Human Growth Hormone (HGH) promotes growth of bone, muscle, and other cells in the body. This model shows
how the endocrine and circulatory systems work together to control growth. The pituitary gland is an endocrine
gland that is associated with the brain.
D
Pituitary
gland
Blood
vessels
Black arrows show the
movement of HGH
Bone and
muscle
Describe the roles of the pituitary gland and blood vessels in coordinating growth in an organism. Enter your a
n the box provided.