As Lisa drove home, she was suddenly alerted to the sound of a blaring horn and realized she had drifted off to sleep. Which nervous system division dominated when she was startled awake?
A) parasympathetic nervous system
B) sympathetic nervous system
C) sensory nervous system
D) somatic nervous system
Answer: B) sympathetic nervous system
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Which structure will produce progesterone, estrogens, relaxin and inhibin?
a) D b) E c) G d) I e) None of these choices
Estrogen exerts a ________ influence on the hypothalamus, increasing secretion of ________ and thus increasing LH and FSH secretion.
A. negative; GnRH B. positive; progesterone C. negative; progesterone D. positive; GnRH
How can phospholipids form a film when mixed in water?
What will be an ideal response?
What is the ratio of organic compounds to inorganic components in the composition of bone?
A) Organic compounds make up 25%; inorganic components make up 75%. B) Organic compounds make up 75%; inorganic components make up 25%. C) Organic compounds make up 33%; inorganic components make up 67%. D) Organic compounds make up 67%; inorganic components make up 33%. E) Organic compounds make up 18%; inorganic components make up 82%.