Exam 6: The Muscular System

Someone who has broken an arm and has had a cast on it for months will notice a distinct shrinking of the arm once the cast is removed.Why does this happen?

________ pairs up with troponin proteins to form a complex that regulates muscle contractions.

The depletion of O₂ in the muscles of an individual that has exercised for a long period of time is known as ________.

The attachment point of a muscle to a bone that can move is called the ________.

Why must tropomyosin cover the thin filament in just the right position before the muscle can relax?

When a muscle cramps,it is often due to dehydration.Why would stretching or massaging it relieve the condition?

The arrangement of muscles so that the action of one muscle is opposite to that of its partner is referred to as ________.

Aerobic exercises do not increase skeletal muscle size,but cause various changes in the body.Explain what changes aerobic exercises initiate.

After a period of exercise,a person will breathe heavily for some time after the activity has ceased.What is happening during this time as the oxygen debt is being paid?

________ is a condition in which there is an excessive stress on a tendon,causing inflammation.

Turkey is often served at Thanksgiving meals in which family members vie for portions of white or dark meat.Why is the breast meat of a turkey considered white meat,while the darker meat is found in the leg muscles?

Some insecticides interfere with the removal of acetylcholine from the synaptic cleft.What effect will this have on muscle contraction?

The muscle that extends and rotates the thigh when walking is called the ________.

What is the result of resistance exercise?

Match each definition in the first column to the correct term in the second column. -Protein that makes up the thick myofilament.

A(n)________ is a motor neuron and all the muscle cells that it stimulates.

When a muscle is stimulated before the muscle can fully relax,it can cause ________.

Match each definition in the first column to the correct term in the second column. -Bind to troponin in the sarcomere to initiate muscle contraction.

Which of these muscle types permit voluntary movement?

Which functions in the attachment of muscle to bone?