Ambient Air,which Contains 21% Oxygen (O₂)and a Small Amount (0

question 26

Multiple Choice

Ambient air,which contains 21% oxygen (O₂) and a small amount (0.03%) of carbon dioxide (CO₂) ,is the environmental condition that best suits which type of organism?

• A)Aerobes
• B)Anaerobes
• C)Capnophiles
• D)Microaerophiles

Describe the effects of various stimuli and drugs on muscle contraction and relaxation.

Understand the concepts of latent phase, contraction phase, and relaxation phase in muscle activity.

Explain the physiological basis of muscle fatigue and factors contributing to it.

Understand different types of muscle contractions (isotonic, isometric, concentric, eccentric) and their characteristics.

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Definitions:

Actin Filaments

Protein fibers that play a vital role in cell movement and shape, as well as muscle contraction, being part of the cytoskeleton.

Endocytosis

is a cellular process in which substances are brought into the cell by engulfing them in a vesicle formed from the plasma membrane.

Vesicle

Small sac containing a liquid or gas, such as a blister in the skin or an intracellular, membrane-bounded sac.

Material

A substance or substances from which something is or can be made.