The sequence of veins draining most of the blood from either side of the brain is ________.
A. external jugular vein ? common jugular vein ? superior vena cava ? right atrium
B. internal jugular vein ? superior vena cava ? right atrium
C. external jugular vein ? brachiocephalic vein ? superior vena cava ? right atrium
D. internal jugular vein ? brachiocephalic vein ? superior vena cava ? right atrium
Answer: D
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Select the correct statement about the regulation of gastric secretion
A) Gastric secretion can be stimulated before food has entered the mouth. B) The presence of food in the stomach prevents hormonal control of gastric secretion. C) Vagus stimulation of the stomach results in decreased secretion of gastric juice. D) Gastric secretion is enhanced by very low pH (below a pH of 2).
A blastomere is a _____ and a blastocyst is _____
A) hollow ball of cells; a cell resulting from cleavage B) fetal organ produced by cleavage; an embryonic organ produced by cleavage C) cell produced by cleavage; a hollow ball of cells D) fetal membrane; an embryonic membrane
All of the following describe an anatomical term of direction except which one?
A. Right B. Bilateral C. Medial D. Cubital
The extrapyramidal system
A. controls the speed of skilled movements. B. projects sensory information from the medulla to the cerebrum. C. interprets cutaneous perception. D. control facial expression, mastication, and tongue movements. E. maintains control of unconscious movements.