Chapter 16

  1. Buffy Coat
    a thin, whitish layer present at the erythrocyte-plasma junction.

    Contains white blood cells (leukocytes)

    45% of total blood volume
  2. Distribution functions of blood include
    O2 from lungs and nutrients from the digestive tract to all body cells.

    metabolic waste from cells to elimination sites.

    Hormones from endocrine organs to tartget organs.
  3. Regulatory functions of blood include
    maintaining:

    body temp by absorbing and distributing heat to body and skin

    normal pH in body tissue

    adequate fluid volume in circulatory system w/ salts and blood proteins
  4. Protective functions of blood include:
    Preventing:

    blood loss - proteins initiate clots

    infection-antibodies, complement proteins & WBCs defend against invaders
  5. Plasma
    staw-colored, sticky fluid

    90% water

    most abundant plasma solutes
  6. Albumin
    60% of plasma protein

    shuttles certain molecules thru circulation

    important blood buffer

    major blood protein to plasma osmotic pressure (sodium ions are the other)
  7. hematocrit
    45% total volume of blood

    males - 47%...5%

    females - 42%...5%
  8. formed elements
Author
Anonymous
ID
103274
Card Set
Chapter 16
Description
Blood
Updated