CDS Anatomy & Physiology Fundamentals 2

Question 1

Which division of the autonomic nervous system is primarily responsible for the 'fight-or-flight' response in individuals experiencing acute stress or pain?

Accepted Answer

Sympathetic division

Answer

The sympathetic division triggers fight-or-flight responses including increased heart rate, dilated pupils, and redirected blood flow to muscles.

Question 2

A client with a spinal cord injury at the C6 level would most likely retain function of which muscle group?

Accepted Answer

Wrist extensors

Answer

C6 innervates wrist extensors, meaning individuals with C6 injuries typically retain wrist extension while losing hand grip and lower extremity function.

Question 3

The myelin sheath surrounding nerve axons is produced by which type of cell in the peripheral nervous system?

Accepted Answer

Schwann cells

Answer

Schwann cells produce myelin in the peripheral nervous system, while oligodendrocytes perform this function in the central nervous system.

Question 4

Which structure connects the cerebral hemispheres and allows communication between the left and right sides of the brain?

Accepted Answer

Corpus callosum

Answer

The corpus callosum is the large band of white matter fibers that connects the two cerebral hemispheres and facilitates interhemispheric communication.

Question 5

In a person with paraplegia resulting from a thoracic spinal cord injury, which functions are most likely preserved?

Accepted Answer

Upper extremity strength and function

Answer

Thoracic spinal cord injuries cause paraplegia affecting the lower extremities and trunk, while upper extremity function remains intact.

(CDS) Certified Disability Specialist Practice Test

(CDS) Certified Disability Specialist Practice Test

CDS Anatomy & Physiology Fundamentals 2