Science: Chapter 19 Vocabulary

atrium
Click the card to flip 👆
1 / 15
Terms in this set (15)
atrium
two upper chambers of the heart that contract at the same time during a heartbeat
ventricle
Two lower chambers of the heart that contract at the same time during a heartbeat
coronary circulation
flow of blood to and from the tissues of the heart
pulmonary circulation
Flow of blood through the heart to the lungs and back to the heart
systemic circulation
largest part of the circulatory system, in which oxygen-rich blood flows to all the organs and body tissues, except the heart and lungs, and oxygen-poor blood is returned to the heart
artery
blood vessel that carries blood away from the heart, and has thick, elastic walls made of connective tissue and smooth muscle tissue
vein
A blood vessel that carries blood back to the heart, and has one-way valves that keep blood moving towards the heart
capillary
microscopic blood vessel that connects arteries and veins; has walls one cell thick, through which nutrients and oxygen diffuse into body cells, and waste materials and carbon dioxide diffuse out of body cells
plasma
Liquid part of blood, made mostly of water, in which oxygen, nutrients, and minerals are dissolved
hemoglobin
chemical in red blood cells that carries oxygen from the lungs to body cells, and carries some carbon dioxide from body cells back to the lungs
plateletIrregularly shaped cell fragment that helps clot blood and releases chemicals that help form fibrinlymphtissue fluid that has diffused into lymphatic capillarieslymphatic systemcarries lymph through a network of lymph capillaries and vessels, and drains it into large veins near the heart; helps fight infections and diseaseslymphocytea type of white blood cell that fights infectionlymph nodebean-shaped organs found throughout the body that filter out microorganisms and foreign materials taken up by the lymphocytes