The head of the humerus and the glenoid cavity form a ball-and-socket joint.
Answer the following statement true (T) or false (F)
True
Rationale: See the section “Shoulder Joint” and Figures 9-1 and 9-13.
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The parasympathetic neurons of the autonomic nervous system decrease the rate at which the pacemaker cells of the sinoatrial node drive the heart rate by secreting the neurotransmitter ________.
Fill in the blank(s) with the appropriate word(s).
What vitamin is absorbed in the terminal part of the ileum?
a. vitamin K b. vitamin E c. vitamin D d. vitamin B12 e. vitamin A
During the repolarization phase of an action potential, which of the following is the primary activity?
A) Sodium ions are flowing out of the cell. B) Sodium ions are flowing into the cell. C) Potassium ions are flowing into the cell. D) Potassium ions are flowing out of the cell.
ADH increases the permeability of the distal convoluted tubules and collecting ducts by
A. incorporating aquaporin-2 channels into the apical membrane. B. incorporating aquaporin-3 channels into the apical membrane. C. increasing the number of Na+ ? transport proteins in the membranes. D. decreasing the number of aquaporin-4 channels in the apical membrane.