Identify the function of microvilli.

ATI RN

ATI RN Test Bank

A. Aid in absorption B. Move materials past cells C. Provides a waterproof barrier D. Secrete mucous

Correct Answer: A

Rationale: Microvilli increase surface area on columnar cells for enhanced absorption (e.g., intestines).

What type of muscle tissue is found in the walls of hollow internal organs?

A. skeletal B. smooth C. cardiac D.

Correct Answer: B

Rationale: Smooth muscle lines hollow organs (e.g., gut, blood vessels) for involuntary movement.

Which type of gland secretes its products directly into the bloodstream?

A. mesoderm B. exocrine C. endocrine D. hormones

Correct Answer: C

Rationale: Endocrine glands release hormones into the bloodstream.

The two steps of cancer development are

A. initiation and promotion B. initiation and mutation C. promotion and vascularization D. metastasis and promotion

Correct Answer: A

Rationale: Cancer develops via initiation (DNA damage) and promotion (growth stimulation).

Afferent neurons carry nerve impulses from

A. CNS to muscles B. CNS to receptors C. Receptors to CNS D. Effectors organs to CNS

Correct Answer: C

Rationale: Afferent neurons transmit sensory information from receptors to the CNS.

$89/ 30 days

$150/ 90 days