What is true of the structure of the human placenta?
A) It is diffuse, with villi distributed over the surface of the chorion.
B) It forms a belt around the embryo.
C) It is disc-shaped.
Answer: C
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Postganglionic fibers that innervate targets in the body wall or thoracic cavity originate on neurons within
A) intramural ganglia. B) collateral ganglia. C) sympathetic chain ganglia. D) suprarenal ganglia. E) white rami communicantes.
The function of ________ is to propagate electrical signals from one place to another
A) muscle cells B) neurons C) transmitter cells D) teleocytes E) neuroglia
When blood starts to become more alkaline than normal, the renal tubules begin to
A. secrete bicarbonate and H+ through type B cells. B. secrete bicarbonate while reabsorbing H+ in exchange through type B cells. C. secrete H+ while reabsorbing bicarbonate in exchange through type A cells. D. absorb bicarbonate and H+ through type A cells.
The superior orbital fissure is formed in the sphenoid bone, whereas the inferior orbital fissure is formed between the sphenoid and ________
A) maxilla B) lacrimal C) palatine D) ethmoid