Across
- 2. Difficulty breathing
- 4. The pacemaker of the heart; where electrical impulses originate
- 5. Abnormally fast heart rate, greater than 100 BPM
- 8. Upper number in blood pressure reading; pressure during heart contraction
- 9. Lower chambers of the heart that pump blood out
- 12. Abnormally slow heart rate, less than 60 BPM
- 13. Blood pressure reading 120-129/80 would be in this category
- 14. Amount of blood pumped by the heart with each beat; difference between end-diastolic and end-systolic volume
- 15. Blood vessels that carry oxygenated blood away from the heart
Down
- 1. Shortness of breath or labored breathing
- 3. Volume of blood pumped by the heart per minute; calculated as HR × S
- 6. Tiny blood vessels where gas exchange occurs between blood and tissues
- 7. Dangerous breathing technique where you hold your breath while contracting abdominals during exercise
- 10. Primary muscle of inspiration; contracts and moves downward to create negative pressure
- 11. where oxygenated blood enters the heart first