1
Q
blood
A
liquid connective tissue that consists of cells surrounded by a liquid extracellular matrix
2
Q
interstitial fluid
A
fluid that bathes body cells and is constantly renewed by the blood
3
Q
3 functions of blood
A
- Transportation: blood transports oxygen from the lungs to the cells of the body and carbon dioxide from the body cells to the lungs for exhalation; carries nutrients from the GI tract to body cells and hormones from endocrine glands to body cells
- Regulation: regulates pH through the use of buffers; adjusts body temperature; blood osmotic pressure influences the water content of cells
- Protection: blood can clot which protects against excessive loss from the cardiovascular system; white blood cells and antibodies protect against disease
4
Q
Physical Properties of Blood
A
- denser than water (feels sticky
- temperature is 38 C
- pH from 7.35-7.45
- bright red when saturated with oxygen and dark red when unsaturated
5
Q
2 components of blood
A
blood plasma and formed elements
6
Q
blood plasma
A
mostly water; some proteins
