Question 1

A patient presents with sudden onset of facial paralysis on one side, inability to close the eye, and drooping of the mouth. Which cranial nerve is most likely affected, and what is the name of this condition?

Accepted Answer

Cranial nerve VII (Facial); Bell's Palsy

Question 2

Which of the following best describes the function of the thalamus in sensory pathways?

Accepted Answer

It acts as a central relay station, providing crude perception of touch, pressure, pain, and temperature.

Question 3

A patient with a traumatic head injury develops an epidural hematoma. Where is the blood accumulating?

Accepted Answer

Above the dura mater, between the skull and dura

Question 4

Which brain structure is primarily responsible for maintaining balance and coordinating smooth, voluntary muscle movements?

Accepted Answer

Cerebellum

Question 5

A lesion in the right precentral gyrus would most likely result in which of the following?

Accepted Answer

Loss of voluntary motor control on the left side of the body

Question 6

Which of the following best explains why hydrocephalus can cause brain damage in adults but not typically in infants?

Accepted Answer

The adult skull is rigid and cannot expand, leading to increased intracranial pressure.

Question 7

Which pathway carries fine touch and proprioceptive information to the brain, and through which structure does it relay before reaching the cortex?

Accepted Answer

Posterior column pathway; relays through the thalamus

Question 8

Which of the following cranial nerves is responsible for regulating heart rate, respiratory rate, and sensations of hunger and fullness?

Accepted Answer

X Vagus

Question 9

A patient is unable to recognize spoken or written language but can speak fluently, although the speech is nonsensical. Which area of the brain is most likely damaged?

Accepted Answer

Wernicke's area in the left hemisphere

Question 10

Which of the following best describes the function of the limbic system?

Accepted Answer

Processing of emotions and formation of new memories

Question 11

Which type of sensory receptor is responsible for detecting changes in blood pressure by responding to stretch in blood vessels?

Accepted Answer

Baroreceptors

Question 12

Which of the following statements about the corticospinal tract is correct?

Accepted Answer

It is a descending pathway that carries motor commands from the cortex to skeletal muscles.

Question 13

A patient with a lower motor neuron lesion would most likely present with which of the following symptoms?

Accepted Answer

Flaccid paralysis (loss of muscle tone)

Question 14

Which of the following best describes the role of the choroid plexus in the brain?

Accepted Answer

It produces cerebrospinal fluid (CSF) within the ventricles.

Question 15

Which of the following is TRUE regarding the decussation of pyramids in the medulla oblongata?

Accepted Answer

It causes most skeletal muscles to be controlled by the opposite side of the cerebral cortex.

Question 16

Which of the following best explains why the sensory homunculus has a disproportionately large area for the hands and face?

Accepted Answer

These regions have a higher density of sensory receptors.

Question 17

Which cranial nerve is responsible for tongue movement, swallowing, and speech?

Accepted Answer

XII Hypoglossal

Question 18

A patient is unable to move their right arm and leg after a stroke. The lesion is most likely located in which area of the brain?

Accepted Answer

Left precentral gyrus (primary motor cortex)

Question 19

Which of the following best describes the function of the pineal gland?

Accepted Answer

Secretes melatonin to regulate the sleep-wake cycle

Question 20

Which of the following is a correct sequence for the three-neuron sensory pathway from the skin to the cortex?

Accepted Answer

First-order neuron → second-order neuron → third-order neuron → cortex

Brain, Cranial Nerves, and Sensory/Motor Pathways: Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards