MCQ Quiz About Nervous System
This quiz will only scratch the surface of the nervous system covered in chapters 8 and 9.
Questions and Answers
- 1.
White matter is primarily for ___________ while gray matter is primarily for ___________.
- A.
Control, response
- B.
Transmission, processing
- C.
Response, control
- D.
Processing, transmission
Correct Answer
B. Transmission, processingExplanation
White matter refers to the regions of the central nervous system that are composed of myelinated axons, which are responsible for transmitting signals between different areas of the brain and spinal cord. Therefore, white matter is primarily involved in transmission of information. On the other hand, gray matter consists of neuronal cell bodies, dendrites, and unmyelinated axons, and it is responsible for processing and integrating information within the brain. Thus, gray matter is primarily involved in the processing of information.Rate this question:
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- 2.
Spinal taps are usually taken from below L3 because there is no longer a solid cord there, but a part referred to as the
- A.
Medulla oblongata
- B.
Cervical plexus
- C.
Horse's mane
- D.
Cauda equina
Correct Answer
D. Cauda equinaExplanation
Spinal taps, also known as lumbar punctures, are typically performed below the L3 vertebrae because at this level, the spinal cord ends and is replaced by a bundle of nerves called the cauda equina. The cauda equina is a collection of nerve roots that continue to extend downwards within the spinal canal. By performing the spinal tap below L3, healthcare professionals can safely access the cerebrospinal fluid without the risk of damaging the spinal cord. Therefore, the correct answer is cauda equina.Rate this question:
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- 3.
The part of the brainstem that works with reflex actions is the
- A.
Midbrain
- B.
Pons
- C.
Medulla oblongata
Correct Answer
A. MidbrainExplanation
The midbrain is the correct answer because it is responsible for coordinating reflex actions in the body. It plays a crucial role in relaying sensory information to the appropriate parts of the brain and initiating reflex responses. The midbrain also helps regulate basic functions such as eye movement, auditory and visual processing, and motor control.Rate this question:
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- 4.
The relay station in the brain is the
- A.
Thalamus
- B.
Hypothalamus
- C.
Epithalamus
Correct Answer
A. ThalamusExplanation
The thalamus is a relay station in the brain that plays a crucial role in relaying sensory information to different parts of the brain. It receives sensory signals from various sensory organs and sends them to the appropriate areas of the cerebral cortex for further processing. Additionally, the thalamus also regulates consciousness, sleep, and alertness. Therefore, it acts as a central hub for sensory and motor signals, making it the correct answer in this case.Rate this question:
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- 5.
How did you recognize the transverse fissure during the brain dissection lab?
- A.
Separated the 2 hemispheres
- B.
Separated the temporal lobes from the frontal lobe
- C.
Separated the frontal lobe from the parietal lobe
- D.
Separated the cerebrum from the cerebellum
Correct Answer
D. Separated the cerebrum from the cerebellumExplanation
The transverse fissure is a deep groove that separates the cerebrum from the cerebellum. During the brain dissection lab, the process of separating the cerebrum from the cerebellum would involve identifying and locating the transverse fissure. This would be done by carefully examining the brain and identifying the deep groove that separates the two structures.Rate this question:
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- 6.
The cerebral lobe responsible for sensory perception is the _______ lobe.
- A.
Frontal
- B.
Parietal
- C.
Temporal
- D.
Occipital
Correct Answer
B. ParietalExplanation
The parietal lobe is responsible for sensory perception. It receives and processes information related to touch, temperature, pain, and spatial awareness. This lobe plays a crucial role in integrating sensory information from different parts of the body and creating a coherent perception of the external world. Additionally, the parietal lobe is involved in various cognitive functions such as attention, perception of objects in space, and spatial reasoning. Therefore, it is the correct answer for the given question.Rate this question:
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- 7.
The most voluntary part of the brain is the
- A.
Cerebrum
- B.
Cerebellum
- C.
Diencephalons
- D.
Brain stem
Correct Answer
A. CerebrumExplanation
The cerebrum is the largest part of the brain and is responsible for voluntary actions such as movement, speech, and conscious thought. It is involved in higher cognitive functions such as memory, attention, and problem-solving. The cerebrum is divided into two hemispheres and is composed of different lobes that control specific functions. It is highly developed in humans and plays a crucial role in our ability to interact with the environment and engage in complex behaviors. The cerebellum, diencephalon, and brain stem are also important parts of the brain, but they are primarily involved in involuntary actions and basic bodily functions.Rate this question:
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- 8.
Why must CSF move?
- A.
To keep oxygen supplied to the brain
- B.
To prevent stagnation
- C.
To prevent drugs from entering the brain
- D.
To move the brain so that it won't rest
Correct Answer
B. To prevent stagnationExplanation
CSF (cerebrospinal fluid) must move to prevent stagnation. Stagnation refers to the pooling or accumulation of CSF in one area, which can lead to various complications. The movement of CSF helps to circulate nutrients and remove waste products from the brain and spinal cord. It also helps to maintain a constant pressure within the central nervous system. If CSF were to stagnate, it could result in a buildup of harmful substances, increased pressure, and impaired functioning of the brain and spinal cord. Therefore, the movement of CSF is essential to prevent stagnation and ensure the proper functioning of the central nervous system.Rate this question:
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- 9.
The meningenal layer on the brain that you tried to remove in the lab was the
- A.
Dura mater
- B.
Arachnoid mater
- C.
Pia mater
Correct Answer
C. Pia materExplanation
The pia mater is the innermost layer of the meninges, the protective covering of the brain. It is a thin and delicate membrane that adheres closely to the surface of the brain, providing support and nourishment to the underlying neural tissue. In the lab, when attempting to remove the meningeal layer, the pia mater would be the layer that is closest to the brain and therefore the one that would be encountered first.Rate this question:
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- 10.
The peripheral nervous system can be subdivided into
- A.
The somatic and autonomic divisions
- B.
The sensory and motor divisions
- C.
The sympathetic and parasympathetic divisions
- D.
The CNS and PNS
Correct Answer
B. The sensory and motor divisionsExplanation
The correct answer is the sensory and motor divisions. The peripheral nervous system is responsible for transmitting information between the central nervous system (CNS) and the rest of the body. It can be divided into two main divisions: the sensory division, which carries sensory information from the body to the CNS, and the motor division, which carries motor commands from the CNS to the muscles and glands. This division allows for the coordination of sensory input and motor output, enabling the body to respond to stimuli and carry out voluntary and involuntary movements.Rate this question:
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- 11.
________ neurons carry information away from the brain.
- A.
Sensory
- B.
Motor
- C.
Interneurons
Correct Answer
B. MotorExplanation
Motor neurons carry information away from the brain. These neurons are responsible for transmitting signals from the central nervous system to the muscles and glands in the body, allowing for voluntary movements and involuntary actions. Motor neurons play a crucial role in coordinating and controlling bodily movements and are essential for the proper functioning of the nervous system.Rate this question:
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- 12.
Schwann cells are to the PNS, what ______________ are to the CNS.
- A.
Astrocytes
- B.
Nodes of Ranvier
- C.
Ependymal cells
- D.
Oligodendrocytes
Correct Answer
D. OligodendrocytesExplanation
Oligodendrocytes are to the CNS what Schwann cells are to the PNS. Oligodendrocytes are a type of glial cell that provide support and insulation to neurons in the central nervous system. They form myelin sheaths around axons, which helps in the transmission of electrical signals. Similarly, Schwann cells perform a similar function in the peripheral nervous system by wrapping around axons and forming myelin sheaths. Therefore, oligodendrocytes are the correct answer as they have a similar role in the CNS as Schwann cells have in the PNS.Rate this question:
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- 13.
Phagocytes that dispose of debris are
- A.
Microglia
- B.
Satellite cells
- C.
Schwann cells
- D.
Astrocytes
Correct Answer
A. MicrogliaExplanation
Microglia are a type of phagocyte cells found in the central nervous system. They play a crucial role in the immune defense of the brain by engulfing and disposing of cellular debris, dead cells, and foreign substances. Microglia are constantly surveying the brain for any signs of damage or infection, and upon detection, they activate and migrate to the affected area to eliminate the debris. This process helps to maintain the overall health and functioning of the brain. Therefore, microglia are the correct answer as they are specifically responsible for disposing of debris in the central nervous system.Rate this question:
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- 14.
The neuron part that actually is not a part is the
- A.
Axon
- B.
Cell body
- C.
Dendrite
- D.
Synapse
Correct Answer
D. SynapseExplanation
The synapse is not a part of the neuron itself, but rather the junction between two neurons. It is the space where signals are transmitted from one neuron to another. The axon, cell body, and dendrites are all actual parts of the neuron. The axon is responsible for transmitting signals away from the cell body, the cell body contains the nucleus and other organelles, and the dendrites receive signals from other neurons.Rate this question:
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- 15.
The _______ nerve controls the expression of the face and anterior taste buds.
- A.
Trigeminal
- B.
Vagus
- C.
Facial
- D.
Hypoglossal
Correct Answer
C. FacialExplanation
The facial nerve controls the expression of the face and anterior taste buds. This nerve is responsible for the movement of the muscles of facial expression, such as smiling or frowning, as well as for the sense of taste in the front two-thirds of the tongue. The trigeminal nerve is responsible for sensory information from the face and controls chewing muscles, the vagus nerve controls various organs in the body, and the hypoglossal nerve controls the muscles of the tongue. Therefore, the facial nerve is the correct answer in this case.Rate this question:
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- 16.
The brachial plexus is the nerves at
- A.
C1-C4
- B.
C5-C8, T1
- C.
T12-L4
- D.
L4-S2
Correct Answer
B. C5-C8, T1Explanation
The brachial plexus is a network of nerves that originates from the spinal cord in the neck (C5-C8) and extends into the upper limb. These nerves provide motor and sensory innervation to the muscles and skin of the shoulder, arm, forearm, and hand. Additionally, the brachial plexus gives rise to specific nerves, such as the median, ulnar, and radial nerves, which play a crucial role in controlling movement and sensation in the upper limb. T1 refers to the first thoracic spinal nerve, which also contributes to the brachial plexus.Rate this question:
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- 17.
The common name for cerebrovascular accident is
- A.
Stroke
- B.
Heart attack
- C.
Multiple sclerosis
- D.
Hydrocephalus
Correct Answer
A. StrokeExplanation
A cerebrovascular accident, commonly known as a stroke, occurs when there is a disruption of blood flow to the brain, resulting in the death of brain cells. This can lead to various neurological deficits such as paralysis, speech difficulties, and cognitive impairments. The term "heart attack" refers to a condition where there is a blockage of blood flow to the heart, which is unrelated to a stroke. Multiple sclerosis is a chronic autoimmune disease that affects the central nervous system, causing damage to the protective covering of nerve fibers. Hydrocephalus is a condition characterized by an accumulation of cerebrospinal fluid in the brain. Therefore, the correct answer is stroke.Rate this question:
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- 18.
Loss of use on 1 side of the body is
- A.
Paraplegia
- B.
Quadraplegia
- C.
Hemiplegia
Correct Answer
C. HemiplegiaExplanation
Hemiplegia refers to the loss of use or paralysis on one side of the body. This condition is usually caused by damage or injury to the opposite side of the brain, which controls movement and sensation on the opposite side of the body. Unlike paraplegia, which affects the lower limbs, and quadriplegia, which affects all four limbs, hemiplegia specifically affects one side of the body.Rate this question:
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- 19.
Bell's palsy is from damage to the ____ cranial nerve.
- A.
2nd
- B.
7th
- C.
11th
- D.
16th
Correct Answer
B. 7thExplanation
Bell's palsy is a condition characterized by sudden weakness or paralysis of the muscles on one side of the face. It is caused by damage to the 7th cranial nerve, also known as the facial nerve. This nerve controls the movement of the muscles responsible for facial expressions, as well as the sense of taste on the front two-thirds of the tongue. Damage to the 7th cranial nerve can result in facial drooping, difficulty closing the eye on the affected side, and loss of taste sensation.Rate this question:
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Mar 20, 2023Quiz Edited by
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Mar 09, 2009Quiz Created by
Jeremy Merrick
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