Muscular System Physiology

Front

What is the Sarcoplasmic Reticulum?

Back

A structure within a skeletal muscle cell that contains calcium reservoirs and channels, stimulated through electrical impulses.

Front

Where is Smooth Muscle NOT found in the body?

Back

Within the walls of the heart.

Front

What is Eccentric Contraction?

Back

Contraction of a muscle while the muscle lengthens.

Front

What is Hypertrophy in skeletal muscles?

Back

The response of skeletal muscles to increased stress, resulting in an increase in the size of muscle fibers.

Front

What does Hyperplasia refer to?

Back

An increase in the number of cells within a tissue.

Tags

NGSS.HS-LS1-4

Front

What is the function of the Sarcolemma?

Back

The cell membrane of a muscle cell that surrounds the sarcoplasm and helps transmit electrical impulses.

Front

What is the difference between Concentric and Eccentric Contraction?

Back

Concentric contraction occurs when a muscle shortens while generating force, while eccentric contraction occurs when a muscle lengthens while generating force.

Front

What is Isometric Contraction?

Back

A type of muscle contraction where the muscle generates force without changing length.

Front

What is the role of Tropomyosin in muscle contraction?

Back

A protein that blocks the binding sites on actin filaments, preventing muscle contraction until calcium ions bind to troponin.

Front

What is the primary energy source for muscle contraction?

Back

Adenosine triphosphate (ATP).