A Nerve cell tells a muscle when to contract.
When the radial muscles of the iris contract, the pupil dilates or becomes larger.
During eupnea, the diaphragm and external intercostal muscles contract to facilitate expiration.
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.
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.
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.
The role of muscles in our body is enabling us to move our body, whn stimulated by a nerve. Muscles can contract as your brain tells them to. With out our muscles we would not be able to make any movements.
the nerves and the nervous system
Muscles contract and relax to move a joint. ... Muscles contract at a constant rate. Muscles contract and relax to move a joint.
Muscles can contract and shorten
muscles contract and relax by bring about movements.
They contract and relax
If the papillary muscles fail to contract the valves will prolapse. The papillary muscles are located in the ventricles and contract to prevent prolapse.
The nervous system does not tell muscles how to react. The nerves transmit electrical pulses that make muscles contract. Different nerves attached to different muscles strands control how a muscle reacts. For example, nerves going to some arm muscles when they contract may make your elbow bend. Nerves going to a different set of muscles when made to contract may make your arm straighten out at the elbow. Using all muscles in that area allows you to maintain a bent elbow in a specific position.
Smooth Muscles can, but Cardiac Muscles can not.
contract
Shorten
Yes, without the nerves the muscles would be rendered useless. The muscles MUST have stimulation from somehwere in order to contract.