During the peak of the action potential, the membrane becomes most permeable to
a. sodium
b. potassium
c. calcium
d. chloride
e. protein
B
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Deoxygenated arterial blood passing through pulmonary capillaries is supplied from the bronchial arteries entering each lung.
Answer the following statement true (T) or false (F)
Two prominent features of the clavicle are the conoid tubercle at the lateral end and the ________ tuberosity at the medial end
A) costal B) sternal C) acromial D) deltoid E) scapular
In addition to the synthesis of vitamin D, keratinocytes are able to carry out some other biologically important functions. Name at least two of these other functions.
What will be an ideal response?
Potassium efflux from most cells is driven by
a. the concentration gradient for potassium. b. the charge gradient across the membrane. c. the concentration gradient for sodium. d. the action of the Na+-K+ pump. e. none of these.