1. Blood

2. Overview… Blah… What it is Structures & Functions Parts of blood
Red blood cells
White blood cells
Plasma
Platelets
Lymph
Blood Type and Rh Factor
Blood Extras…
Blood Donation
Infection
Blood-doping

3. Blood – What it is?... Specialized fluid in the body.
Delivers necessary substances.
Nutrients
Oxygen
Removes waste products from cells.
Carbon dioxide
Cell waste

4. Parts of the Blood

5. Structures & Functions of Blood
Red Blood Cells
White Blood Cells
Platelets
Plasma
Function
Gas Transport
Immune response
Clotting
Nutrient & waste transport

6. Red Blood Cells A.k.a. Erthrocytes (“red” & “cell”)
Deliver oxygen & remove carbon dioxide and other waste.
Red because it contains hemoglobin which binds oxygen. Bluer when oxygen-poor.
Made in bone marrow in humans.
Live for 120 days
No organelles or nucleus
Single drop = millions of cells

7. White Blood Cells

8. White Blood Cells A.k.a. leukocytes (“white” & “cell”)
Cells of the immune system
Defend the body against infectious disease and foreign materials.
Indicator of disease – 1% of blood in healthy adult. Greater # may mean infection.
Produced in the bone marrow.
Live a few days to a few weeks.

9. Platelets

10. Platelets A.k.a. Thrombocytes
Responsible for clotting of the blood when exposed to air.
Small, colorless, irregular shape, sticky surfaces.
Life span of 8-12 days
Excessive bleeding can occur if their numbers are too low.

12. Plasma Responsible for transport of cells. Like the stream to fish.
Carries dissolved salts (Ca, Na, Mg, K)
Transports blood, glucose, carbon dioxide.
~55% of blood. Straw-colored, clear liquid. Mostly (~90%) water.
Serum is plasma without clotting proteins.

13. Blood Types & Rh Factor

14. Blood Types & Rh Factor
A, B, AB, O refer to the presence or absence of antigens in the blood.
O is most common (neither antigen).
Blood types are inherited.
Rh refers to the Rhesus Monkey – an antigen (D) is present in some people (which is common to Rhesus) = +.
85% are + (99% Asians are +)
15% are -.

15. RBC Compatibility
Recipient[1]
Donor[1] O− O+ A− A+ B− B+
AB−
AB+
   

16. Conditions
Anemia – a symptom in which there are reduced RBC’s. Other symptoms are pale skin, feel weak, fast heart beat.
Leukemia – cancer affecting bone marrow and immunity.
Sickle-cell – anemia resulting genetically. RBC’s are sickle shaped.