A muscle cramp is a sudden, painful contraction of a muscle, during which movement is difficult. What is happening at the cellular level during a muscle cramp?
A.

A lack of calcium causes the sarcomeres to lock together, preventing relaxation.

B.

Myosin and actin do not fully detach, so the muscle cannot relax.

C.

The proteins in the myofibrils become denatured, preventing relaxation.

D.

The motor neuron does not send a signal, so the muscle cannot relax.

Question

09-01-2019
Health

contestada

A muscle cramp is a sudden, painful contraction of a muscle, during which movement is difficult. What is happening at the cellular level during a muscle cramp?
A.

A lack of calcium causes the sarcomeres to lock together, preventing relaxation.

B.

Myosin and actin do not fully detach, so the muscle cannot relax.

C.

The proteins in the myofibrils become denatured, preventing relaxation.

D.

The motor neuron does not send a signal, so the muscle cannot relax.

Respuesta :

Otras preguntas

A taxpayer who loses in a U.S. District Court may appeal directly to the: a. Supreme Court. U.S. Tax Court. b. U.S. Court of Federal Claims. c. U.S. Circuit Cou

The larger value obtained when more glucose carriers were present corresponds to an increase in the rate of glucose transport. Explain why the rate increased. H

Excerpt from Book of Etiquette Lillian Eichler Whenever fruits are served the finger-bowl should follow. It is always used at the completion of the dinner. The

What’s the difference between a mixture in a compound

how do you say hello sir, what may i take your order?, in spanish

Can you show work to for y=4x-3?

List two differences between Plato's notion of the soul and Aristotle's?

How do you write y= 1/2 x+2 in standard form?

what does Martin Luther King Jr. mean when he said: "Let freedom ring"?

Broker Bill has several agents in his employ. Agent Smith, an "S-Corporation" himself, has his commission checks written out to his "S-Corporation." Because of

anilac anilac · Answer 1 · 2019-01-09T22:28:21+01:00

anilac anilac

09-01-2019

The answer to your question is B, Myosin and actin do not fully detach, so the muscle cannot relax.

Hope this helps!

Answer Link

Larus Larus · Answer 2 · 2021-10-29T12:07:40+02:00

During a muscle cramp, the myosin and actin do not fully detach and muscles fail to relax.

• A sudden and involuntary contraction or over shortening of muscle is termed a cramp. Cramps can take place in a smooth muscle or a skeletal muscle.

• The cramps of skeletal muscle may take place due to a lack of electrolytes like sodium or muscle fatigue.

• Cramps generally take place when the muscles fail to relax adequately because of the myosin proteins, which fail to detach fully from the actin filaments.

• The ATP levels must be large enough in skeletal muscle to combine with the myosin heads for them to detach or attach from the actin and permit relaxation or contraction.

• However, in the absence of adequate ATP levels, the myosin heads remain attached to actin filaments and cramps take place.

Thus, option B is correct, that is, the myosin and actin do not detach fully, and the muscles fail to relax.

To know more about:

https://brainly.com/question/11254641