0
What else can I help you with?
When a muscle contracts how does actin and myosin get shorter?
When the muscle contracts, it gets shorter. When it relaxes, it gets longer.
Are striated under skeletal muscle?
Because muscle cells can only contract, not extend, skeletal muscles most work in pairs. While one muscle contracts, the other muscle in the pair relaxes to its original length.
What does the cardiac muscle do in the heart?
It contracts, so the blood flows into the arteries. Then, the cardiac muscle relaxes, so the blood flows back. The backflowing blood fills the valves in the arteries, so it cannot flow back into the heart itself. While the cardiac muscle relaxes, new blood flows into the ventricles and atriums from other veins.
What do cardiac muscles do in the heart?
It contracts, so the blood flows into the arteries. Then, the cardiac muscle relaxes, so the blood flows back. The backflowing blood fills the valves in the arteries, so it cannot flow back into the heart itself. While the cardiac muscle relaxes, new blood flows into the ventricles and atriums from other veins.
How does the triceps and biceps work together to straighten your arm?
When lowering arm biceps relax and triceps contracts. When one contracts the other relaxes when you move it forward and downward.
Bending the arm what the muscles are doing?
The Bicep muscle (one on top) is contracting The Tricep muscle (one below) if relaxing The Bicep and Tricep muscles are antagonistic- they work as opposites, so when one contracts, the other relaxes.
What is the function of a cardiac?
The heart muscle is the third type of muscle.We also call it cardiac.It contracts and relaxes all day long so you won not have a heart attack.This muscle is involunatatry, and all your blood flows through it,too.
How do skeletal muscles work together?
Skeletal muscles have an antagonistic relationship. To move about a joint one muscle contracts while its opposite muscle relaxes. For example, movement of the forearm is done through the bicep and tricep along the elbow joint.as one muscle contracts, the other relaxes
Why does the heart contain elastic tissue?
The heart is constantly active muscle that contracts, relaxes and pumps blood. It is necessary for it to be elastic so that it can retain it shape and still be flexible enough to allow for the contractions, relaxation, and pumping.
When the muscle contracts what happens to the tendon and bone?
When the muscle contracts, the tendon pulls on the bone to create movement. The tendon is the connective tissue that attaches the muscle to the bone, so when the muscle contracts, it exerts force on the tendon, which in turn moves the bone.
What muscles work in antagonistic pairs?
Antagonistic pair is a combination of agonist and antagonist muscles that only one contracts and the other one relaxes. The biceps in a human body are an example of it.
What is in the black of the human eye?
The black of the human eye is a hole called the pupil. The color part is really a muscle which contracts and dilates depending on how much light there is in the environment. When there is a lot of light, the iris (colored muscle) contracts, making the "hole" smaller. When there is limited light in an environment, the iris relaxes, which in turn causes the pupil to increase size. So the black is just a whole in the muscle where light enters the eye to be focused by the lens and computed by the brain.
