Human Physiology - The Blood System Flashcards Preview

IB Biology 20 > Human Physiology - The Blood System > Flashcards

Flashcards in Human Physiology - The Blood System Deck (56)
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1

What are albumins?

protein soluble in water that transports molecules such as bilirubin, Ca and Mg

2

What is anemia?

not enough red blood cells or hemoglobin

3

What is the aorta?

main artery of the body; comes directly from the left atrium; carries oxygenated blood

4

What is an artery?

a type of vessel with a thick tunica media / muscle layer that assists in moving blood

5

What is the AV node?

nervous tissue located between the atria and the ventricles of the heart, conducts the eletrial impulse from the atria to the ventricles

6

What is the bicuspid valve?

mitral valve; allows blood to flow from the left atrium into the left ventricle

7

What is blood pressure?

pressure the blood in the circulatory system; systolic pressure (when heart is contracting) and diastolic (when heart is relaxed)

8

What is bradycardia?

slow heart beat

9

What is coagulation?

blood clotting; blood turning from liquid to gel

10

What is diastole?

when heart is relaxed

11

What are erythrocytes?

red blood cells

12

What is fibrinogen?

protein present in blood plasma, produces fibrin when reacts with thrombin

13

What is heart rate?

heart beats per minute

14

What is hemoglobin?

protein that carries oxygen or CO2through the blood

15

What is hypertension?

high blood pressure

16

What is the left atrium?

top right quadrant of the heart, pumps blood into left ventricle

17

What is the left ventricle?

bottom right quadrant of the heart, pumps blood to body; larger than right ventricle

18

What are leukocytes?

white blood cells; responsible for fighting infection

19

What is the mitral valve?

AV valve

20

What is the myocardial infarction?

heart attack when blood flow is cut off from the heart causing tissue damage, usually blockage in the coronary artery

21

What is a pacemaker?

device placed in the chest to control abnormal heart rhythm

22

What are platelets?

disk shaped cell fragments involved in blood clotting

23

What is the pulmonary artery?

artery carrying blood from the right ventricle to the lungs for oxygenation

24

What is pulmonary circulation?

circulation of blood to and from the lungs

25

What is the pulmonary valve?

valve in between right ventricle and pulmonary artery

26

What is the pulmonary vein?

vein bringing oxygenated blood from the lungs back to the left atrium

27

What are the purkinje fibres?

nervous fibres located in the av bundle; send nerve impulse to cells in the ventricles to cause them to contract

28

What is the right atrium?

top left quadrant of the heart, sends blood to the right ventricle

29

What is the right ventricle?

bottom left quadrant of the heart; sends blood to the lungs for oxygenation

30

What is the SA node?

nervous fibres on the upper wall of the right atrium