Ch 6 Muscle Review

Front

What is an isometric contraction?

Back

A type of muscle contraction where the muscle does not shorten and there is no movement.

Front

What is the most efficient energy pathway for muscles?

Back

Aerobic pathway, which uses oxygen to produce energy.

Front

What neurotransmitter is specific for muscle cells?

Back

ACh (Acetylcholine), which helps transmit signals for muscle contraction.

Front

What energy releasing compound do muscles store for about 4-6 seconds?

Back

ATP (Adenosine Triphosphate), which provides energy for muscle contractions.

Front

What type of muscle is found in the walls of hollow organs?

Back

Smooth muscle, which is involuntary and helps move substances through organs.

Front

What is the role of ATP in muscle contraction?

Back

ATP provides the energy needed for muscle fibers to contract.

Front

What is the difference between aerobic and anaerobic respiration?

Back

Aerobic respiration uses oxygen and produces more energy, while anaerobic respiration does not use oxygen and produces less energy.

Front

What type of muscle is responsible for voluntary movements?

Back

Skeletal muscle, which is under conscious control.

Front

What is the function of calcium ions (Ca++) in muscle contraction?

Back

Calcium ions trigger the interaction between actin and myosin, leading to muscle contraction.

Front

What is a muscle fiber?

Back

A muscle fiber is a single muscle cell that can contract and is part of a muscle.