With respect to hormonal control and secretion, theca cells in the ovary are analogous to Leydig cells in the testis
Indicate whether the statement is true or false.
TRUE
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EPSPs (excitatory postsynaptic potentials) occur when
A) more potassium ions than usual leak out of a cell. B) more calcium ions than usual leak out of a cell. C) chloride ions enter a cell. D) extra sodium ions enter a cell. E) hyperpolarizations occur.
Which feature is found in both cartilage and bone?
A. Osteocyte B. Perichondrium C. Chondrocyte D. Lacuna E. Central canal
Acetylcholinesterase
a. has enhanced activity from organophosphates. b. inactivates a neurotransmitter. c. is a neurotransmitter. d. stimulates an excitatory postsynaptic potential. e. triggers the release of sodium into postsynaptic cells.
Which of the following is true regarding the levator scapulae?
A. It is innervated by the phrenic nerve. B. It flexes the neck if the scapula is fixed. C. It rotates the scapula and depresses the apex of the shoulder. D. It elevates the scapula if the scapula is fixed. E. It protracts the scapula if the humerus is fixed.