1. A. Cell: the smallest biological unit of living things capable of independent existence.
2. D. Ligament: a tough, leathery structure that holds a joint together.
3. E. Tendon: a rope-like structure that attaches muscle to bone.
4. F. Biceps: a muscle in the upper arm that flexes (bends) the arm.
5. C. Phalanges, phalangeal: bones of the fingers and toes.
6. G. Organ: a part of the body made of different kinds of tissue that performs a specific function.
7. H. Triceps: a muscle in the upper arm that extends (straightens) the arm.
8. B. Vein: a blood vessel that carries blood back to the heart.