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16 Cards in this Set

  • Front
  • Back
external changes and the internal stays the same.
Name one example of Homeostasis
Dynamic Equilibrium
What two systems maintain Homeostasis?
Nervous system & Endocrine system
Describe negative feedback and give two examples?
negative feedback is when it goes away from set point and will bring it back.
Two examples are: Blood Sugar and Blood Pressure.
Describe Positve feedback and give two examples?
Positive feedback is when a variable moves away from set point and keeps going.
Two examples are: Blood clotting and Labor.
Name the parts of the Cardiovascular system?
blood vessels
lymphatic vessels
What is the main job of the cardiovascular system?
to help maintain the homeostasis within the body.
What are the main components of blood?
plasma and formed elements
What is plasma made of, and what are the roles of its components?
Plasma is made mostly of water.
Albumin-osmotic pressure
Fibrogen- blood clots
What is whole blood vs. Serum?
plasma+formed elements = whole blood
Plasma+fibrogen = Serum
What are the formed elements of blood? How abundant are each of them?
Erythrocytes = carry oxygen 95%

Leukocytes = WBC's Immune system

Platlets = blood clots

WBC'S+Platlets = 5%
Hematopoiesis or Hemopoiesis?
The production of blood
Where in the body for growing children is blood produced?
blood is produced in the red bone marrow of long bones of the leg, sternum, ribs, vertebrae, and pelvis.
Where in the body for adults is blood produced?
blood is produced in the sternum, ribs, vertebrae, and pelvis (axial skeleton)
What happens during severe blood loss?
blood formation starts where blood is lost, and this includes the liver and spleen.
Why don't red blood cells live very long?
because they do not have a nucleas to help them live longer.