As the result of an asthmatic attack,
A. ventilation exceeds the ability of blood to pick up oxygen.
B. ventilation is inadequate to oxygenate blood.
C. pulmonary blood flow is reduced while ventilation remains normal.
D. the surface area available for gas exchange increases.
E. bronchioles dilate.
B
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Thick skin contains
A. seven epidermal strata and lacks sweat glands. B. five epidermal strata and lacks sweat glands. C. four epidermal strata and lacks sebaceous glands. D. six epidermal strata and lacks sweat glands. E. five epidermal strata and lacks sebaceous glands.
Progesterone is produced by the:
A) corpus luteum B) hypothalamus C) seminiferous tubules D) pituitary gland E) oviduct
A male has ________ chromosomes, while a female has ________ chromosomes.
A. XY; XX B. XX; XY