The main function of the _____ muscle is extension of the arm at the elbow.

Antibodies combine with specific antigens to:

What is composed of three layers, and protects the brain and spinal cord?

Parathyroid hormone increases _____ in the blood.

The hormone(s) _____ is/are released from the thyroid to increase metabolism.

The _____ nervous system is also called the “Fight or Flight” system.

An action potential has not yet been activated, and a nerve cell is in its resting state.  The nerve cell is:

Which of the following is incorrect about insulin?

The _____ nervous system is composed of the brain and spinal cord.

Which organelle is composed of a double layer of phopholipids?