Circulatory 2

Question 1

Pre-Capillary Sphincters

Answer 1

CONSTRICT SPHINCTER: close capillary bed

RELAX SPHINCTER: open

Question 2

Metatrteriole

Answer 2

runs between arteriole and venule

Question 3

3 types of capillaries

Answer 3

1. CONTINUOUS
   - least permeable
   - most common
   - muscle, lungs, brain, CT
2. FENESTRATED
   - bigger pores (bigger leaks)
   - kidneys, small intestine
3. SINUSOIDS
   - large clefts for RBCs, proteins
   - liver, bone marrow, spleen

Question 4

Capillary blood pressure

Answer 4

• Hydrostatic pressure (wants to flow out)

- encourages fluid to flow into tissue

Question 5

Interstitial fluid hydrostatic pressure

Answer 5

opposes hydrostatic pressure

Question 6

plasma colloid osmotic pressure

Answer 6

• movement of fluid into capillary
• pull on water
• inflammation response that is triggered when water goes out

Question 7

Interstitial fluid colloid osmotic pressure

Answer 7

opposes plasma colloid osmotic pressure