In a mixed nerve,
A. chemical synapses occur along with electrical synapses.
B. individual axons transmit both sensory and motor information.
C. astrocytes are interspersed with ependymal cells.
D. some axons transmit sensory information and others transmit motor information.
Answer: D
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Which of the following is a function of connective tissues?
A) They produce active movement. B) They provide protection for underlying tissues. C) They support, surround, and interconnect other tissue types. D) They are completely impermeable, and therefore prevent water loss. E) They store wastes.
Osmosis is the movement of
A) water molecules from a high concentration to a low concentration through a selectively permeable membrane. B) ions from a low pressure region to a high pressure region through a selectively permeable membrane. C) water molecules from a low concentration to a high concentration through a selectively permeable membrane. D) molecules from a high concentration to a low concentration.
The special functions of plasma and organelle membranes depend primarily on the specific composition of the phospholipids of those membranes
Indicate whether the statement is true or false.
The upper lip and apex of the nose of swine is the:
A) cheek B) mouth C) snout D) muzzle