0
What is the first phase after a stimulus in a muscle contraction?
Wiki User
∙ 11y ago
Latent Phase
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Why is it only possible to induce an extrasystole during relaxation?
The cardiac muscle is incapable of reacting to any stimulus before approximately in the middle of phase 3. It will not react to a normal cardiac stimulus before phase 4.
The terms systole and diastole refer respectively to the?
contraction phase and relaxation phase of the ventricles
The R wave of the ECG is most closely associated with which phase of the cardiac contraction cycle?
Ventricular contraction.
What is the deep muscle of the thorax that promote the inspiratory phase of breathing?
The deep muscle of the thorax that promote the inspiratory phase of breathing is the external intercostal. It is a muscle that originates from the lower border of a rib.
What role does the biceps muscle play in downward phase of close grip barbell press?
The close grip barbell press is an exercise that works out your Tricep muscle exclusively. Your bicep muscles do not play any part in the downward phase of this exercise.
What are the three stages of muscle cell contraction?
A Muscle Twitch is a single contraction of skeletal muscle. The three distinct phases are latent, contraction, and relaxation. Latent Phase: Is the interval from the stimulus application until the muscle begins to contract (shorten). Note that there is no traced activity during this phase, but there are some electrical and chemical changes taking place during this phase. Contraction Phase: This phase is when the muscle fibers shorten, the tracings will show during this phase (a) peak(s). Relaxation Phase: This phase is represented by the downward curve in your tracings, this is when the muscle is going back to its original state of relaxation and the muscle will once again lengthen
What phase is between stimulus of a muscle and the shortening of the muscle?
belly
What is second stimulus before relaxation causes increased force called?
Contraction phase
What muscle contraction occurs in the biceps brachii during the upward phase of the bicep curl?
a concentric contraction- a concentric contraction involves the muscle length, shortening during a contraction! YA-trick-YA!
What is an example of an isotonic contraction?
An Isotonic contraction is when a muscle becomes longer or shorter to produce force and therefore an example is a bicep curl. During the downward phase your muscle (bicep) lengthens and during the upward phase your muscle (bicep) shortens.
What is the premotor phase of reaction time?
The time it takes from recognizing a stimulus to the initiation of a muscle response (the muscle response can be recorded using an EMG).
Why is it only possible to induce an extrasystole during relaxation?
The cardiac muscle is incapable of reacting to any stimulus before approximately in the middle of phase 3. It will not react to a normal cardiac stimulus before phase 4.
Why is it only possible to induce an extrasystole during relaxation period?
The cardiac muscle is incapable of reacting to any stimulus before approximately in the middle of phase 3. It will not react to a normal cardiac stimulus before phase 4.
What kind of muscle contraction occurs in the rectums femoris during the lowering phase of a wall squat?
isometric
What result would be expected if an additional stimulus equal in intensity to the first were applied to the muscle at the 60 millisecond time point?
the muscle would increase in tension to a level greater than that measured at the beginning of phase C.
The period of a muscle twitch during which an action potential causes the release of calcium from the sarcoplasmic reticulum is the A stimulatory phase B lag phase C relaxation phase D cont?
D- contraction phase
Which neurotransmitter is responsible for the excitatory phase of muscle contraction a. dopamine b. serotonin c. GABA d. none of the above?
Acetyl Choline
