Exam 8: Muscular System

In skeletal muscle cells,this abundant molecule may be used to transfer energy to ADP to form ATP.

The gap that separates a muscle cell membrane from the neuron cell membrane in a neuromuscular junction is called the

A sarcomere is best described as ________

During the aerobic respiration process,glucose is broken down into

The electrical impulse that triggers a contraction travels deep into a skeletal muscle fiber by means of

After death a condition called rigor mortis develops due to a sarcoplasmic increase in calcium levels along with a decreased level of

A response to nervous stimulation that originates repeatedly from the spinal cord and stimulates only a few muscle fibers at a time is

The muscle most responsible for a particular movement is called the prime mover or antagonist.

The less movable end of a skeletal muscle attachment is called the

Enlarged portions of the sarcoplasmic reticulum are called __________.

The time between the moment of stimulation and the beginning of contraction is called the

Acetylcholine released by a motor neuron crosses the synaptic cleft and reaches the motor end plate by diffusion.

Compared to skeletal muscle,smooth muscle

In skeletal muscle,the thick filaments are mainly composed of ___________.

Rigor mortis that occurs in skeletal muscles a few hours after death is due to

When a muscle undergoes atrophy in response to disuse,

During the anaerobic breakdown of glucose,glucose is broken down into

Muscles that assist a prime mover are called ________.

Smooth muscle contraction that occurs in wave-like motions to move contents along the length of tubular organs describes

In the initiation of muscle contraction,calcium ions bind to tropomyosin,exposing active sites on actin for cross-bridge formation.