- RBC, WBC, anf platelets account for about 45% total blood volume
- plasma accounts for about 55% of the total volume
- about 99% of the cells in the blood are RBC
functions of the blood - ANS - carries oxygen
- facilitates communication by carrying hormones
- carries waste- out
- protects body from foreign organisms
, - regulates temperature
anemia - ANS a deficiency of hemoglobin or red blood cells in the blood
iron-deficiency anemia - ANS -iron is building block for hemoglobin
- low iron stores causes production of fewer red blood cells and smaller red blood cells
- most common form
- increased central pallor, irregular shape of RBCs
symptoms of anemia - ANS - patients do not always have these
- weakness
- headache
- irritability
- fatigue
- difficulty exercising ( due to shortness or breath, rapid heart beat)
- brittle nails
- tachycardia
- pallor
- pica
tachycardia - ANS increased heart rate to make up for body's demand of more oxygen
pallor - ANS pale skin, especially mouth and eyelids due to decreased blood
pica - ANS craving to eat non- food items: clay, dirt, paper products, starch, paint, ice, soap
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