1. Circulatory system
Revision Chapter 33

2. Blood vessels
Artery: ______________________________________________________
Arteriole: _____________________________________________________
Capillary: _____________________________________________________ ______________________________________________________
Venule:________________________________________________
Vein: _____________________________________________________

3. Circuits in the Circulatory system
Pulmonary circuit: __________________________________ _________________________________________________
Pulmonary artery: _______________________________________
Pulmonary vein: ________________________________________
Systemic circuit: ____________________________________ _________________________________________________

7. Human heart external view

8. Human heart internal view

9. Cardiac cycle
Cardiac cycle: ______________________________________ _________________________________________________
Diastole: __________phase of the cardiac cycle
Systole: ____________phase of the cardiac cycle
During the cardiac cycle a “lub-dup” sound is produced
“Lub”: ______________are closing
“Dup”: ________________________are closing

11. How does the heart pump rhythmically
Sinoatrial (SA) node: cardiac pacemaker; ______________________________________________________ ______________________________________________________ ______________________________________________________
Atrioventricular (AV) node: ______________________________________________________ ______________________________________________________ ______________________________________________________

12. How does the heart pump rhythmically

13. Blood functions
______________________________________________________

14. Blood consists of…

15. Blood plasma Plasma: _____________________________________
Mostly water with ___________________________
Function of albumins and other plasma proteins:
___________________________________________________

16. Blood cells
Red blood cell (erythrocyte): ________________________________________________________
White blood cell (lymphocyte): ________________________________________________________
Platelet: cell fragment that helps ______________________
Fibrin: threadlike protein formed during blood clotting from the soluble plasma protein _______________

17. Platelets

18. Blood moving through arteries
Blood pumped out of _______________ enters arteries
The ____________of an artery help keep blood flowing, even when the ventricles relax
The bulging of an artery with each ventricular contraction is the _____________
The body adjusts blood flow via the _____________: blood vessels that convey blood from an artery to capillaries
Vasodilation: _________ of a blood vessel; smooth muscle __________
Vasoconstriction: _________ of a blood vessel; smooth muscle _____________

19. Blood moving through veins

20. Blood pressure
Blood pressure: ___________________________________________
Systolic pressure: highest pressure of a cardiac cycle; occurs as ____________ ventricles force blood into the arteries
Diastolic pressure: lowest blood pressure of a cardiac cycle; occurs when ventricles are ________________
Normal blood pressure is about __________ mm Hg (millimeters of mercury)

21. Blood pressure

22. Blood pressure in different blood vessels

23. What happens at capillaries?
Materials move between capillaries:
_______________________________________________________________
_______________________________________________________________ _______________________________________________________________

24. Heart problems Arrhythmias: abnormal heart rhythms
bradycardia: __________________________________________________
tachycardia: __________________________________________________
atrial fibrillation: _______________________________________________
ventricular fibrillation: is a condition in which there is uncoordinated contraction of the cardiac muscle of the ___________in the heart, making them quiver rather than contract properly
Atherosclerosis: ___________________________________________ ________________________________________________________
A heart attack occurs when a coronary artery is completely blocked

25. Coronary bypass

26. Angioplasty