chapter 40- circulatory system

blood

plasma + blood cells + platelets

plasma

mostly water, nutrients, wastes, hormones, ions, proteins

plasma has

clotting factors

serum

plasma without coagulation factors

red blood cells

erythrocytes

erythrocytes

disc-shaped - no nucleus, contains hemoglobin (carries O2)

white blood cells

leukocytes

leukocytes

involved in immune system

platelets

cell fragments, involved with clotting (along with proteins)

blood circulation 1)

blood in body loses its O2, giving to surrounding tissues, now deoxygenated

blood circulation 2)

blood enters heart through veins into right atrium

blood enters heart through

artia

blood circulation 3)

blood is pumped from right atrium to righ ventricle

valves ensure

one way movement

blood circulation 4)

blood is pumped through artery to lungs

blood exits heart through

ventricles

blood circulation 5)

at lungs, blood obtains O2, oxygenated

blood circulation 6)

oxygenated blood enters heart from lungs at left atrium

blood circulation 7)

blood is pumped from left atrium to left ventricle

blood circulation 8)

blood is pumped from left ventricle to body

right side

deoxygenated

left side

oxygenated

pulmonary circuit

from heart to and from lungs

systemic circuit

from heart to and from body

coronary circuit

from heart to and from heart

heart muscle must have

veins and arteries

mammals and birds

4 chambers, double circulation

double circulation

blood passes heart 2x in one circuit

(most) reptiles

3 chambered heart, double circulation

3 chambered heart

partial septum, some mixing of oxy + deoxy blood

amphibians

3 chambered heart, double circulation

fish

2 chambered heart, single circulation