Understanding the Muscular System: Anatomy and Physiology Quiz

1. What are the functions of muscles?

- Movement- Body support and maintence of Posture- Production of heat

Digestion

Vision

Respiration

Muscles play a key role in various bodily functions, with their primary functions being movement, body support, and heat production.

Explanation

Muscles play a key role in various bodily functions, with their primary functions being movement, body support, and heat production.

2. What are the main properties of muscle?

Distortion (deform)

Contraction (shorten and elongate)excitation (ability to respond to a stimulus)extension (elongate)elasticity (return back to normal)

Expansion (enlarge)

Compression (squeeze)

Muscles have the ability to contract, respond to stimuli, extend, and return to their original shape due to their unique properties.

Explanation

Muscles have the ability to contract, respond to stimuli, extend, and return to their original shape due to their unique properties.

3. What is the primary function of the sarcoplasmic reticulum in muscle cells?

Produces energy for muscle contractions

Regulates blood flow to the muscles

Produces contractile fibersMyosin (thick) and Actin (thin)Troponin and Tropomyosin are associated with Actin

Stores water for muscle hydration

The sarcoplasmic reticulum is responsible for producing contractile fibers in muscle cells through the interaction of myosin (thick) and actin (thin) filaments. Troponin and tropomyosin are associated with actin and play a role in regulating muscle contraction.

Explanation

The sarcoplasmic reticulum is responsible for producing contractile fibers in muscle cells through the interaction of myosin (thick) and actin (thin) filaments. Troponin and tropomyosin are associated with actin and play a role in regulating muscle contraction.

4. What is sarcoplasm?

Living material within a muscle cell

A mineral commonly found in bones

A type of protein found in plants

A small organelle within a cell

Sarcoplasm refers to the living material within a muscle cell, which includes cytoplasm and other specialized organelles essential for muscle function. It is not a type of protein found in plants, a mineral commonly found in bones, or a small organelle within a cell.

Explanation

Sarcoplasm refers to the living material within a muscle cell, which includes cytoplasm and other specialized organelles essential for muscle function. It is not a type of protein found in plants, a mineral commonly found in bones, or a small organelle within a cell.

5. What is the Sarcolemma?

A protein found in the blood responsible for clotting.

A structure within a plant cell responsible for photosynthesis.

A type of connective tissue found in the lungs.

Cell membrane of a muscle cellhas invaginations called T Tubules

The correct answer refers specifically to the cell membrane of a muscle cell that contains T Tubules, which are essential for muscle contraction.

Explanation

The correct answer refers specifically to the cell membrane of a muscle cell that contains T Tubules, which are essential for muscle contraction.