The force produced by a muscle can be increased by

The knee is _____ to the ankle.

What is the role of calcitriol in calcium homeostasis?

A cut that divides the body into anterior and posterior sections is along the:

Identify the part of the bone labeled 1   

Number 3 is due to

The epidermis is primarily composed of which type of tissue?

The sodium–potassium pump moves:

The liver is __________ to the diaphragm.

If the sarcomere length is too stretched, contraction strength decreases because