Question 1

The outer layer of the brain is gray matter but the outer layer of the spinal cord is white matter.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is NOT a function of the basal nuclei?

Accepted Answer

A)  inhibition of muscle tone 
B)  coordination of impulses related to posture 
C)  suppression of unnecessary motor activity 
D)  autonomic control activity

Question 3

Which of the following characteristics does NOT describe short-term memory?

Accepted Answer

A)  immediate storage 
B)  large capacity 
C)  permanently forgotten 
D)  transient modifications in functions

Question 4

Match the following structures to their descriptions by using the answer code (options may be used more than once or not at all).
-location of ascending and descending tracts

Accepted Answer

A) gray matter of spinal cord 
B) white matter of spinal cord 
C) dorsal root ganglion

Question 5

Indicate which nervous pathway is being described by writing the appropriate letter in the blanks by using the answer code (options may be used more than once or not at all).
-carry information from the periphery to the CNS

Accepted Answer

A) ascending tracts 
B) descending tracts 
C) afferent neurons 
D) efferent neurons

Question 6

What is the most correct sequence of activation of brain areas when one responds in writing to a verbal command?

Accepted Answer

A)  primary auditory cortex, Wernicke's area, Broca's area, supplementary motor cortex, primary motor cortex 
B)  primary auditory cortex, Broca's area, supplementary motor cortex, Wernicke's area, primary motor cortex 
C)  primary auditory cortex, Broca's area, Wernicke's area, supplementary motor cortex, primary motor cortex 
D)  primary visual area, Wernicke's area, Broca's area, supplementary motor cortex, primary motor cortex

Question 7

The right and left cerebral hemispheres perform identical functions except for controlling opposite sides of the body.

Accepted Answer

A) True 
 B)False

Question 8

Match the following structures to their descriptions by using the answer code.
-efferent fibres leave the spinal cord through this structure

Accepted Answer

A) dorsal horn 
B) dorsal root 
C) dorsal root ganglion 
D) ventral horn 
E) ventral root
F)lateral horn

Question 9

Match the spinal tract with its characteristic by using the following answer code (options may be used more than once or not at all)..
-tract for motor impulses providing muscle tone control

Accepted Answer

A) ventral spinocerebellar 
B) rubrospinal 
C) lateral corticospinal 
D) fasciculus cuneatus 
E) lateral spinothalamic

Question 10

Which statement best describes the arachnoid mater?

Accepted Answer

A)  It is the innermost meningeal layer. 
B)  It is a delicate, richly vascularized meningeal layer that is "cobwebby" in appearance. 
C)  It is a tough, inelastic membrane that covers the central nervous system. 
D)  It is involved with the formation of cerebrospinal fluid.

Question 11

Voluntary motor activity is mainly a function of the ____________________ lobe.

Accepted Answer

The answer of Voluntary motor activity is mainly a function...

Question 12

Which statement is correct for long-term potentiation?

Accepted Answer

A)  It refers to increased responsiveness to mild stimuli following a strong or noxious stimulus. 
B)  It refers to an increase in strength of existing synaptic connections in pathways involved in initial storage of declarative information following brief periods of stimulation. 
C)  It involves decreased neurotransmitter release from the presynaptic cells 
D)  It involves transient strengthening of pre-existing synapses.

Question 13

What is the most abundant type of neurons in the body?

Accepted Answer

A)  motor neurons 
B)  efferent neurons 
C)  afferent neurons 
D)  interneurons

Question 14

The blood-brain barrier prevents an increase in the concentration of potassium ions in the ECF surrounding brain cells.

Accepted Answer

A) True 
 B)False

Question 15

Which statement concerning cerebrospinal fluid is NOT correct?

Accepted Answer

A)  It is formed by the choroid plexuses and is reabsorbed across the arachnoid villi into the blood within the dural sinuses. 
B)  It serves as a shock-absorbing fluid to cushion the brain against jarring movements. 
C)  It comes into direct contact with the neuronal and glial cells. 
D)  It fills the subarachnoid space.

Question 16

Which statement best describes the primary motor cortex?

Accepted Answer

A)  It is located in the parietal lobes. 
B)  It is in the left cerebral hemisphere and controls the skeletal muscles on the right side of the body. 
C)  It is the only region of the brain involved in motor control. 
D)  It develops motor programs for specific voluntary tasks.

Question 17

A(n)____________________ is a bundle of peripheral neuronal axons,some afferent and some efferent,that are enclosed by a connective tissue covering and following the same pathway.

Accepted Answer

The answer of A(n)____________________ is a bundle of peripheral neuronal...

Exam 3: The Central Nervous System

The outer layer of the brain is gray matter but the outer layer of the spinal cord is white matter.

Which of the following is NOT a function of the basal nuclei?

Which of the following characteristics does NOT describe short-term memory?

Match the following structures to their descriptions by using the answer code (options may be used more than once or not at all) . -location of ascending and descending tracts

Indicate which nervous pathway is being described by writing the appropriate letter in the blanks by using the answer code (options may be used more than once or not at all) . -carry information from the periphery to the CNS

What is the most correct sequence of activation of brain areas when one responds in writing to a verbal command?

The right and left cerebral hemispheres perform identical functions except for controlling opposite sides of the body.

Match the following structures to their descriptions by using the answer code. -efferent fibres leave the spinal cord through this structure

Match the spinal tract with its characteristic by using the following answer code (options may be used more than once or not at all) .. -tract for motor impulses providing muscle tone control

Which statement best describes the arachnoid mater?

Voluntary motor activity is mainly a function of the ____________________ lobe.

Which statement is correct for long-term potentiation?

What is the most abundant type of neurons in the body?

The blood-brain barrier prevents an increase in the concentration of potassium ions in the ECF surrounding brain cells.

Which statement concerning cerebrospinal fluid is NOT correct?

Which statement best describes the primary motor cortex?

A(n)____________________ is a bundle of peripheral neuronal axons,some afferent and some efferent,that are enclosed by a connective tissue covering and following the same pathway.