Practice quiz

Question 1

Which of the following is damaged when there is damage to the structural support of the neuron?

Answer 1

cytoskeleton

Question 2

Which structure increases the surface area of the part of the neuron that transmits signals TOWARD the cell body?

Answer 2

dendritic spines

Question 3

Which cell is responsible for myelination of axons of spinal nerves?

Answer 3

schwann cell

Question 4

Which letter on the diagram to the right indicates the postsynaptic potential which makes it MORE LIKELY that an action potential will occur?

Answer 4

A

Question 5

Which of the following is an inhibitory neurotransmitter?

Answer 5

GABA

Question 6

A patient had damage to the area surrounding the spinal cord. She has lost sensation of the area damaged. Which structure was affected?

Answer 6

dorsal roots

Question 7

The ventral grey column contains:

Answer 7

motor neurons and interneurons

Question 8

Which arteries give rise to the anterior and posterior spinal arteries?

Answer 8

vertebral arteries

Question 9

The lobe of the brain that surrounds the corpus callosum and diencephalon on the medial aspect of the cerebral cortex is:

Answer 9

the limbic lobe

Question 10

Which of the following is the largest group of commissural fibers?

Answer 10

corpus callosum, which connects the two hemispheres

Question 11

Spinal nerves can be impinged as they exit the vertebral column if there is narrowing of which of the following?

Answer 11

inervertebral foramina

Question 12

A column of white matter bounded by sulci and fissures within the spinal cord is called a:

Answer 12

funiculus

Question 13

Which arteries give rise to the anterior and posterior spinal arteries?

Answer 13

vertebral arteries

Question 14

The lobe that forms the floor of the lateral sulcus is:

Answer 14

the insula

Question 15

The internal capsule is the most prominent group of projection fibers, meaning that they do which of the following?

Answer 15

connect higher levels of the cerebral hemisphere to lower levels on the same side

Question 16

CSF flows under which of the following layers?

Answer 16

arachnoid mater

Question 17

Which of the following spaces contain venous blood?

Answer 17

dural sinuses

Question 18

The CSF flows into the blood through which structure?

Answer 18

arachnoid granulations

Question 19

80% of cerebral blood flow comes from ______ and 20% comes from _______.

Answer 19

Internal carotid artery, vertebral arteries

Question 20

The posterior cerebral arteries are formed by which?

Answer 20

basilar artery

Question 21

The term leptomeninges refers to which of the following?

Answer 21

The arachnoid mater and the pia mater

Question 22

Which of the following spaces contain CSF?

Answer 22

ventricles of the brain
subarachnoid space
arachnoid cisterns

Question 23

The CSF is manufactured by which structure?

Answer 23

choroid plexus

Question 24

The posterior cerebral arteries are formed by which?

Answer 24

basilar artery

Question 25

Damage to the reticular formation could cause which of the following?

Answer 25

abnormal control of consiousness

Question 26

The pyramidal decussation is the location of which of the following?

Answer 26

crossing of motor tracts

Question 27

If a patient has damage to the brainstem, which of the following cranial nerves will definitely be spared?

Answer 27

CN I, olfactory nerve

Question 28

Which of the following nerves control eye movements?

Answer 28

CN III CN VI CN IV

Question 29

A baby is born with a mass in the lower sacral area and there is suspicion of a neural tube defect. Which of the following deficits is most likely if the spinal cord structures are involved?

Answer 29

Sensory and motor deficits in the lower extremities bilaterally

Question 30

During the action potential, depolarization occurs when which of the following occur?

Answer 30

Na flows into the cell

Question 31

A patient has a condition which causes insufficient levels of the neurotransmitter GABA in the brain. Knowing the usual role of GABA, what signs would you expect from its deficiency?

Answer 31

Overfiring of neurons causing conditions such as seizures or spasticity

Question 32

A patient has a condition in which his anterior funiculus is damaged. This will affect which of the following signals?

Answer 32

Sensory and motor signals

Question 33

A patient demonstrates weakness of four extraocular muscles of the left eye. As the student examines the patient, she also expects to find which of the following?

Answer 33

Left pupillary dilation

Question 34

As a student examines a patient's cranial nerves, she finds that the patient is unable to identify objects in the temporal visual fields. Which nerve is affected?

Answer 34

CN I