reaches the end of an axon, it triggers the release of neurotransmitters into the synapse. These neurotransmitters then bind to receptors on the neighboring neuron, transmitting the signal and allowing for the transfer of information between neurons. The synapse plays a crucial role in the functioning of the nervous system and is essential for processes such as learning, memory, and motor control.

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  • 49. 

    The sensations we experience when we think we’ll hit another car on the freeway are due to activation of which system?

    • A.

      Sympathetic nervous system

    • B.

      Parasympathetic nervous system

    • C.

      Somatic nervous system

    • D.

      Central nervous system

    Correct Answer
    A. Sympathetic nervous system
    Explanation
    The sensations we experience when we think we'll hit another car on the freeway are due to activation of the sympathetic nervous system. This system is responsible for the "fight or flight" response, which is triggered in situations of perceived danger or threat. When activated, the sympathetic nervous system increases heart rate, dilates blood vessels, and releases stress hormones, preparing the body for action. These physiological changes can cause sensations such as increased heart rate, sweating, and heightened alertness, which are commonly experienced in situations of potential car accidents.

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  • 50. 

    Which type of sensory information does not pass through the thalamus?

    • A.

      Visual

    • B.

      Tactile

    • C.

      Olfactory

    • D.

      Auditory

    Correct Answer
    C. Olfactory
    Explanation
    The olfactory sensory information does not pass through the thalamus. The olfactory system is unique in that it bypasses the thalamus and sends information directly to the olfactory cortex in the brain. This allows for a quick and direct processing of smells, without the need for thalamic relay.

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