Question 1

Which of the following best describes the functional relationship between the meninges, cerebrospinal fluid (CSF), and the blood-brain barrier in protecting the central nervous system (CNS)?

Accepted Answer

The meninges act as physical barriers, CSF cushions and nourishes the CNS, and the blood-brain barrier restricts passage of harmful substances.

Question 2

A patient presents with loss of fine motor control and balance. Which brain structure is most likely affected?

Accepted Answer

Cerebellum

Question 3

Which lobe of the cerebral cortex is primarily responsible for processing auditory information?

Accepted Answer

Temporal lobe

Question 4

During a reflex arc, which of the following correctly represents the sequence of events from stimulus to response?

Accepted Answer

Stimulus → Sensory receptor → Afferent pathway → Integration center → Efferent pathway → Effector → Response

Question 5

Which equation best represents the relationship between the refractive power ($$P) of $$the lens and its focal length ($$f) in $$meters?

Accepted Answer

$$P = \frac{1}{f}$$

Question 6

A person with damage to the dorsal root ganglion would most likely experience which of the following symptoms?

Accepted Answer

Impaired sensory input from the affected area

Question 7

Which of the following best distinguishes between the sympathetic and parasympathetic divisions of the autonomic nervous system?

Accepted Answer

Sympathetic division increases heart rate and dilates pupils; parasympathetic division decreases heart rate and constricts pupils.

Question 8

Which of the following sensory receptors is responsible for detecting changes in blood pressure?

Accepted Answer

Baroreceptor

Question 9

If a person is nearsighted (myopic), which anatomical change in the eye is most likely responsible?

Accepted Answer

The eyeball is too long, causing light to focus in front of the retina.

Question 10

Which of the following best describes the process of phototransduction in the retina?

Accepted Answer

Light activates photoreceptors, causing a change in membrane potential that initiates a neural signal.

Question 11

Which of the following structures is NOT part of the brainstem?

Accepted Answer

Cerebellum

Question 12

Which equation correctly represents the calculation of cerebrospinal fluid (CSF) pressure ($$P_{CSF}) $$given the force ($$F) $$applied over an area ($$A$$)?

Accepted Answer

$$P_{CSF} = \frac{F}{A}$$

Question 13

Which of the following best describes the function of the thalamus?

Accepted Answer

Acts as a relay station for sensory information to the cerebral cortex

Question 14

Which of the following is a correct sequence for the path of light through the eye?

Accepted Answer

Cornea → Aqueous humor → Lens → Vitreous humor → Retina

Question 15

Which of the following best explains the difference between rods and cones in the retina?

Accepted Answer

Rods are more sensitive to low light and provide peripheral vision; cones are responsible for color vision and visual acuity.

Question 16

Which of the following is NOT a function of the hypothalamus?

Accepted Answer

Coordination of voluntary movement

Question 17

Which of the following best describes the role of the peripheral nervous system (PNS)?

Accepted Answer

Connects the CNS to limbs and organs, transmitting sensory and motor signals

Question 18

Which of the following correctly identifies the three layers of the meninges from outermost to innermost?

Accepted Answer

Dura mater → Arachnoid mater → Pia mater

Question 19

Which of the following best describes the function of the somatic motor division of the PNS?

Accepted Answer

Regulates voluntary movements of skeletal muscles

Question 20

A patient is unable to perceive pain from a burn on their skin. Which type of sensory receptor is most likely malfunctioning?

Accepted Answer

Nociceptor

M5 Study Guide Final Exam

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