Topic 12: Cardiovascular System - Blood (CT) + RBC Flashcards
1
Q
What are 4 characteristics of blood?
A
- higher viscosity than H2O
- 37 degrees C
- pH 7.35-7.45
- 4-6 L in an adult
2
Q
What are the two compositions of blood?
A
plasma - fluid portion with solutes
formed elements - cellular portion
3
Q
What is plasma (matrix)?
A
- blood minus formed elements
4
Q
What is plasma composed of? (3) give their percentages
A
90% water
8% protein
2% other solutes
5
Q
What are the 3 proteins found in plasma?
A
- albumin
- fibrinogen
- globulin
6
Q
What is the function of albumin?
A
- control tissue water balance
7
Q
What is the function of fibrinogen?
A
- clot formation
8
Q
What is the function of globulin?
A
antibodies
9
Q
What other solutes are in plasma? (5)
A
- nutrients
- hormones
- wastes
- electrolytes
- gases
10
Q
What are the formed elements of blood composed of? (3)
A
- RBC (erythrocytes)
- WBC (leokocytes)
- Platelets
11
Q
What is hematocrit?
A
- percent of blood volume that is RBC (45%)
12
Q
What are some characteristics of RBC? (4)
A
- biconcave disc shape
- anucleate when mature
- 120 day life span
- contain hemoglobin, a pigment protein
13
Q
Where are RBC destroyed?
A
- liver and spleen
14
Q
Hemoglobin contains heme. What is Heme? (3)
A
- red pigment
- contains iron
- attaches and transports O2
in lecture, it is why blood is metallic tasting. If low O2 in cell, it will drop O2 there
15
Q
Hemoglobin contains globin. What is globin?
A
- protein
- attaches and transports CO2
