Ch. 17-19 Cardiovascular System Flashcards
What is the normal blood volume?
5 liters, depending on how small or large you are
What is blood made of?
-Two components: plasma and blood cells
-Plasma & Blood cells make up “whole blood”
What is Plasma?
-Liquid part of the blood
-Contains proteins, electrolytes, etc.
-55% of blood volume
-Vast majority of plasma is water
What is the Blood Cells?
-Red Blood Cells (RBC) or Erythrocytes
-White Blood Cells (WBC) or Leukocytes
-Platelets or Thrombocytes
CBC
Complete Blood Count
Erythrocytes
Red Blood Cells
4 million to 6 million per microliter in the body
What is the primary job of Erythrocytes?
To carry oxygen and a little CO2 throughout the body to all the cells of the body
Hemoglobin
The part of the red cells that allow for the oxygen binding transport delivery
Why do our cells need glucose and ATP?
Glucose for fuel
ATP for energy
What is aerobic metabolism?
To convert glucose to ATP, or fuel to energy, there needs to be enough oxygen in our system
What is Anemia?
When someone has a low RBC count or a low Hemoglobin concentration they do not have much oxygen transported
They are more tired
What is Sickle Cell Anemia?
A specific type of anemia where many of the RBCs are shaped abnormally
The cells are called sickle cells and they don’t carry oxygen well.
The body sees these cells as abnormal, so it tries to get rid of them, making RBC count decrease even more
Normal RBC
Circulates for 120 days
The shape of a lifesaver without the hole in the middle called the biconcave disc
Leukocytes
White Blood cells
5k to 10k cells per microliter
What is the primary function of WBCs?
Host defense
Helps defend our body from foreign invaders
Helps protect us from cells that are bad
(Our body’s police force)
