A Simple Nervous System

question 75

Multiple Choice

A simple nervous system

• A)must include chemical senses and vision.
• B)includes sensory information but no effectors.
• C)has information flow in only one direction: toward an integrating center.
• D)has information flow in only one direction: away from an integrating center.
• E)includes sensory information,an integrating center,and effectors.

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Definitions:

Single Sarcomere

The smallest contractile unit of a muscle fiber, consisting of actin and myosin filaments, responsible for muscle contraction.

Sarcolemma

The cell membrane surrounding a muscle fiber, crucial in muscle contraction and conduction of nerve impulses.

Labeled Structure

A term indicating a diagram or image where specific parts have been marked with labels to identify them.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that is involved in muscle contraction, memory formation, and various other functions.