Which best describes the thyroid cartilage?
A) Comprises the thyroid gland
B) Most superior part of the pharynx
C) Major supporting cartilage of the larynx
D) Composed of elastic cartilage
Answer: C
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Which of the following statements about the Na+/K+ pump is FALSE?
A) Its activity requires the expenditure of metabolic (cellular) energy. B) It transports Na+ and K+ in a 1:1 ratio. C) It is present in neurons. D) It transports Na+ out of the cell and K+ into the cell.
The funnel-shaped end of the uterine tube (fallopian tube) is the:
A) ampulla. B) fimbriae. C) infundibulum. D) mesosalpinx. E) serosa.
Where does ether exert its effects on nerve activity?
A) everywhere along a nerve, when a segment of the nerve is anesthetized B) only where it is in contact with the nerve C) in the anesthetized segment of a nerve, and distal to the anesthetized segment D) at the axon terminals of anesthetized fibers
What characteristic do simple diffusion and facilitated diffusion share?
A. Both require cellular energy for the transport of substances. B. Both move a substance from a region of higher concentration to one of lower concentration without using cellular energy. C. Both move water across a semipermeable membrane. D. Both require a special carrier molecule to move substances across the membrane.