The Radial Muscles of the Iris Are Innervated by the Nervous

question 71

Multiple Choice

The radial muscles of the iris are innervated by the nervous system and their contraction causes pupillary .

• A)sympathetic : constriction
• B)somatic : constriction
• C)parasympathetic : dilation
• D)parasympathetic : constriction
• E)sympathetic : dilation

---

Definitions:

Immune Response

The body's defense mechanism against pathogens, involving both innate and adaptive immune systems.

Growth Factors

Naturally occurring substances capable of stimulating cellular growth, proliferation, and cellular differentiation, usually considered essential for cell signaling.

Exocrine Role

Refers to the function of exocrine glands in secreting substances through ducts to an external or internal surface.

Pancreas

A glandular organ in the digestive and endocrine system of vertebrates producing digestive enzymes and hormones like insulin.