Question 1

Which embryonic germ layer gives rise to the neural tube, which later develops into the central nervous system?

Accepted Answer

Ectoderm

Question 2

A patient suffers a stroke that damages the corpus callosum. Which of the following is most likely to be impaired as a result?

Accepted Answer

Communication between the two cerebral hemispheres

Question 3

The cerebrum develops from which secondary brain vesicle during embryonic development?

Accepted Answer

Telencephalon

Question 4

A patient with a lesion in the Wernicke’s area would most likely experience which of the following symptoms?

Accepted Answer

Difficulty understanding spoken and written language

Question 5

Which structure separates the cerebellum from the cerebrum?

Accepted Answer

Tentorium cerebelli

Question 6

The postcentral gyrus is the location of which functional area?

Accepted Answer

Primary somatosensory cortex

Question 7

Which nerve controls the diaphragm and originates from the cervical plexus?

Accepted Answer

Phrenic nerve

Question 8

A patient presents with loss of sensation in the median aspect of the thigh. Which nerve and plexus are most likely affected?

Accepted Answer

Obturator nerve from the lumbar plexus

Question 9

Which cranial nerve is responsible for both motor impulses of chewing and sensory impulses from most of the face and tongue?

Accepted Answer

Cranial nerve V (Trigeminal)

Question 10

Which of the following best describes the function of descending spinal tracts?

Accepted Answer

They carry motor commands from the brain to the body.

Question 11

A patient is unable to move their eyes voluntarily. Which brain region is most likely damaged?

Accepted Answer

Frontal eye field

Question 12

Which nerve innervates the extensor muscles of the arm and forearm and arises from the brachial plexus?

Accepted Answer

Radial nerve

Question 13

The thin, fibrous, middle layer of the meninges is called the:

Accepted Answer

Arachnoid mater

Question 14

Which structure is involved in long-term memory formation?

Accepted Answer

Hippocampus

Question 15

The dorsal root ganglion contains the cell bodies of which type of fibers?

Accepted Answer

Sensory fibers

Question 16

Which cranial nerve is also known as the accessory nerve and controls the sternocleidomastoid muscle?

Accepted Answer

Cranial nerve XI

Question 17

Which cranial nerve is responsible for muscle control of the tongue for speech?

Accepted Answer

Hypoglossal nerve (Cranial nerve XII)

Question 18

Which cranial nerve is commonly called the vagus nerve and is responsible for parasympathetic control of the heart, lungs, and digestive tract?

Accepted Answer

Cranial nerve X

Question 19

How many nerves belong to each plexus? Cervical = $$8$$, Brachial = $$5$$, Lumbar = $$6$$, Sacral = $$5. $$Which of the following is correct?

Accepted Answer

Cervical = $$8$$, Brachial = $$5$$, Lumbar = $$6$$, Sacral = $$5$$

Question 20

The muscles between the ribs are innervated by which nerves, and from which region of the spinal cord do they extend?

Accepted Answer

Intercostal nerves from the thoracic region

Anatomy & Physiology: Nervous System and Neuroanatomy Practice Quiz Guidance

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