In two or more complete sentences, explain the responses of vomiting and fever. Be sure to state the stimuli that cause the response, and the purpose of the response. Which of the following is responsible for homeostasis on a cellular level?

pituitary gland
hypothalamus
cell membrane
nucleus

Which of the following statements is true?

The hypothalamus links the nervous system to the endocrine system.
Positive feedback occurs when the output of a system is reduced or stopped.
Negative feedback describes an undesired homeostatic response.
Sweating is an example of positive feedback.