Lecture 1 Blood Flashcards
Importance of blood include:
- Maintain pH of body (things that are in the blood act as buffers)
- transport O2 from lungs to tissues
- transport CO2 from tissues to lungs
- transport nutrients and ions and water from digestive tract to everywhere else in body
- transport hormones
- restricts fluid loss at site of injury (clots)
- protects body against foreign organisms (WBC)
- stabilize body temp
Definition of hormones
Involves something that’s transported in the blood after being released by endocrine gland
What is a buffer?
Something that will take up or release free hydrogen ions, to keep the pH from changing.
AKA a chemical that help to resist pH change.
What happens to the blood to retain heat?
Blood gets directed AWAY from the surface of the body and towards the core of our body.
What happens to the blood when we need to lose heat?
Blood goes to the surface
Does blood regulate anything such as body temp? YES/NO
No
What regulated body temp?
The hypothalamus
What is the normal blood and body temperature?
Blood temp: 38 degree C
Body temp: 37 degree C
What is viscosity?
Thickness of a fluid
Does blood have a higher viscosity than water? Y/N
Yes
Why does blood have a higher viscosity than water ?
Due to all the things in it, such as protein and different cells.
What is the normal pH of the blood?
7.35 to 7.45
What is the normal blood volume for the average adult male?
5-6 Liters of blood
What is the normal blood volume in an average adult female?
4-5 liters of blood
Why is the blood volume in males higher than females?
Due to the size of the person.
An average adult male is usually bigger than an average adult female. If the female is bigger, then she would have a higher blood volume.
What is a plasma?
The fluid part of blood and all the proteins it contains including the clotting proteins.
What do you call the fluid part of blood WITHOUT the clotting proteins?
Serum
What is blood made up of?
Plasma and formed elements
What are formed elements?
The cells in the blood. (RBC, WBC, Platelets)
What is the formal name for Red Blood Cells?
Erythrocyte
What is the formal name for White Blood Cells?
Leukocyte
What is the formal name for Platelets?
Thrombocyte
How much blood volume does RBC make up?
45%
Due to the blood volume of RBC, does most of the functions of blood have more things to do with RBC? T/F
True