Blood

1
Blood
2
Plasma

• Liquid portion of blood
• 55 of total blood volume
• 90 water
• Remainder contains dissolved proteins, glucose,
  clotting factors, mineral ions, and hormones

3
Erythrocytes (RBCs)

• About 45 blood volume
• Biconcave discs that lack a nucleus and
  organelles
• Contain hemoglobin and carry oxygen throughout
  the body
• Erythropoietinhormone that stimulates the bone
  marrow to produce RBCs

4
Anemia

• Means "lack of blood
• Decrease in normal number of RBCs or less than
  the normal quantity of hemoglobin in the blood
• Most cases are due to iron deficiency
• Sickle Cell Anemiagenetic disorder due to a
  hemoglobin mutation, causing the cells to become
  sickle-shaped

5
Leukocytes

• Cells of the immune system that aid in the bodys
  defense against foreign materials and infectious
  disease
• Neutrophilstarget bacteria and fungi
• Eosinophilstarget parasites and present during
  allergic reactions
• Basophilspresent in allergic reactions
• Lymphocytestarget tumor cells, virus-infected
  cells, and other pathogens
• Monocytesmostly become macrophages and engulf
  cellular debris and large pathogens

6
Leukemia

• A cancer of the blood or bone marrow that is
  characterized by an abnormal proliferation
  (production by multiplication) of blood cells,
  usually white blood cells (leukocytes).

7
Platelets

• Less than 1 of total blood volume
• Platelets play a fundamental role in hemostasis
• Are a natural source of growth factors.
• Leading to the formation of blood clots.

8
Blood Types
9
Rhesus (Rh) Factor

• Rh Factor ( or -) presence of an additional D
  antigen on RBCs
• Hemolytic diseaseincompatibility in blood types
  between mother and fetus. The mothers
  antibodies essentially attack the fetuss RBCs