Week 1 Vocab

5. The smallest blood vessels where exchange of oxygen, carbon dioxide, and nutrients occurs between blood and tissues.
9. One of the two lower chambers of the heart that pumps blood out (right to lungs, left to body).
10. The delivery of oxygen-rich blood to body tissues and organs.
12. The muscular layer of the heart wall responsible for contracting and pumping blood.
13. A test that measures the electrical activity of the heart to detect heart problems.
15. A blood vessel that carries blood toward the heart (usually oxygen-poor).
16. (Electrocardiogram)Same as #1 — a recording of the heart’s electrical activity.
18. A specific view or angle of the heart's electrical activity recorded by electrodes during an ECG.
19. A blood vessel that carries blood away from the heart (usually oxygen-rich).
20. Cycle The complete sequence of one heartbeat, including both systole (contraction) and diastole (relaxation).

1. The phase of the heartbeat when the heart muscles contract and pump blood out.
2. Rate The number of times the heart beats per minute (bpm).
3. The phase of the heartbeat when the heart muscles relax and the chambers fill with blood.
4. One of the two upper chambers of the heart that receives blood (right from the body, left from the lungs).
6. The rhythmic throbbing of arteries as blood is pumped through them, felt at various points on the body.
7. Related to the heart and blood vessels; the system that circulates blood throughout the body.
8. Pressure The force of blood pushing against the walls of the arteries; measured in two numbers: systolic over diastolic.
11. A cluster of specialized heart cells that generate or transmit electrical impulses (e.g., SA node, AV node).
14. The process of transmitting electrical signals through the heart to control heartbeat.
17. The largest artery in the body; carries oxygen-rich blood from the left ventricle to the body.