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Ch37 Vocab
chapter 37 vocabulary biology
| Question | Answer |
|---|---|
| myocardium | thick middle muscle layer of the heart |
| atrium | upper chamber of the heart that receives and holds blood that is about to enter the ventricle |
| ventricle | lower chamber of the heart that pumps blood out of the heart |
| pulmonary circulation | pathway of circulation between the heart and the lungs |
| systemic circulation | pathway of circulation between the heart and the rest of the body except the lungs |
| valve | flap of connective tissue between an atrium and a ventricle, or in a vein, that prevents back flow of blood |
| pacemaker | small group of cardiac muscle cells in the right atrium that "sets the pace" for the heart as a whole |
| aorta | large blood vessel in mammals through which blood travels after it leaves the left ventricle |
| artery | large blood vessel that carries from the heart to the tissues of the body |
| capillary | smallest blood vessel |
| vein | a blood vessel that returns blood to the heart |
| atherosclerosis | condition in which fatty deposits called plaque build up on the inner walls of the arteries |
| plasma | straw-colored fluid that makes up about 55% of blood |
| hemoglobin | iron-containing protein in red blood cells that transports oxygen from the lungs to the tissue of the body |
| lymphocyte | type of white blood cell that produces antibodies that help destroy pathogens |
| platelet | cell fragment released by bone marrow that helps in blood clotting |
| lymph | fluid lost by the blood into surrounding tissue |
| pharynx | muscular tube at the end of the throat that connects the mouth to the rest of the digestive track and serves as a passageway for air and food |
| trachea | windpipe; tube through which air moves |
| larynx | structure in the throat containing the vocal cords |
| bronchus | passageway leading from the trachea to a lung |
| alveolus | tiny air sac at the end of a bronchiole in the lungs that provides surface area for gas exchange to occur |
| diaphragm | large, flat muscle at the bottom of the chest cavity that helps with breath |
| nicotine | stimulant drug in tobacco that increases heart rate and blood pressure |
| emphysema | disease in which the tissues of the lungs lose elasticity, making breathing very difficult |
Created by:
nick20ellis
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