Jessica is sitting in a cafe and excess lacrimal fluid is spilling over her lower palpebrae. This means that Jessica
A. is drooling.
B. has an middle ear infection.
C. has a runny nose.
D. is crying.
Answer: D
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Ribosomes are:
a. composed mostly of a type of nucleic acid b. sometimes attached to mitochondria forming “rough” mitochondria c. important sites for energy release d. none of the above
Select the incorrect association
a. cochlear duct/endolymph. b. malleus/inner ear. c. organ of Corti/hair cells. d. scala tympani/perilymph. e. scala vestibuli/perilymph.
Compare presynaptic and postsynaptic cells
A) Presynaptic cells are sensory neurons and postsynaptic cells are motor neurons. B) Presynaptic cells are motor neurons and presynaptic cells are sensory neurons. C) Presynaptic cells are usually neurons and postsynaptic cells can be a neuron or another type of cell, such as skeletal muscle fiber or a gland cell. D) Presynaptic cells can be a neuron or another type of cell, such as a skeletal muscle fiber or a gland cell and postsynaptic cells are usually neurons. E) Presynaptic cells are usually found in the peripheral nervous system and postsynaptic cells are usually found in the central nervous system.
A baseball pitcher was hit on the side of the head by a line drive. When he was revived, he could not remember how many balls and strikes the batter had. This was because
A. short-term memory had not been converted to working memory. B. he lost both working and short-term memory. C. long-term memory had not been converted to working memory. D. he lost long-term memory. E. None of these choices is correct.