Blood

• Blood

  • considered a separate tissue type called vascular tissue
• Plasma

  • extracellular material of blood
• What are the cellular elements of blood?

  • erythrocytes, leukocytes, and platelets
• Erythrocytes

  • function: oxygen transport
  • contain hemoglobin
• Hemoglobin

  • binds oxygen and gives RBCs their red color
• Erythrocytes of frog

  
• Erythrocytes of human

  
• Differences of erythrocytes of frog and human

  A) larger

  B) oblong

  C) present

  D) smaller

  E) biconcave disc

  F) not present

  
• 2 types of leukocytes

  • granulocyte
  • agranulocyte
• Lymphocyte

  
• Lymphocyte

  • small cells that possess a large, acentric nucleus and narrow area of cytoplasm
• Monocyte

  
• Monocyte

  • largest white blood cells
• Monocyte

  • possess unlobed, acentric, kidney-shaped nucleus
• Neutrophils

  
• Neutrophils

  • display a relatively light-stained granular cytoplasm
  • multi-lobed nucleus
• 2-5 lobes of nucleus of neutrophils that are connected by hair-like filaments
• Basophils

  
• Basophils

  • dense, dark, and large granules often masking the nucleus
• Eosinophils

  • bilobed nucleus
  • slender link connecting the lobes
  • stain reddish distinguishing from other granulocytes

  
• Lymphocytes

  • function: initiating acquired immune response of vertebrates
• Monocytes

  • function: give rise to macrophages when activated
• Neutrophils

  • body's initial phagocytic defense
• Basophils

  • associated with allergies and inflammation
• Eosinophils

  • function: defend against parasitic infections
• Types of leukocytes

  A) agranulocytes

  B) granulocytes

  C) 0

  D) 0

  E) 2-5

  F) 2

  G) 2