Lymphatic And Venous System Function Flashcards
How does the cellular membrane structure differ in lymphatic capillaries?
- Tight junctions not present btwn endothelial cells
- Fine filaments anchor vessels to surrounding CT
Which tissues lack lymphatics?
- Cartilage and bone
- Epithelial
- CNS
What is the mean capillary hydrostatic pressure of a healthy lung?
8 mmHg
What is a healthy filtration coefficiency for the whole body?
0.006 mL/min/100 g tissue/ mmHg
Explain formation of edema in pregnancy and associated conditions.
- Concentrations of plasma proteins may increase colloid osmotic pressure and movement of fluids across capillary membrane
- Increased capillary hydrostatic pressure leads to Congestive heart failure
What happens to fluid balance in nephrotic syndrome, liver sirrhosis, and protein malnutrition?
- decreased oncotic pressire
Or
- decreased vascular oncotic pressure
How does Venous pressure differ between standing and exercise?
- Standing gradually increases pressure in veins
- Exercise decreases venous pressure
How does Venous distention relate to CHF?
central venous pressure is
abnormally elevated, the superficial neck veins are distended, + do not
collapse even when the person sits or stands.
What is the
Muller maneuver?
Strong inspiration effort against a closed glottis
What is the valsalva maneuver?
Straining against a closed glottis
What are the four main blood reservoirs?
- Spleen
- Liver
- Large abdominal veins
- Skin