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Where do nerve impulses first stimulate a skeletal muscle fiber?
The motor nerve cells control the skeletal muscle
What qualities do cardiac and skeletal muscles share?
Cardiac and skeletal muscles are both striated muscles that contract in response to nerve impulses. They contain sarcomeres as their basic contractile unit and rely on the presence of calcium ions for muscle contraction. Additionally, both types of muscles are composed of muscle fibers that vary in size and length.
Impulses from motor neurons control the contraction of skeletal muscles?
false
What is A neuron that can cause muscles to contract?
Efferent motor neurons stimulate muscle contractions.
What muscle skeletal muscles do to move?
Skeletal muscles rely on contractions to move the bone they are attached to so it is contract and relax
What tells muscles when to contract?
Muscles contract in response to signals from the nervous system. Motor neurons release neurotransmitters that stimulate muscle fibers to generate a contraction. This process is initiated by electrical impulses called action potentials that travel along the nerves to the muscle cells.
What do the nerves carry to the muscles?
Electrical impulses telling them to contract or relax.
What proteins help contraction of skeletal muscles?
Actin and myosin cause muscles to contract.
Which muscle type can voluntarily contract and relax?
Skeletal muscles .
What is the differences between myocardial muscles and skeletal muscles?
Skeletal muscles: packed together, attach to, and cover the skeleton. obvious striations. VOLUNTARY muscles. contract rapidly but TIRE EASILY. responsible for overal body motility. extrememly adaptable (can exert forces from only onces to 70 lbs) Cardiac (myocardial): only in the heart. striated and NOT VOLUNTARY. contracts at a steady rate. contolled by nervous system and bodily changes. ONCE YOU LOSE IT, ITS GONE FOR GOOD. CAN'T FATIGUE. has to have stimulus great enough to stimulate all of the muscles of none will contract (where as skeletal muscles can be forced into twiches where only a small part of the muscle will contract)
Do motor neurons send impulses to muscles or glands?
Motor neurons send impulses to muscles to stimulate muscle contraction. Glands are typically innervated by autonomic neurons that regulate secretions like hormones and enzymes.
What additional skeletal muscles are utilized in an ERV activity?
abdominal-wall muscles and the internal intercostal muscles contract.
