Blood chapter 19 Flashcards
1
Q
- Name 5 general functions of blood
A
- Transport of waste products, oxygen, nutrients
- Control pH and ionic composition of interstitial fluids
- Body temp homeostasis
- clotting
- Immune defence
2
Q
- If blood is a connective tissue, what constitutes an extracellular matrix
A
plasma
3
Q
- What percentage of blood is comprised of cellular elements?
What percent of plasma is water?
A
45% cellular elements. the other 55% being plasma
What percent of plasma is water? 92%
4
Q
What is serum? What is hematopoiesis?
A
Serum = plasma minus clotting agents (fibrinogen and clotting factors) Hematopoiesis = formation of formed elements from myeloid stem cells and lymphoid stem cells
5
Q
- What is the most abundant class of plasma protein? Why is it important?
A
Albumins- They help circulate hormones
6
Q
- What class of plasma protein is largely responsible for transporting other molecules through circulation?
A
Globulins
7
Q
- Where are plasma proteins synthesized
A
90% in the Liver
8
Q
- Name four general functions of plasma proteins.
A
Clotting (Fibrinogen and Prothrombin) Transport Immune defence (globulins) PH balance Nourishment of tissue cells
9
Q
- What is the average red blood cell count for a normal adult male?
A
- Males: 4.5-6.3 million/microliter
* Females: 4.2-5.5 million/microliter
10
Q
- What is included in the “packed cell volume”?
A
Red blood cells
11
Q
- What is the most abundant formed element in blood?
A
Red blood cells
12
Q
- What is the diameter of a red blood cell how would you describe its shape.
A
7-8 micrometers
13
Q
12.5 What gives the Red blood cell its color?
A
Hemoglobin
14
Q
- What is the biggest advantage of the peculiar shape of the red blood cell?
A
So it can squeeze between tissues (has no nucleus)
Flexibility
Stack-ability
Surface area to volume ratio
15
Q
- Approximately how many O2 molecules can a normal RBC carry?
A
280 million hemoglobin each hemoglobin can carry 4 O2 molecules
