Why do pregnant women often have heartburn?
A) As the uterus enlarges it pushes upward on the stomach, causing gastric reflux.
B) Elevated levels of estrogens cause morning sickness.
C) The mother's body is purging itself of toxins to protect the fetus.
D) There is reduced intestinal motility.
A
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Which of the following features belongs to the occipital bone?
A) mylohyoid line B) hypoglossal canal C) mandibular foramen D) coronoid process E) mental foramen
What hormone is NOT involved in regulating fuel metabolism?
A. Insulin B. Ghrelin C. Cortisol D. Glucagon
The survival needs of the human body include ________.
A. food, water, oxygen, body temperature, and atmospheric pressure. B. food, water, and oxygen. C. food, water, and the appropriate atmosphere containing oxygen and adequate pressure. D. food, water, oxygen, and the appropriate environmental conditions.
How does the brain distinguish high-pitched from low-pitched sounds?
A. High-pitched sounds stimulate hair cells near the tip of the cochlea. B. Low-pitched sounds cause the cochlear nerve fibers to fire more rapidly. C. High-pitched sounds cause the basilar membrane to vibrate more vigorously. D. High-pitched sounds cause the cochlear nerve fibers to fire more rapidly. E. Low-pitched sounds stimulate hair cells near the tip of the cochlea.