Which blood vessel drains deoxygenated blood from the portion of the body below the chest?
A. Subclavian vein
B. Superior vena cava
C. Inferior vena cavae
D. Aorta
Answer: C
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During meiosis, crossing-over results in the exchange of homologous genes from one of a pair of chromatids to the other with no net change in possibilities for genetic expression.
Answer the following statement true (T) or false (F)
The decidua basalis of the endometrium and the chorionic villi of the fetus grow together to form the
A. placenta. B. ectoderm. C. blastocyst. D. amnion. E. morula.
Skin color is the result of the
A. quantity of melanin in the skin. B. number of melanocytes in the skin. C. amount of adipose in the subcutaneous layer. D. number of keratinocytes in the skin. E. thickness of the stratum basale.
Agammaglobinemia will seriously impair which ability?
A) CMI B) T cell functions C) antibody production D) phagocytosis