The resting membrane potential is mainly determined by __________.
A)the concentration of Na+
B)the concentration of protein anions outside the cell
C)the concentration of Cl-
D)the concentration gradient of K+ and the differential permeability of the plasma membrane to K+ and other ions
D)the concentration gradient of K+ and the differential permeability of the plasma membrane to K+ and other ions
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When the tympanic membrane vibrates with the same frequency as the incoming sound waves it is known as
A) resonance. B) amplitude. C) pitch. D) hertz. E) cycles.
The only type of muscle that is both striated and involuntary is ________ muscle
Fill in the blank(s) with correct word
Match the structure with the appropriate description.A. Formed when the right and left vertebral arteries uniteB. Supplies blood to the face, nose, and mouthC. Terminates by forming the middle cerebral arteriesD. Supplies blood to the arm and shoulder regionsE. Sense organs that monitor blood pressureInternal carotid artery
Fill in the blank(s) with the appropriate word(s).
Which cells are involved in cellular immunity?
A. Tcytotoxic cells B. Memory cells C. Neutrophils D. Plasma cells