To survive, the human body needs to maintain __ and does so primarily through the means of self-regulation known as .

a. high energy output; positive feedback

b. adequate fat layers; exocrine secretion

c. bone density; muscle contraction

d. homeostasis; negative feedback

e. nerve signal transmission; hormonal secretion

Adv.

Answer:

Related Questions

The text notes that bone density can increase in response to exercise. Imagine two fairly inactive people who decide to start exercising. One becomes a runner while the other becomes a swimmer. Who experiences the greater increase in bone density: the swimmer (in the arm bones) or the runner (in the leg bones)?

- Voclasses

The four basic types of tissue in the human body are:

a. epithelial, connective, muscle, nervous.

b. epithelial, blood, muscle, nervous.

c. skin, bone, muscle, nervous.

d. skin, connective, heart, nervous.

e. epithelial, bone, connective, muscle.

- Voclasses

Acids secreted by the stomach give the materials within it a pH level that can lie between that of lemon juice and battery acid. Yet our small intestines, which the stomach feeds into, have chemical buffers flowing into them that raise the pH level of the material coming from the stomach. Why should the stomach need such an extreme pH level while the small intestines do not?

- Voclasses

Muscle fibers that are striated and voluntary are found in:

a. cardiac muscle.

b. skeletal muscle.

c. smooth muscle.

d. rough muscle.

e. all four types of muscle.

- Voclasses

Hormones and the glands or cells that secrete them make up the:

a. cardiovascular system.

b. respiratory system.

c. lymphatic system.