The arrangement of ________ and ________ contributes to the flexibility of the plasma membrane.
A. protein; carbohydrate
B. cholesterol; phospholipids
C. cholesterol; protein
D. phospholipids; protein
Answer: B
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When a person rises quickly from a sitting position, all of the following reactions will occur except
A) the carotid baroreceptors become less active. B) venous return is decreased. C) reflex vasoconstriction of peripheral blood vessels occurs. D) heart rate is reflexively elevated. E) cardiac output will decrease.
Which structure in the diagram allows for passage of nerves and blood vessels?
a) B b) C c) D d) E e) F
Cow tails can cause injury to people
Indicate whether the statement is true or false
Hyperventilation produces which of these effects?
A) decreased blood PCO2 B) vasodilation of peripheral blood vessels C) decreased blood pressure D) increase in pH E) all of these