What Controls the Movement of Rectus Abdominis, a Skeletal Muscle

question 69

Multiple Choice

What controls the movement of rectus abdominis, a skeletal muscle on the anterior surface of the body?

• A) posterior root
• B) posterior ramus
• C) anterior ramus
• D) posterior (dorsal) root ganglion

Understand the eye's accommodation reflex and its role in focusing.

Learn about the innervation of eye muscles and their functions in reflexes.

Identify and explain visual phenomena and tests, including the blind spot and astigmatism.

Understand the physiological responses of the eye to changes in lighting conditions.

---

Definitions:

Oligodendroglial Cell

A type of glial cell in the central nervous system responsible for the formation and maintenance of myelin sheaths around neurons.

Schwann Cell

A type of glial cell located in the peripheral nervous system that wraps around nerve fibers, forming the myelin sheath which speeds up electrical impulses.

Astrocyte

A type of glial cell in the brain that provides support and nutrition to neurons, maintains the blood-brain barrier, and plays a role in the repair and scarring process of the brain and spinal cord.

Efferent

Referring to nerve fibers that carry signals away from the central nervous system to effectors such as muscles and glands.