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When weak but smooth muscle contraction is desired a few motor units are stimulated at a?
rapid rate
When a weak but smooth muscle are desired what are stimulated at a rapid rate?
few motor units
Which type of muscle ca be stimulated by norepinephrine?
smooth muscle
What of the muscle tissue can sustain longer contraction?
smooth muscle
Where are the calcium ions stored in a muscle fiber?
Calcium ions in muscle fibers are stored in the sarcoplasmic reticulum, which is a specialized form of endoplasmic reticulum found in muscle cells. When a muscle is stimulated to contract, the sarcoplasmic reticulum releases calcium ions into the cytoplasm, triggering muscle contraction.
Which type of muscle CANNOT contract without being stimulated by the nervous system?
Cardiac muscle. Unlike skeletal and smooth muscle, the contraction of cardiac muscle is involuntary and requires stimulation from the nervous system. This ensures that the contractions of the heart are synchronized and coordinated.
A maximal sustained muscle contraction is called a?
tetanic contraction.
What conditions cause contractions of arteriole smooth muscle?
Asthma causes contraction of the bronchial smooth muscle.
What are the muscles that are slow in contraction and relaxation?
smooth muscle
What does noradrenaline do?
It can cause vascular smooth muscle contraction
Why is the endothelium smooth?
Because it is an involuntaru muscle contraction
What is the type of contraction that Peristalsis is seen in?
smooth muscle
