All of the following are true of swallowing (deglutition) except one. select the statement that is not true of swallowing.
a. the epiglottis assists in propelling food into the trachea.
b. the involuntary portion of swallowing takes place in the pharynx.
c. the mouth, pharynx and esophagus all take part in swallowing.
d. the voluntary phase of swallowing takes place within the mouth.

Which describes radioactive decay of a substance

Environmental impacts on evolution : mastery test

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.