Which structure connects the yolk sac to the embryonic midgut?
A. Vitelline duct
B. Gastric duct
C. Hepatopancreatic ampulla
D. Liver bud
E. Foregut dilation
Answer: A
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When blood volume becomes abnormally low all of the following occur except:
a. sodium reabsorption is increased b. concentrated urine is formed c. renin release is increased d. aldosterone is secreted by the kidney. e. vasopressin levels rise
A woman with Rh- blood does not have anti-Rh antibodies in her blood unless ________.
A. she has had a previous blood transfusion B. Rh+ erythrocytes have previously been introduced into her blood C. her husband is Rh+ D. she has had an Rh+ child
Damage to the hair cells of the spiral organ (organ of Corti) can result in a loss of:
A) equilibrium. B) vision. C) olfaction. D) hearing.
Which of these functions is not associated with the reticular formation?
A. Cardiovascular control B. Habituation C. Pain modulation D. Sleep E. Hunger