The cells that produce testosterone in the testis are called ________
A) spermatogonia
B) sustentacular cells
C) interstitial endocrine cells
D) spermatocytes
C
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The ____________________ layer of the pleura is in direct contact with the ribs.
Fill in the blank(s) with the appropriate word(s).
Which of the following routes of blood flow is correct?
A. Heart > venule > medium vein > large vein > capillary > conducting artery > distributing artery > arteriole > heart B. Heart > large vein > medium vein > venule > capillary > arteriole > distributing artery > conducting artery > heart C. Heart > distributing artery > conducting artery > arteriole > capillary > venule > large vein > medium vein > heart D. Heart > conducting artery > distributing artery > arteriole > capillary > venule > medium vein > large vein > heart
Regarding the sympathetic nervous system, the neurotransmitter ACh is
A) always excitatory when used in the synapses of the sympathetic nervous system. B) broken down by COMT. C) going to reduce the activity of the other neurotransmitter norepinephrine. D) broken down by monoamine oxidase. E) a chemical similar to the structure of adrenaline.
A diagnostic test using an instrument to peel cells from the conjunctiva is a conjunctival __________
Fill in the blank(s) with correct word