What are the serous membranes that suspend the stomach and intestines from the abdominal wall called?
A. Muscularis externa
B. Muscularis mucosae
C. Submucosae
D. Mucosae
E. Mesenteries
Answer: E
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In a fetus, the foramen ovale is found
A. in the interatrial septum. B. In the interventricular septum. C. between the right atrium and right ventricle. D. between the left atrium and left ventricle.
The hypothalamo-hypophyseal portal system connects the hypothalamus to the
A. adenohypophysis.
B.
C.
D. neurohypophysis.
The myocardium receives about 5% of circulating blood even though the heart is only 0.5% of total body weight. Which of the statements below is most closely related to this fact?
A. The left coronary artery supplies both ventricles and the left atrium. B. Cardiomyocytes have large mitochondria that make up about 25% of cell volume. C. The myocardium of the left ventricle is strikingly thick because it serves to pump blood to all tissues. D. There are several arterial anastomoses in coronary circulation. E. The coronary arteries carry more blood during ventricular diastole than they do during ventricular systole.
The type of adrenergic receptor found on the smooth muscle cells of blood vessels in the skin is
A. ?2 B. ?1 C. ?2 D. ?1