Chapter 34 Flashcards Preview

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Flashcards in Chapter 34 Deck (21):
1

single circulation

blood leaves heart passes through 2 capillary beds

2

double circulation

o poor blood slows through pulmonary circuit picks up oxygen from lungs

o rich blood delivers o from the systemic circuit

3

cardiac cycle

one complete cycle of pumping and calling

4

AV valves

separate each atrium and ventricle

5

semilunar valves

tcontrol blood flow to the aorta and the pulmonary artery

6

systole

contraction phase of cycle

7

diastole

relaxation phase of the cycle

8

lymphatic system

returns fluid that leaks out from the capillary beds

9

lymph nodes

organs that filter lymph and play important role in body defense

10

platelets

involved in flotation

11

Red blood cells

transport o2 with hemoglobin

12

white blood cells

function in immune defense

13

heart attack

death of cardiac muscular tissue
resulting from blockage of coronary artery

14

stroke

death of nervous tissue in brain

15

atherosclerosis

caused by buildup of fatty deposits within arteries

16

gas exchange

uptake of o2 and discharge of co2 from/to the environment

17

countercurrent exchange system

used by fish
blood flows opposite direction to water passing over gills

18

tracheal system

consists of a network of air tubes that branch throughout the body

19

lungs

infolding of the body surface usually divided into numerous pockets

20

pharynx

directs air to lungs

21

how air passes

pharynx larynx trachea bronchi bronchioles to the alveoli