Nervous System MCQs

Nervous System MCQs

Try to answer these 40 Nervous System MCQs and check your understanding of the Nervous System subject. Scroll down and let's begin!

1: The ________ method can be used to identify the neural inputs to a brain region.

A.   Retrograde labeling

B.   Electrolytic lesion

C.   Anterograde labeling

2: The excitable cells of the nervous system are called ____________ .

A.   Neurons

B.   Neuroglia

C.   Neurosma

D.   None of the above

3: The efferent division of the peripheral nervous system innervates ________ cells.

A.   Skeletal muscle cells.

B.   Glandular cells.

C.   Smooth muscle cells.

D.   Heart muscle cells.

E.   All of the above

4: The _______ branch of the nervous system is under involuntary, unconscious control.

A.   Autonomic Nervous System

B.   Somatic nervous system

C.   None

5: There are _____ pairs of cranial nerves and _____ pairs of spinal nerves.

A.   12;31

B.   13;31

C.   13;32

D.   12;32

6: Cells that gather information and control body functions are ________.

A.   Nerve cell

B.   Proton

C.   Electron

D.   Neurons

7: For example, a single touch sensory ____________ can cover a large area of skin.. .

A.   Electron.

B.   Proton .

C.   Neutron .

D.   Neuron

8: __________neurons are rare neurons, but are located in the retina and in the olfactory mucosa.

A.   Epineurium

B.   Bipolar

C.   Perineurium

D.   None of these

9: In the surgery of skull base, the ____ procedure is what is done to the lesion.

A.   Radical

B.   Definitive

C.   Approach

D.   Intubation

10: Match the term to its correct description: gaba __________.

A.   Is a "mood" transmitter, the target of Prozac to relieve depression

B.   Generally inhibitory; found throughout CNS

C.   Excites skeletal muscle

D.   Is a neurotransmitter of postganglionic neurons in the sympathetic nervous system

11: In neurons, efferent is to ______ as afferent is to ______.

A.   Androgens; estrogens

B.   Controls heartbeat

C.   Motor; sensory

D.   None of these

12: Function in the endocrine system much like ____ in the nervous system.

A.   Hormones;Neurotransmitters

B.   Hormones; Dendrites

C.   Neurotransmitters; Hormones

D.   Endorphins; Sensory neurons

13: All somatic motor neurons produce __________.

A.   Both epinephrine and norepinephrine

B.   Only norepinephrine

C.   Only acetylcholine

D.   Both acetylcholine and norepinephrine

14: ________ neurons form the afferent division of the pns.

A.   Sensory neurons

B.   Parasympathetic

C.   Sympathetic

D.   Motor neurons

15: ________ open or close in response to binding specific molecules.

A.   Activated channels

B.   Leak channels

C.   Voltage-gated and chemically gated channels

D.   Chemically gated channels

E.   Voltage-gated channels

16: A neuron sends a signal toward another neuron along its _____.

A.   Axon

B.   Dendrite

C.   Exon

17: When a ligand ____________, an ipsp will be produced.

A.   Opens a potassium channel

B.   The opening of calcium-release channels

C.   The opening of ligand-gated cation channels

D.   The opening of ligand-gated anion channels

18: The concentrations of ions are very different inside and outside a nerve cell due to _____.

A.   Osmosis

B.   Diffusion

C.   Sodium-potassium pumps

D.   Symports and antiports

19: The heart muscle is a ________ effector.

A.   Visceral

B.   Pressure

C.   Ventral roots

D.   Somatic

20: The peripheral nervous system consists of _____ and motor neurons.

A.   Cranial

B.   Nerves

C.   Spinal

D.   All of these

21: Each peripheral nerve provides ________ innervation to peripheral structures.

A.   Motor

B.   Sensory

C.   Motor and sensory

D.   Motor or sensory

22: If the membrane potential of a neuron decreases, the membrane potential _____.

A.   Becomes less negative.

B.   Becomes more negative.

C.   Remains unchanged.

D.   None of the above.

23: In a neuron, during the depolarization phase that may trigger an action potential _____.

A.   They are pumped by proteins that require ATP hydrolysis and when the electrical charge gradient repulses or attracts them

B.   Becomes less negative.

C.   Some voltage-gated sodium channels are open

D.   None of these

24: Autonomic nervous system fibers are involved in all of the following except __________.

A.   Changing the diameter of the pupil

B.   Adjusting heart rate and force

C.   Altering salivary mucus secretion

D.   Regulating gastrointestinal motility

E.   Maintaining the tonicity of the muscles of the neck.

25: Somatic is to autonomic as ______ is to ______.

A.   Voluntary ;involuntary

B.   Involuntary; voluntary

C.   Both a and b

D.   None of the above

26: The _____ is the main means for transmitting messages between the brain and the body.

A.   Cortex

B.   Medulla

C.   Axon

D.   Spinal cord

27: The motor neurons of the sympathetic nervous system project from the _______ to the _______.

A.   Gray matter of the thoracic and lumbar spinal cord; sympathetic ganglia

B.   Sympathetic ganglia; gray matter of the thoracic and lumbar spinal cord

C.   Both a and b

D.   None of the above

28: Bones are composed mostly of __________.

A.   Magnesium

B.   Vitamins

C.   Calcium

D.   Cartilage

29: A remarkable fact about cells is that _____.

A.   Cells are very different but have similar properties

B.   Cell

C.   Vacuole

D.   Chloroplast

30: During the _______________, the neuron cannot generate another action potential.

A.   Na+, absolute refractory

B.   Saltatory

C.   Cardiac& smooth muscle and glands

D.   Sodium potassium pump

31: The tract that carries sensations from muscle spindles to the cns is the __________.

A.   Posterior column

B.   Anterior spinothalamic

C.   Lateral spinothalamic

D.   Spinocerebellar

32: In ________, one neuron synapses on several postsynaptic neurons.

A.   Somatic

B.   Convergence

C.   Divergence

D.   Absorption

33: In a(n) ________ synapse, current flows directly between cells.

A.   Electrical

B.   Ependymal cells

C.   Ependymal

D.   Multipolar

E.   Sensory

34: Penfield mapped locations of body parts on area s1 by _____.

A.   The somatosensory, auditory, and visual systems

B.   Stimulation of the skin; the object

C.   Stimulating S1 areas in humans, and asking where they felt body sensations

D.   Causes changes in somatosensory cortex for changes in sensory component of pain

35: The cochlea, semicircular canals, and vestibular sacs make up the _____ ear.

A.   Middle

B.   Cochlea

C.   Inner

D.   Outer

36: The ________ convey(s) information about head position with respect to gravity.

A.   Organ of corti

B.   Stapes

C.   Utricle and saccule

D.   Spiral organ

37: A nerve is a group of ________ bundled together

A.   Axons

B.   Hypothalamus.

C.   Interneurons.

D.   Preconventional

E.   Hypothalamus

38: The _______________ division of the ans functions mainly under ordinary, restful conditions.

A.   Hypothalamus

B.   Somatic

C.   Parasympathetic

D.   Brain and sacral

39: Normally, sodium and potassium leakage channels differ because ___________________.

A.   Sodium ions diffuse through leakage channels into the cell, but potassium ions diffuse through leakage channels out of the cell

B.   Sodium leakage channels require ATP to transport ions, but potassium leakage channels do not

C.   Sodium leakage channels are voltage-gated, but potassium leakage channels are ligand-gated

D.   Sodium leakage channels always remain open, but potassium leakage channels must be specifically activated to open

40: A/an ______ is administered to temporarily relieve anxiety and to reduce tension.

A.   Antipsychotic drug

B.   Anxiolytic drug

C.   Mood-stabilizing drug

D.   Psychotropic drug

41: The nucleus basalis is a key part of the brains system for ____.

A.   Attention

B.   Brain stem

C.   Midbrain and forebrain

D.   Pons and medulla

42: Bidirectional, instantaneous synaptic transmission is typical of __________.

A.   Depolarize

B.   Spatial summation

C.   The insulation

D.   Electrical synapses

43: The complete termination of metabolic processes is called _______________ death.

A.   Death

B.   Cellular

C.   Biological

D.   None of these

44: Parkinsonism is characterized by the loss of _____

A.   Dopaminergic innervation

B.   Neuron.

C.   Cerebrospinal fluid

D.   None of these

45: Pathological conditions that cause albuminuria include ________.

A.   Eating too much protein.

B.   Tumors of the urinary tract

C.   Poisoning.

D.   Hemolytic anemia.