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When the radial muscles of the iris contract, what effect does this have on the size of the pupil?
When the radial muscles of the iris contract, the pupil dilates or becomes larger.
During eupnea, which muscles contract to facilitate expiration?
During eupnea, the diaphragm and external intercostal muscles contract to facilitate expiration.
Do your respiratory muscles contract each time you exhale?
Yes, your respiratory muscles contract each time you exhale to push air out of your lungs. The diaphragm and intercostal muscles are involved in this process.
Why do muscles shorten when they contract?
Muscles shorten when they contract because the muscle fibers within the muscle bundle slide past each other, causing the muscle to contract and pull on the attached bones, resulting in movement.
What does it mean when muscles contract and how does this process occur in the body?
When muscles contract, they shorten and generate force. This process is controlled by the nervous system, which sends signals to the muscles to release calcium ions. These ions bind to proteins in the muscle cells, causing them to slide past each other and contract. This contraction allows the muscles to produce movement and perform various functions in the body.
What happens to your muscles when you are nervous?
They contract
What happens during isokinetic exercise Muscles contract at a constant rate. Muscles contract and relax to move a joint. Muscles do not contract at all. Muscles contract with very little body movement.?
Muscles contract and relax to move a joint. ... Muscles contract at a constant rate. Muscles contract and relax to move a joint.
What happens if the papillary muscles fail to contract?
If the papillary muscles fail to contract the valves will prolapse. The papillary muscles are located in the ventricles and contract to prevent prolapse.
What happens when the rib muscles contract?
you exhale (:
What happens to the muscles in a runner's body when they run?
They contract and release to move your body
What happens to rib muscles when they relax?
The internal intercostal muscles relax and the external intercostal muscles contract, pulling the ribcage upwards and outwards.
What happens to your muscles to help move?
The muscles contract, while others move foreward, which allows the body part to move.
What happens in the wall of the uterus to push the baby out.?
The muscles contract which in turn push the baby out.
What happens if cardiac muscles do not contract?
You would get a heart attack otherwise known as a cardiac arrest.
What happens when these muscles contract?
When muscles contract, the brain sends signals through the nervous system to the motor neuron that supplies several muscle fibers. There are different versions of contraction, which includes voluntary and involuntary.
What happens when the arrector pili muscles contract?
Your hair stands up and you get goosebumps
What muscle can do?
Muscles can contract and shorten
