Clinical Organ System Exam 4 (Final): Nervous System Quiz

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  • 1/39 Questions

    The primary function of the nervous system is to ___.

    • Maintain balance and receive sounds
    • Receive visual images by interpreting light
    • Cushion the brain and spinal cord
    • Receive and interpret stimuli in order to coordinate the body's response
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About This Quiz

The 'Clinical Organ System Exam 4 (FINAL): Nervous System Quiz' assesses knowledge on brain functions, nervous system structure, and sensory interpretation. It evaluates understanding of the frontal, parietal, temporal, and occipital lobes, and distinguishes between the central and peripheral nervous systems.

Clinical Organ System Exam 4 (Final): Nervous System Quiz - Quiz

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  • 2. 

    The brain stem includes which of the following structures?

    • Midbrain, pons, and medulla oblongata

    • Cerebrum and cerebellum

    • Corpus callosum septum, and fornix

    • Thalamus and hypothalamus

    Correct Answer
    A. Midbrain, pons, and medulla oblongata
    Explanation
    The brain stem is a crucial part of the brain that connects the spinal cord to the rest of the brain. It is responsible for controlling many essential functions such as breathing, heart rate, and blood pressure. The midbrain, pons, and medulla oblongata are all structures that are included in the brain stem. The midbrain is involved in sensory processing and motor control, the pons helps regulate breathing and sleep, and the medulla oblongata controls involuntary functions such as heartbeat and digestion. Therefore, the correct answer is midbrain, pons, and medulla oblongata.

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  • 3. 

    Which of the following parts of the brain is the primary area for interpretation of visual stimuli?

    • Temporal Lobe

    • Frontal Lobe

    • Occipital Lobe

    • Parietal Lobe

    Correct Answer
    A. Occipital Lobe
    Explanation
    The occipital lobe is the primary area for interpretation of visual stimuli. It is located at the back of the brain and is responsible for processing and interpreting visual information received from the eyes. This lobe contains the primary visual cortex, which plays a crucial role in analyzing and making sense of visual input. Damage to the occipital lobe can result in visual impairments, such as difficulty recognizing objects or perceiving colors.

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  • 4. 

    The peripheral nervous system is arranged into which of the following?

    • 12 cranial nerves only

    • 31 cranial nerves only

    • 12 spinal nerves only

    • 31 spinal nerves only

    • 31 cranial nerves and 12 spinal nerves

    • 12 cranial nerves and 31 spinal nerves

    Correct Answer
    A. 12 cranial nerves and 31 spinal nerves
    Explanation
    The peripheral nervous system is divided into two main parts: the cranial nerves and the spinal nerves. There are 12 pairs of cranial nerves that originate from the brain and control functions of the head and neck. On the other hand, there are 31 pairs of spinal nerves that originate from the spinal cord and control functions of the rest of the body. Therefore, the correct answer is 12 cranial nerves and 31 spinal nerves.

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  • 5. 

    The central nervous system (CNS) includes the ___.

    • Sensory organs only

    • Brain only

    • Spinal cord only

    • Brain and spinal cord only

    • Brain, spinal cord, and sensory organs

    Correct Answer
    A. Brain and spinal cord only
    Explanation
    The central nervous system (CNS) consists of the brain and spinal cord only. The sensory organs, such as the eyes, ears, and skin, are part of the peripheral nervous system (PNS), which connects the CNS to the rest of the body. The brain and spinal cord are responsible for processing and coordinating information received from the sensory organs and sending out signals to control body functions.

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  • 6. 

    The autonomic nervous system is ___.

    • Responsible for controlling voluntary actions

    • Responsible for controlling involuntary actions

    • Part of the CNS

    • Unnecessary

    Correct Answer
    A. Responsible for controlling involuntary actions
    Explanation
    The autonomic nervous system is responsible for controlling involuntary actions. This includes activities that occur automatically without conscious control, such as heart rate, digestion, and breathing. Unlike voluntary actions, which are under our conscious control, involuntary actions are regulated by the autonomic nervous system to maintain homeostasis and ensure the proper functioning of our internal organs and bodily systems.

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  • 7. 

    Which part of the eye translates light waves into nerve impulses?

    • Retina

    • Cornea

    • Sclera

    • Lens

    • Vitreous humour

    Correct Answer
    A. Retina
    Explanation
    The retina is the correct answer because it is the part of the eye that contains specialized cells called photoreceptors, which are responsible for converting light waves into electrical signals or nerve impulses. These impulses are then transmitted to the brain through the optic nerve, allowing us to perceive and interpret visual information. The cornea, sclera, lens, and vitreous humor all play important roles in the overall function of the eye, but they do not directly translate light waves into nerve impulses like the retina does.

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  • 8. 

    A nerve impulse is a(n) ___.

    • Electrical signal, characterized by an action potential only

    • Chemical signal, characterized by the release of neurotransmitters only

    • Electrochemical signal, characterized by both an action potential and the release of neurotransmitters

    • Reflexive signal, characterized by a resting potential

    Correct Answer
    A. Electrochemical signal, characterized by both an action potential and the release of neurotransmitters
    Explanation
    A nerve impulse is an electrochemical signal because it involves both electrical and chemical processes. It is characterized by an action potential, which is the electrical component of the signal, and the release of neurotransmitters, which is the chemical component. This combination of electrical and chemical activity allows for the transmission of information between neurons in the nervous system.

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  • 9. 

    The majority of the brain is referred to as the ___.

    • Cerebellum

    • Diencephalon

    • Cerebrum

    • Brain stem

    Correct Answer
    A. Cerebrum
    Explanation
    The cerebrum is the largest part of the brain and is responsible for higher cognitive functions such as thinking, reasoning, memory, and voluntary movement. It is divided into two hemispheres and is composed of different lobes that control various functions. The cerebrum also plays a role in sensory perception and language processing.

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  • 10. 

    In addition to hearing, the ear is responsible for ___.

    • Maintaining balance

    • Maintaining homeostasis

    • Maintaining motor control

    • Interpreting auditory signals

    Correct Answer
    A. Maintaining balance
    Explanation
    The ear is responsible for maintaining balance in addition to hearing. This is achieved through the vestibular system, which is located in the inner ear. The vestibular system consists of fluid-filled canals and sensory receptors that detect changes in head position and movement. This information is then sent to the brain, allowing us to maintain our balance and coordination.

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  • 11. 

    Which of the following is true of the middle ear?

    • It consists of the malleus (hammer), incus (anvil), and stapes (stirrup).

    • It is commonly referred to as the ear drum.

    • It consists of the pinna, acoustic meatus, and tympanic membrane.

    • It consists of the cochlea, vestibule, and semicircular canals.

    Correct Answer
    A. It consists of the malleus (hammer), incus (anvil), and stapes (stirrup).
    Explanation
    The correct answer is that the middle ear consists of the malleus (hammer), incus (anvil), and stapes (stirrup). This is true because these three small bones are located in the middle ear and are responsible for transmitting sound vibrations from the outer ear to the inner ear. They work together to amplify and transmit sound waves, allowing us to hear.

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  • 12. 

    Which of the following parts of the brain receives sensory inputs of temperature, pressure, touch, and muscle control, and is responsible for interpretation of language? 

    • Temporal Lobe

    • Frontal Lobe

    • Occipital Lobe

    • Parietal Lobe

    Correct Answer
    A. Parietal Lobe
    Explanation
    The parietal lobe is responsible for receiving sensory inputs of temperature, pressure, touch, and muscle control. It also plays a role in the interpretation of language.

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  • 13. 

    Which of the following parts of the brain is the center for hearing, smell, and language input?

    • Temporal Lobe

    • Frontal Lobe

    • Occipital Lobe

    • Parietal Lobe

    Correct Answer
    A. Temporal Lobe
    Explanation
    The temporal lobe is responsible for processing auditory information, including hearing. It is also involved in the processing of olfactory information, which is related to smell. Additionally, the temporal lobe plays a crucial role in language processing, including both comprehension and production. Therefore, the temporal lobe can be considered the center for hearing, smell, and language input.

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  • 14. 

    Which of the following cranial nerves carries sensory input from the ear?

    • Vestibulocochlear

    • Vagus

    • Hypoglossal

    • Trigeminal

    Correct Answer
    A. Vestibulocochlear
    Explanation
    The vestibulocochlear nerve carries sensory input from the ear. This nerve is responsible for transmitting information related to hearing and balance from the inner ear to the brain. It consists of two branches, the vestibular branch, which carries information about balance, and the cochlear branch, which carries information about hearing. The vagus nerve is responsible for controlling numerous functions in the body, such as heart rate and digestion. The hypoglossal nerve controls the movement of the tongue, while the trigeminal nerve carries sensory information from the face.

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  • 15. 

    Which of the following parts of the brain is the outermost layer of nervous tissue?

    • Cerebral cortex

    • Brain stem

    • Cerebellum

    • Corpus callosum

    • Ventricles

    Correct Answer
    A. Cerebral cortex
    Explanation
    The cerebral cortex is the outermost layer of nervous tissue in the brain. It is responsible for higher cognitive functions such as perception, memory, language, and decision-making. It plays a crucial role in processing sensory information and controlling voluntary movements. The cerebral cortex is highly convoluted, with folds and grooves called gyri and sulci, which increase its surface area and allow for more complex processing. It is divided into two hemispheres, each further divided into four lobes: frontal, parietal, temporal, and occipital.

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  • 16. 

    Which of the following is NOT a disorder of the eye?

    • Conjunctivitis

    • Tinnitis

    • Glaucoma

    • Macular degeneration

    Correct Answer
    A. Tinnitis
    Explanation
    Tinnitus is not a disorder of the eye. It is a condition that causes ringing or buzzing in the ears. While it can be associated with hearing loss or ear problems, it is not directly related to the eye. Conjunctivitis is an inflammation of the conjunctiva, glaucoma is a group of eye conditions that damage the optic nerve, and macular degeneration is a progressive disease that affects the central part of the retina.

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  • 17. 

    Which part of the eye sharpens the focus of the light?

    • Retina

    • Cornea

    • Sclera

    • Lens

    • Vitreous humour

    Correct Answer
    A. Lens
    Explanation
    The lens is responsible for sharpening the focus of light in the eye. It is a transparent structure located behind the iris and the pupil. The lens changes its shape to adjust the focal length, allowing the eye to focus on objects at different distances. When the ciliary muscles contract or relax, the lens becomes thicker or thinner, respectively, altering its curvature and enabling the eye to focus light precisely onto the retina, where the image is formed.

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  • 18. 

    Which of the following is true of the tympanic membrane?

    • It transmits the auditory nerve impulse to the brain.

    • It is commonly referred to as the ear drum.

    • It is part of the inner ear.

    • It is part of the middle ear.

    Correct Answer
    A. It is commonly referred to as the ear drum.
    Explanation
    The correct answer is "It is commonly referred to as the ear drum." The tympanic membrane, also known as the ear drum, is a thin, cone-shaped membrane that separates the outer ear from the middle ear. It vibrates in response to sound waves and transmits these vibrations to the middle ear, where they are then transmitted to the inner ear and eventually to the brain for interpretation.

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  • 19. 

    Which of the following is divided into the sympathetic and parasympathetic nervous systems?

    • Peripheral nervous system (PNS)

    • Central nervous system (CNS)

    • Autonomic nervous system

    • Somatic nervous system

    • None of the answer choices are correct

    Correct Answer
    A. Autonomic nervous system
    Explanation
    The autonomic nervous system is divided into the sympathetic and parasympathetic nervous systems. The sympathetic nervous system prepares the body for fight or flight responses, while the parasympathetic nervous system helps the body rest and digest. This division allows for the regulation of various bodily functions and responses to different situations. The peripheral nervous system (PNS) refers to all the nerves outside of the brain and spinal cord, while the central nervous system (CNS) includes the brain and spinal cord. The somatic nervous system controls voluntary movements of skeletal muscles.

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  • 20. 

    Which of the following parts of the brain controls personality and speech?

    • Temporal Lobe

    • Frontal Lobe

    • Occipital Lobe

    • Parietal Lobe

    Correct Answer
    A. Frontal Lobe
    Explanation
    The frontal lobe is responsible for controlling personality and speech. It is located at the front of the brain and is involved in various cognitive functions such as problem-solving, decision-making, and social behavior. Damage to the frontal lobe can result in changes in personality, speech difficulties, and impaired judgment.

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  • 21. 

    The thalamus and hypothalamus can be found in which region of the brain?

    • Diencephalon

    • Cerebrum

    • Cerebellum

    • Brain stem

    Correct Answer
    A. Diencephalon
    Explanation
    The thalamus and hypothalamus are both located in the diencephalon region of the brain. The diencephalon is a division of the brain that is situated between the cerebrum and the brain stem. It is responsible for relaying sensory information, regulating sleep and wake cycles, controlling body temperature, and managing hormonal functions. Therefore, the correct answer is diencephalon.

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  • 22. 

    Otitis media, tinnitus, and Meniere's disease are all disorders that affect the ___.

    • Ear

    • Eye

    • Brain

    • Spinal cord

    • CNS

    • PNS

    Correct Answer
    A. Ear
    Explanation
    Otitis media, tinnitus, and Meniere's disease are all disorders that affect the ear. Otitis media refers to an infection or inflammation of the middle ear, tinnitus is a condition characterized by ringing or buzzing in the ears, and Meniere's disease is a disorder that affects the inner ear and causes symptoms like vertigo, hearing loss, and tinnitus. Therefore, all of these conditions directly impact the ear.

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  • 23. 

    Which of the following is the correct pathway of a nerve impulse?

    • Dendrite -> cell body -> axon -> axon terminal -> release of neurotransmitters -> synapse -> dendrite of receiving cell

    • Axon -> axon terminal -> cell body -> dendrite -> release of neurotransmitters -> synapse -> axon of receiving cell

    • Cell body -> dendrite -> axon -> axon terminal -> release of neurotransmitters -> synapse -> cell body of receiving cell

    • Cell body -> axon terminal -> axon -> dendrite -> release of neurotransmitters -> synapse -> cell body of receiving cell

    Correct Answer
    A. Dendrite -> cell body -> axon -> axon terminal -> release of neurotransmitters -> synapse -> dendrite of receiving cell
    Explanation
    The correct pathway of a nerve impulse starts with the dendrite, which receives the signal. The signal then travels to the cell body, where it is processed. From there, it moves down the axon, a long fiber that carries the signal. At the axon terminal, neurotransmitters are released, which transmit the signal to the next neuron at the synapse. Finally, the signal is received by the dendrite of the receiving cell, completing the pathway.

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  • 24. 

    The peripheral nervous system does NOT include the ___.

    • Autonomic nervous system

    • Somatic nervous system

    • Sensory organs

    • Peripheral nerves

    • Brain and spinal cord

    Correct Answer
    A. Brain and spinal cord
    Explanation
    The peripheral nervous system consists of the autonomic nervous system, somatic nervous system, sensory organs, and peripheral nerves. However, it does not include the brain and spinal cord, which are part of the central nervous system.

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  • 25. 

    Which of the following is a disorder of the nervous system that is characterized by inflammation of the myelin sheath of neurons within the brain and spinal cord resulting in decreased nerve function?

    • Epilepsy

    • Multiple sclerosis

    • Parkinson's disease

    • Meniere's disease

    Correct Answer
    A. Multiple sclerosis
    Explanation
    Multiple sclerosis is a disorder of the nervous system characterized by inflammation of the myelin sheath of neurons within the brain and spinal cord. This inflammation leads to the formation of scar tissue, which disrupts the normal flow of electrical impulses along the nerves. As a result, nerve function is decreased, leading to a variety of symptoms such as fatigue, muscle weakness, difficulty walking, and problems with coordination and balance. Epilepsy is a neurological disorder characterized by recurrent seizures, Parkinson's disease is a degenerative disorder of the nervous system that affects movement, and Meniere's disease is a disorder of the inner ear causing vertigo, hearing loss, and tinnitus.

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  • 26. 

    Which of the following is a disorder of the nervous system that is characterized by a deficiency in a neurotransmitter called dopamine and a progressive degeneration of nerve cells that control movement?

    • Epilepsy

    • Multiple sclerosis

    • Parkinson's disease

    • Meniere's disease

    Correct Answer
    A. Parkinson's disease
    Explanation
    Parkinson's disease is a disorder of the nervous system characterized by a deficiency in the neurotransmitter dopamine and a progressive degeneration of nerve cells that control movement. This leads to symptoms such as tremors, stiffness, and difficulty with balance and coordination. The condition is caused by the loss of dopamine-producing cells in a specific region of the brain called the substantia nigra. Treatment options for Parkinson's disease include medication to increase dopamine levels, physical therapy, and in some cases, surgery.

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  • 27. 

    Sensory neurons carry impulses from ___.

    • The sense organs to the spinal cord and brain

    • The brain and spinal cord to the muscles and glands

    • The brain only

    • The spinal cord only

    • Sense organs, brain, and spinal cord

    Correct Answer
    A. The sense organs to the spinal cord and brain
    Explanation
    Sensory neurons are responsible for carrying impulses from the sense organs to the spinal cord and brain. This allows for the transmission of sensory information such as touch, taste, smell, sight, and hearing from the external environment to the central nervous system. The brain and spinal cord then process and interpret these sensory signals, allowing us to perceive and respond to our surroundings.

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  • 28. 

    These are also referred to as effectors because they carry signals away from the brain and spinal cord to the muscles and glands.

    • Sensory receptors

    • Motor neurons

    • Sensory neurons

    • Interneurons

    • Glia

    Correct Answer
    A. Motor neurons
    Explanation
    Motor neurons are the correct answer because they are responsible for carrying signals away from the brain and spinal cord to the muscles and glands. They are also known as effectors because they transmit commands from the central nervous system to the peripheral nervous system, allowing for movement and coordination in the body.

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  • 29. 

    The junction between two neurons, a neuron and a muscle fiber, or a neuron and a gland is called a(n) ___.

    • Axon terminal

    • Dendrite

    • Neurotransmitter

    • Sensory receptor

    • Synapse

    Correct Answer
    A. Synapse
    Explanation
    A synapse is the junction between two neurons, a neuron and a muscle fiber, or a neuron and a gland. It is the point where these cells come into close proximity and communicate with each other. At the synapse, electrical signals from one cell are converted into chemical signals (neurotransmitters) that are released into the synaptic cleft and received by the other cell, allowing for the transmission of information between cells. The synapse plays a crucial role in the functioning of the nervous system, allowing for the integration and coordination of signals throughout the body.

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  • 30. 

    Which of the following cranial nerves is the longest and receives sensory input and coordinates the actions of vital organs?

    • Vagus

    • Spinal accessory

    • Trigeminal

    • Trochlear

    Correct Answer
    A. Vagus
    Explanation
    The vagus nerve is the longest cranial nerve and is responsible for receiving sensory input and coordinating the actions of vital organs. It innervates many organs in the body, including the heart, lungs, and gastrointestinal tract. It plays a crucial role in regulating functions such as heart rate, digestion, and breathing.

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  • 31. 

    The chemical that is released into the gap between neurons is called a(n) ___.

    • Axon terminal

    • Dendrite

    • Neurotransmitter

    • Sensory receptor

    • Synapse

    Correct Answer
    A. Neurotransmitter
    Explanation
    A neurotransmitter is a chemical that is released into the gap between neurons, known as the synapse. It plays a crucial role in transmitting signals between neurons, allowing for communication within the nervous system. Neurotransmitters are released from the axon terminals of one neuron and bind to receptors on the dendrites of another neuron, facilitating the transmission of electrical impulses. This process is essential for various functions such as cognition, movement, and emotion regulation.

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  • 32. 

    Which of the following cranial nerves does NOT contribute to movement of the eye?

    • Trochlear

    • Occulomotor

    • Abducens

    • Trigeminal

    Correct Answer
    A. Trigeminal
    Explanation
    The trigeminal nerve does not contribute to the movement of the eye. It is primarily responsible for sensory functions in the face, such as providing sensation to the skin, muscles of mastication (chewing), and the cornea. The trochlear, oculomotor, and abducens nerves are all involved in controlling the movement of the eye. The trochlear nerve controls the superior oblique muscle, the oculomotor nerve controls most of the eye muscles, and the abducens nerve controls the lateral rectus muscle.

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  • 33. 

    Which of the following is NOT a major function of the thalamus?

    • Production of hormones

    • Receiving sensory signals

    • Affecting memory

    • Affecting emotion and motivation

    • ALL of the answer choices are functions of the thalamus

    Correct Answer
    A. Production of hormones
    Explanation
    The thalamus is a part of the brain that acts as a relay station for sensory signals, receiving information from various sensory organs and transmitting it to the appropriate areas of the cerebral cortex. It also plays a role in memory, emotion, and motivation by relaying information to the limbic system. However, the thalamus is not responsible for the production of hormones. That function is primarily carried out by the endocrine system, which includes glands such as the pituitary gland, thyroid gland, and adrenal glands.

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  • 34. 

    Which of the following is true of the inner ear?

    • It consists of the malleus (hammer), incus (anvil), and stapes (stirrup).

    • It is commonly referred to as the ear drum.

    • It consists of the pinna, acoustic meatus, and tympanic membrane.

    • It consists of the cochlea, vestibule, and semicircular canals.

    Correct Answer
    A. It consists of the cochlea, vestibule, and semicircular canals.
    Explanation
    The inner ear consists of the cochlea, vestibule, and semicircular canals. The cochlea is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain. The vestibule helps with balance and orientation by detecting changes in head position and movement. The semicircular canals also play a role in balance by detecting rotational movements of the head. The malleus, incus, and stapes are actually part of the middle ear, not the inner ear.

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  • 35. 

    Which of the following parts of the brain controls vital functions such as heart beat and respiration?

    • Cerebral cortex

    • Brain stem

    • Cerebellum

    • Corpus callosum

    • Ventricles

    Correct Answer
    A. Brain stem
    Explanation
    The brain stem is responsible for controlling vital functions such as heart beat and respiration. It is located at the base of the brain and connects the brain to the spinal cord. The brain stem contains various structures, including the medulla oblongata, pons, and midbrain, which regulate essential bodily processes such as breathing, heart rate, blood pressure, and consciousness. Damage to the brain stem can have severe consequences for these vital functions.

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  • 36. 

    Which of the following parts of the brain passes information between the left and right hemispheres?

    • Cerebral cortex

    • Brain stem

    • Cerebellum

    • Corpus callosum

    • Ventricles

    Correct Answer
    A. Corpus callosum
    Explanation
    The corpus callosum is a large bundle of nerve fibers that connects the left and right hemispheres of the brain. It allows for communication and the transfer of information between the two hemispheres, enabling them to work together and coordinate functions.

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  • 37. 

    Which part of the eye is the transparent portion that bends light rays and helps focus them?

    • Retina

    • Cornea

    • Sclera

    • Lens

    • Vitreous humour

    Correct Answer
    A. Cornea
    Explanation
    The cornea is the transparent portion of the eye that bends light rays and helps focus them. It is located at the front of the eye and acts as a protective covering. The cornea plays a crucial role in the eye's ability to focus light onto the retina, which is responsible for converting light into neural signals that can be interpreted by the brain.

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  • 38. 

    Which of the following parts of the brain is primarily responsible for balance and muscular coordination?

    • Cerebral cortex

    • Brain stem

    • Cerebellum

    • Corpus callosum

    • Ventricles

    Correct Answer
    A. Cerebellum
    Explanation
    The cerebellum is primarily responsible for balance and muscular coordination. It receives information from the sensory systems, the spinal cord, and other parts of the brain, and uses this information to coordinate voluntary movements, maintain posture, and regulate balance. It helps in fine-tuning movements, ensuring smooth and coordinated muscle contractions. The cerebral cortex is responsible for higher cognitive functions, the brain stem for basic functions like breathing and heart rate, the corpus callosum for communication between the brain hemispheres, and the ventricles for cerebrospinal fluid circulation.

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  • 39. 

    Which of the following parts of the brain contain cerebrospinal fluid, which provides cushioning and nutrients for the brain?

    • Cerebral cortex

    • Brain stem

    • Cerebellum

    • Corpus callosum

    • Ventricles

    Correct Answer
    A. Ventricles
    Explanation
    The ventricles of the brain contain cerebrospinal fluid, which serves as a cushion and provides nutrients for the brain. The ventricles are a system of interconnected cavities within the brain, filled with cerebrospinal fluid. This fluid helps to protect the brain from injury by acting as a shock absorber, and it also helps to remove waste products from the brain. Additionally, the cerebrospinal fluid provides nutrients and oxygen to the brain cells, ensuring their proper functioning. Therefore, the ventricles are responsible for housing and circulating the cerebrospinal fluid, which is essential for the overall health and functioning of the brain.

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  • Current Version
  • Apr 16, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • May 21, 2014
    Quiz Created by
    Awest

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