Question 1

Which of the following best describes the function of the prefrontal cortex?

Accepted Answer

Involved in complex cognitive behavior, decision making, and personality expression

Question 2

Which tract type in cerebral white matter connects the two hemispheres of the brain?

Accepted Answer

Commissural tracts

Question 3

A patient presents with tremors and rigidity. Which region of the midbrain is most likely involved in this condition?

Accepted Answer

Substantia nigra

Question 4

The decussation of the pyramids is a critical anatomical feature. Where is it located and what is its significance?

Accepted Answer

Located in the medulla oblongata; it is where motor fibers cross to the opposite side

Question 5

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

Accepted Answer

Production of cerebrospinal fluid

Question 6

Which meningeal layer is the toughest and most durable?

Accepted Answer

Dura mater

Question 7

New cerebrospinal fluid (CSF) is produced in which structure, and how often is it replaced?

Accepted Answer

Produced in the choroid plexus; replaced several times per day

Question 8

Which of the following substances is NOT excluded by the blood-brain barrier?

Accepted Answer

Lipid-soluble substances such as alcohol

Question 9

A lumbar puncture is performed to sample CSF. Why is the procedure typically done below the level of $$L_2$$?

Accepted Answer

Because the spinal cord ends at $$L_2$$, reducing risk of injury to the cord

Question 10

Which type of information is carried by the dorsal horn of the spinal cord?

Accepted Answer

Sensory information

Question 11

Which two structures merge to create a spinal nerve?

Accepted Answer

Dorsal root and ventral root

Question 12

Which of the following best describes a nerve plexus?

Accepted Answer

A network of intersecting nerves that serve specific regions of the body

Question 13

Which plexus is responsible for innervating the upper limb?

Accepted Answer

Brachial plexus

Question 14

Which of the following is a specific stimulus detected by a mechanoreceptor?

Accepted Answer

Pressure

Question 15

Which branch of the autonomic nervous system is associated with 'fight or flight' responses?

Accepted Answer

Sympathetic

Question 16

Which cranial nerve carries parasympathetic innervation to organs within the thorax and abdomen?

Accepted Answer

Cranial nerve X (Vagus)

Question 17

Albuterol is used to treat asthma. Which adrenergic receptor subtype does it primarily target, and what is the effect?

Accepted Answer

Targets $$\$$beta_2$$ receptors; causes bronchodilation

Question 18

Which of the following is a unique effect of the sympathetic nervous system?

Accepted Answer

Activation of sweat glands

Question 19

Which of the following best describes the characteristics of rods in the retina?

Accepted Answer

Sensitive to dim light and provide peripheral vision

Question 20

A patient with Raynaud’s disease experiences episodes triggered by cold or stress. Which physiological mechanism is primarily responsible?

Accepted Answer

Sympathetic overactivity causing vasoconstriction in extremities

Anatomy and Physiology I: Central and Peripheral Nervous System, Autonomic Nervous System, and Special Senses Study Guidance

Study Guide - Practice Questions