In response to stimulation by αMSH and cocaine-and-amphetamine-regulated transcript (CART), the pituitary gland releases _____.

A muscle relaxes after contracting when _____.

Each human eye contains around _____.

Aldosterone signals the kidneys to _____.

CART might influence the rewarding aspects of eating through its action on the _____.

C ells that respond most vigorously to a stimulus that falls within their receptive field but not beyond are called _____,

A motor unit is made up of one alpha neuron and all of the muscle fibers that it innervates.

Eye color is primarily the result of _____.

A guidepost cell is one that _____.

Although dietary restrictions are essential for children with phenylketonuria (PKU), adults with PKU need not restrict their consumption of phenylalanine.