Happy Valentine’s Day

Give me one good reason we shouldn’t talk about…

BLOOD

Give life…Donate blood

We donate blood…

Some of us willingly

and others unwillingly.

But either way it looks

like this and it doesn’t

really hurt.

• And after they are finished they have another unit of blood that someone will desperately need due to surgery, an accident, or even childbirth.

FACT

46.5 gallons: amount of blood you could donate if you begin at age

17 and donate every 56 days until you reach 79 years old.

Rarest Blood Type?

• The rarest blood type is the one not on the shelf when it’s needed by a patient.

• If you are really curious it is type AB-.

Blood Facts

Blood temp = 38 degrees C (100.4 F)

Slightly Alkaline = 7.35 - 7.45 pH

Your total blood volumeFemales =Males =

Medical Terminology

Cardiovascular systemcardio--vascular

Hematologyhemato- / hemo-

Blood Functions

Transportgases, nutrients, wastes, hormones

RegulatepH, body temp.

Protectclots, WBCs, proteins

Blood Component Overview

PlasmaRed Blood CellsWhite Blood CellsPlatelets

Plasma

“Liquid” portion of blood 90% Water by volume

Plasma Proteins Albumins- maintain osmotic pressure Globulins- defense proteins (i.e. antibodies)

Fibrinogen- blood clotting

Dissolved substances Metabolites, Gases, Enzymes, Hormones, Wastes

Plasma

FACT

Blood or plasma that comes from people who have been paid cannot be used in human

transfusion.

“Erythrocytes” or RBCs

Produced in red bone marrow (locations?)

Biconcave shape (>surface area : volume)

Lack nucleiPacked with cytosol and hemoglobinOxygen & Carbon dioxide carrierLife span = 120 days

Illegal method of training…

Blood DopingDraw blood --> Train --> Draw blood…

Physiological response?Prior to competition…

FACT

Anemic patients often need blood transfusions to increase their red

blood cell levels.

“Leukocytes” or WBCs

Produced in bone marrow for Defense

Granular (contain cytoplasmic vesicles)

Agranular (B cells, T cells, killer cells)

Phagocytosis (bacteria & viruses) Life span = a few days

Human White Blood Cell

White Blood Cells

FACT

Granulocytes, a type of white blood cell, roll along blood vessel

walls in search of bacteria to engulf and destroy.

Platelets

“Bits” of cytoplasmLack nucleiCoagulation or clotting functionClot small vessels = platelets + fibrin threads

Life span = 5 - 9 daysHeparin, Coumadin, Aspirin (inhibit clotting)

FACT

Cancer, transplant and trauma patients, and patients undergoing

open-heart surgery most often require platelet transfusions.

ABO Blood Group System

Offspring receives two allelesFour general blood types =Antigens: Type ___ has ___ antigens

Antibodies: Type ___ has ___ antibodies

Rh factor =

FACT

• Blood centers often run short of types O and B red blood cells.

• Think critically… 2 key reasons.

Links to more video footageBlood Circulation in Veinshttp://www.fotosearch.com/crt778/001203cf/

Platelet Circulationhttp://www.fotosearch.com/ung140/u17433116/

Blood Component Review(fill in boxes with at least 2 pieces of information)

Plasma Red Blood Cells

White Blood Cells

Platelets