Circulation and Respiration
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Created by:
mallorydean on May 29, 2012
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42 terms
Terms | Definitions |
|---|---|
 Cardiovascular system | consists of the heart, blood vessels and blood |
| Heart | A hollow muscular organ that pumps blood throughout the body. |
| Atrium | receives blood that comes into the heart |
| Pacemaker | Sends out signals that make the heart muscle contract (beat) |
| Ventricle | Pumps blood out of the heart. |
| Valve | A flap of tissue that prevents blood from flowing backward. |
| Arteries | Blood vessels that carry blood away from the heart. |
| Capillaries | Tiny, narrow vessels that blood flows into after passing through the arteries |
| aorta | The largest artery in the body |
| Coronary arteries | An artery that supplies blood to the heart itself |
| Pulse | Alternating expansion and relaxation of an artery wall |
| Diffusion | The process by which molecules move from an area of higher concentration to lower concentration. |
| Pressure | Is force per unit area |
| Blood pressure | The pressure that is exerted by the blood against the walls of blood vessels |
| Plasma | The liquid part of blood |
| Red blood cells | Take up oxygen in the lungs and deliver it to cells elsewhere in the body. |
| Hemoglobin | An iron-containing protein that binds chemically to oxygen molecules |
| White blood cells | The body's disease fighters |
| Platelets | Cell fragments that play an important role in forming blood clots. |
| Shock | Failure of the circulatory system to provide an adequate supply of oxygen-rich blood to all parts of the body. |
| Lymphatic system | a network of veinlike vessels that returns the fluid to the bloodstream |
| Lymph | The fluid that is inside the lymphatic system |
| Lymph nodes | Filter lymph, trapping bacteria and other disease-causing microorganisms in the fluid. |
| Respiration | the process by which oxygen and glucose undergo a complex series of chemical reactions inside cells. |
| Mucus | a thick sticky liquid that moistens the air and keeps the lining from drying out. ` |
| Cilia | tiny hairlike extensions that move together in a sweeping motion. |
| Pharynx | the throat |
| Trachea | Windpipe |
| Bronchi | The passages that direct air into the lungs |
| Lungs | The main organ of the respiratory system |
| Alveoli | Ting sacs of lung tissue specialized for the movement of gasses between air and blood |
| Diaphragm | A large dome shaped muscle that plays an important role in breathing |
| Larynx | Voicebox, located in the top part of the trachea underneath the epiglottis |
| Vocal Cords | Folds of connective tissue that produce your voice, stretch across the opening of the larynx |
| atherosclerosis | A condition in which an artery wall thickens as a result of buildup of fatty materials |
| Heart attack | Occurs when part of the heart muscle is blocked |
| Hypertension | A disorder when your blood pressure is consistently high |
| Stroke | Death of brain tissue that can result when a blood vessel in the brain is either blocked by a clot or bursts. |
| Emphysema | A serious disease that destroys lung tissue and causes breathing difficulties |
| Bronchitis | An irritation if the breathing passages in the small passages become narrower and may be clogged with mucus. |
| asthma | Disease when Airways in the lungs narrow significantly |
| pneumonia | Infection that causes fluid to collect in the alveoli. Causes difficulty taking in oxygen and getting CO2 out. |
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