Plasma - Liquid Portion

Erythrocytes (redblood cells)

leukocytes (white)

platelets - clotting

90% water

8% plasma proteins

1% inorganic ions ex. Na+ Cl-

1% nutrients & waste & hormones

Red Blood Cells have no nucleus & no organelles

True or False

TRUE

contains so much HEMOGLOBIN

just a sac of hemoglobin

contains glycolytic enzymes for energy production

carbonic anhydrase converts CO2 to bicarbonate for transport back to lungs

Diffusion of O2

life span of 4 months

4 globulin chains (protein)

4 iron containing heme group; each heme binds 1 oxygen atom

carrys CO2, H+ ions, CO

Prostacyclin inhibits platelet aggregation

when damage occurs, prostacyclin production stops, platelets attach to collagen exposed by damage

platelet actin & myosin strengthen aggregate

vasconstrictors, fibrinogen

Flow rate is Cardiac output

ΔP/R

change in pressure over resistance

 ΔP = blood pressure = difference between beginning and end of blood vessel

R = resistance

smaller vessel, greater resistance

doubling radius increases flow rate 16 fold

Barorecptor Reflex:

AORTIC ARCH & CAROTID SINUS

USUAL reflex ARCH

Baroreceptors constantly fire action potentials, when blood pressure goes up AP frequency increases

blood pressure down, decreases

EXERCISE

EMOTIONS & BEHAVIORS (FIGHT OR FLIGHT)

HYPOTHALAMIC CONTROL

mean arterial pressure = 

(systolic pressure + [2Diasotlic Pressure])

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