15.Which is the main purpose of the digestive system? A. to add oxygen to food particles
B. to fill the stomach with food particles
C. to turn food into nutrients the body needs
D. to transfer food from one organ to another organ

Three of the statements below are true one is false. select the statement that is false. a. a decrease in glucose levels levels triggers an increase in secretion of glucagon by the pancreas. b. high cortisol levels generally cause a decrease in gnrh secretion by the hypothalamus. c. high estrogen levels in the blood will tend to decrease secretion of lh and fsh by the anterior pituitary. d. high igf-1 levels in the blood will tend to decrease growth hormone secretion by the anterior pituitary.

Subjective observations are not used under diagnosis, but objective observations are. true or false

Which is a physical sign of stress? a: unexplained euphoria b: feelings of invincibility c: inability to sleep d: visual hallucinations