random

hajajaaja

A protein involved in muscle contraction that together with troponin occurs in the thin filaments of muscle tissue.

tropomyosin

Pyruvic acid reacts to produce ____ when oxygen supply is low.

lactic acid

The amount of oxygen needed to convert accumulated lactate into glucose and return blood and tissue oxygen levels to normal.

oxygen debt

An enzyme that catalyzes the breakdown of ATP to ADP and phosphate.

ATPase

A red protein that carries and stores oxygen in muscle cells.

Myoglobin

An enzyme that decomposes acetylcholine.

Acetylcholinerase

A molecule that stores phosphates to provide energy for muscular contraction.

Creatine Phosphate

The neurotransmitter that stimulates skeletal muscle fibers

Acetylcholine

A ________ is a motor neuron and the muscle fiber that it controls.

motor unit

A ___ is a motor neuron and the muscle fiber that it controls.

motor unit

The sustained contraction that occurs even when a muscle appears to be at rest.

muscle tone

The brief delay between the time of stimulation and the beginning of contraction.

latent period

The contractile response of a single muscle fiber to a single impulse.

twitch

The type of muscle contraction associated with movement that involves the shortening of the muscle.

isotonic contraction

A sustained muscle contraction that does not allow for the muscle to relax.

complete tetanic contraction

The effect of a series of stimuli of increasing frequency on a muscle fiber.

summation

An increase in the number of motor units activated during a contraction.

Recruitment

The type of muscle contraction that generates a force without shortening

isometric contraction

A broad sheet of fibrous connective tissue that attaches a muscle to connective tissues of adjacent muscles is called a(n)

aponeurosis or aponeuroses

fascia

Dense connective tissue surrounding and separating muscles

A band

Z line

A - transverse tubule

B - Z line

C - sarcoplasmic reticulum

D - myofibril

The type of synapse formed between a motor neuron and a muscle fiber is called a(n)