Gas Exchange in Animals Always Involves

question 6

Multiple Choice

Gas exchange in animals always involves

• A) cellular respiration.
• B) breathing movements.
• C) neural control.
• D) diffusion between internal body fluids and the outside medium.
• E) active transport of gases.

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Definitions:

Muscle Twitch

Contraction of a whole muscle in response to a stimulus that causes an action potential in one or more muscle fibers.

Sarcoplasmic Reticulum

The Sarcoplasmic Reticulum is an organelle in muscle cells storing calcium ions, essential for muscle contraction and relaxation.

Tetanus

A bacterial infection characterized by muscle spasms, often starting in the jaw, due to toxins produced by Clostridium tetani.

Sarcoplasm

The cytoplasm of a muscle fiber, containing the cellular components necessary for muscle contraction.