Describe the process of relaxation of a skeletal muscle fiber.
What will be an ideal response?
Relaxation is an active process, resulting from loss of acetylcholine from the receptors as ACh is broken down and there is no further release. This allows the muscle cell to repolarize, which stops the release of calcium from the sarcoplasmic reticulum (SR). The pumping of calcium back into the SR causes the troponin to move the tropomyosin into a position that it allows only a low force crossbridge to form and the cell to relax.
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The bony part that helps form the rounded projection of the shoulder is the
A. triangle of auscultation. B. acromion of the scapula. C. humerus head. D. spine of the scapula. E. clavicle.
Pregnant women are encouraged to get flu shots so that the maternal ________ can pass through the placenta to the fetus
A) IgG B) IgE C) IgD D) IgM E) IgA
On average, what percentage of the adult female's body is made of water?
A) 15% B) 30% C) 50% D) 65% E) 80%
The major neural response to a stressful stimulus is generalized activation of the __________ nervous system
Fill in the blank(s) with correct word