Chapter 42

which of the following structures secretes releasing hormones? a. hypothalamus b. pituitary c. pancreas d. liver

a. hypothalamus the hypothalamus is the endocrine-nervous system integration. it secretes both releasing and inhibiting hormones, which are sent to the pituitary gland. the pituitary secretes a number of hormones sent to other cells. the pancreas secretes hormones to control glucose levels. the liver is not an endocrine gland and is an accessory organ of the digestive system.

explain what happens to the levels of blood glucose and hormones after eating.

after eating food, blood glucose levels rise. the pancreas responds by releasing insulin, which promotes glucose being taken up by cells. this leads to a decrease in blood glucose level because glucose leaves the bloodstream and enters the cell.

which of the following glands releases epinephrine during stress? a. hypothalamus b. adrenal glands c. pancreas d. pituitary gland

b. adrenal glands although the other glands listed release hormones, only the adrenal glands secrete epinephrine

which of the following best describes the kind of message sent in the endocrine system? a. electrical signals between axons b. chemical signals that travel through the bloodstream c. physical sensory signals received through the integumentary system d. audiovisual signals processed through the brain

b. chemical signals that travel through the bloodstream electrical signals are part of the nervous system. physical, audio, and visual signals are received by the nervous system.

which of the following is a function of the pineal gland? a. releasing growth hormone b. releasing melatonin c. releasing insulin and glucagon d. releasing luteinizing hormone

b. releasing melatonin growth hormone is secreted by pituitary gland. insulin and glucagon are secreted by pancreas. luteinizing hormone is released by pituitary gland.