X A&P - Chp 13 - The Blood Flashcards
What does blood do?
- Brings nutrients and oxygen to cells
- Carry away waste
Transportation, regulation, protection
What kind of tissue is blood? 2 types of circulating tissue.
- Circulating tissue
- Blood, plasma
Ways blood TRANSPORTS
- GASES, O to lungs and thru body
- NUTRIENTS, water, vits, electrolytes to cells
- WASTE, transports waste to kidney to be removed
- HORMONES, carries hormones to areas of body
Ways blood REGULATES
- pH
- FLUID BALANCE, amount of fluid in tissues
- HEAT, heat generated in muscles to other parts of body
Ways blood PROTECTS
- DISEASE, carries cells and substances to fight infections
- BLOOD LOSS, clotting
pH range of blood
7.35-7.45
Two parts of Blood
- Plasma
- Formed Elements
Blood constituents
- Erythrocytes (RBC)
- Leukocytes (WBC)
- Platelets
Formed elements produced where?
Red Bone Marrow
which cells can potentially develop into any blood cell type
Hematopoietic Stem Cells
blood forming
Mature Erythrocytes
have no nucleus. dissolves to make more room to carry O.
O is bound to what part of RBC?
hemoglobin, protein containing Fe (Iron)
Functions of Hemoglobin
1) carry Oxygen (MAIN FUNCTION)
2) carry H when O given up (role in acid/base balance)
3) carry CO2 from lungs to tissue for disposal
Most numerous Blood Cells
Erythrocytes (RBC)
Red cell production stimulated by what hormone?
EPO, Erythropoietin, released by kidney in response to decreased O.
Constant RBC production requires
1) protein,
2) vit B12, Folic Acid (production of DNA)
3) Iron, Copper (prod of hemoglobin)
4) Vit C (absorbtion of Fe into small intestines)
Hemoglobin is a
protein
Stercobilin
brown fecal pigment that leaves body after Liver and Spleen break down dead RBC .
Leukocytes identified by
size, shape of nucleus, apperance of cytoplasm (granular or agranular)
Granulocytes
- Neutrophils (most) (aka polymorphs)
- Eosinophils
- Basophils
Agranulocytes
- Lymphocytes (second highest to neutrophils)
- Monocytes
Band Cells
young neutrophils before nucleus’ become segmented
incresaed numbers of what Granulocytes indicate infection
Neturophiols
increased numbers of what granulocytes indicate allergic reaction
- Eosinophils
- Basophils
Titers
of antibodies in blood
Titers
of antibodies in blood
Titers
of antibodies in blood
Titers
of antibodies in blood
Blood platelets (thrombocytes
Fig 13.5
What kind of tissue is blood
Liquid connective tissue, 8% of body weight