0
When a muscle cell responds to stimulus calcium is released from where?
Wiki User
∙ 10y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
When a muscle cell responds to a stimulus calcium is released from the?
Sarcoplasmic reticulum stores and releases calcium ions within striated skeletal muscles.
What is the all none law of muscle response?
all-or-none law is the principle that the strength by which a nerve or muscle fiber responds to a stimulus is not dependent on the strength of the stimulus. If the stimulus is any strength above threshold, the nerve or muscle fiber will give a complete response or otherwise no response at all
In a recording of a muscle twitch the delay between the time a stimulus is applied and the time the muscle responds is called?
Latent period
When a nerve signals a muscle to contract where is calcium released?
calcium released by sarcoplasmic reticulum.
Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called?
The short period following the arrival of a stimulus at a skeletal muscle cell is called the latent period. During this time, the muscle cell is preparing for contraction by releasing calcium ions and activating the contractile proteins.
How does the threshold stimulus influence muscle contraction?
The threshold stimulus is the stimulus required to create an action potential. So any stimulus under this level will not cause muscle contraction, while a stimulus above this level will cause the muscle to contract. The higher the stimulus the more muscle fibers are recruited, and thus the higher the response.
When a muscle is stimulated by a nerve impulse what electrolyte is released into the myofibrils calcium oygen potassium sodium?
Calcium
What substance is released by the nervous system and excites muscle cells?
Calcium
What does the long refractory period observed in cardiac muscle mean?
it means that no matter what stimulus is applied the cardiac muscle will not be able to contract
Stimulus at which the muscle first contracts perceptibly?
Threshold stimulus
Which substance is stored in the muscle's endoplasmic reticulum and then released when a nerve signal stimulates a muscle fiber?
Calcium ions
What is the purpose of the sarcomere?
To contract when calcium ions are released into the muscle cell cytoplams.
