| A | B |
| abductors | muscles that draw a body part, such as a finger , arm or toe, AWAY from the midline of the body or of an extremity. in the hand abductors separate the fingers |
| absorption | to trasport fully digested food into the circulatory system to feed the cells and tissues |
| adductors | muscles that draw a body part, such as a figer arm, or toe, INWARD toward the median axis of the body or an extremidity in the hand adductors draw the fingers together |
| adipose tissue | a specialized connective tissue considered fat, which gives smoothness and contour to the body and cushions and insulates the body |
| adrenal glands | glands that secrete about 30 steroid hormones and control matabolic processes of the body including the fight-or-flight response |
| anabolism | constructive metabolism; the process of building up larger molecules from smaller ones |
| anatomy | the study of the human body structure that can be seen with the naked eye and how the body parts are organized and the science of the structure of organisms or of their parts |
| angular artery | artery that supplies blood to the side of the nose |
| anterior auricular artery | artery that suppies blood to the front part of the ear |
| aorta | the body's largest artery. the arterial trunk that carries blood from the heart to be distributed by branch arteries through the body |
| arteries | think-walled muscular and flexible tubes that carry oxygenated blood from the heart to the capillaries thoughout the body |
| arterioles | small arteries that deliver blood to capillaries |
| atrioventricular valves (ATV) | valves which are designed to prevent the blood from flowing back into the pumping chamber |
| atrium | thin-walle, uper chamber of the heart through which blood is pumped to the ventricles there is a right and left atrium |
| auricularis anterior | muscule in front of the ear that draws the ear forward |
| auricularis posterior | muscule behind in the ear that draws the ear backward |
| auricularis superior | muscule above the ear that draws the ear upward |