Write in Complete Sentences!!! “Do Now-03/07/18” Explain to me why the Circulatory system is like a train AND what it picks up and transports to appropriate areas in the body. Write in Complete Sentences!!!

Blood Plasma- liquid part of blood Makes up 55% of blood volume -90% water -10% proteins (placed there by the liver)

Plasma

2) Red Blood Cells (erythrocytes) A) takes about 3000 placed side by side to make an inch B) has no nucleus (can’t reproduce itself) C) function is to transport O2 and Co2

Whole Blood

1. Hemoglobin makes up RBC a. 200-300 mill molecules of Hemo in each RBC b. each Hemo has 4 atoms of Fe c. thus each Hemo can carry 4 molecules of oxygen d. Hemo also carries CO2 e. Men contain more Hemo per cell than do women and more RBC than do women

d. RBC’s are produced in the bone marrow of long and flat bones

e. Life span of a RBC is about 120 days 1. membrane ruptures 2. special cells form the liver and spleen clear out the dead cells 3. Fe is reused 4. rest of the cell is excreted in the form of bile

3) White Blood Cells (leucocyte) a. Fight bacteria and viruses that enter the body b. Normal count 1 to 600 WBC to RBC c. Produced two places (bone marrow and Lymph glands) d. Produce antibodies in response to antigens (causes immunity)

4) Platelets (thrombocyte) a. Clotting process 1. adhere to ruptured wall area (change in polarity from – to +) 2. chemical reaction forms fibrins, which help build and make the clot stronger

Platelets

5) Blood Type ( determined by antigens present in the blood) a. 4 types -type A has antigen A which attacks B -type B has antigen B which attacks A -type AB has antigen A and B -type O has not antigens

type A may be given to A or AB type B may be given to B or AB type AB may only be given to AB type O may be given to any (Universal Donor)

Type O may receive only O Type AB may Receive any type (universal recipient)

6) Rh factor (Rh another antigen that may be present) 1. Rh+ antigen is present 2. Rh- no antigen present * about 86% of Americans are Rh+

Blood Types in U.S. THE RAREST BLOOD TYPE IS THE TYPE THAT’S Blood type & Rh How many have it Frequency O Rh Positive 1 Person in 3 37.4% O Rh Negative 1 Person in 15 6.6% A Rh Positive 1 Person in 3 35.7% A Rh Negative 1 Person in 16 6.3% B Rh Positive 1 Person in 12 8.5% B Rh Negative 1 Person in 67 1.5% AB Rh Positive 1 Person in 29 3.4% AB Rh Negative 1 Person in 167 0.6% THE RAREST BLOOD TYPE IS THE TYPE THAT’S NOT AVAILABLE WHEN YOU NEED IT.