Question

Which statement best describes a cause and its effect that occurs during the process of muscle contraction?

Answer 1

heya!!

here is your answer ⤵️⤵️

Muscle do the processes of contraction and relaxtion.

there are three types of muscles

● straited muscles

● Unstraited muscles

● cardiac muscle.


hope my answer helps you ✌

Answer 2

Hello there!

Here are the choices for your question:

A. The presence of calcium ions within nerve cells causes the sarcomere to shorten.

B. The release of calcium ions causes myosin and actin to attach to each other.

C. The shortening of the sarcomere causes the release of calcium around the myofibrils.

D. The pull of myosin on actin causes the motor neuron to send a nerve impulse.

The answer is B. The release of calcium ions causes myosin and actin to attach to each other.

Calcium when released into the fiber stimulates muscle contraction. Interaction (sliding past one another) of actin and myosin filaments is responsible for muscle contraction where during muscle contraction, each sarcomere shortens that causes the Z discs to get closer to each other. Due to this, both the I bands and H zone almost completely disappear.

I hope this will help you!