The is the part of the brain that works as the “master switchboard” for the endocrine system.

a. hypothalamus
b. pituitary gland
c. pancreas
d. thyroid

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

Complete each statement about nutrition. a good strategy for meeting the nutrient needs of an infant is to . vitamin d during childhood is an important nutrient to .