peripheral circulation 1/17

Question 1

blood vessels always carry blood from high pressure to low pressure ares in body tissue. 2 exceptions?

Answer 1

umbilical vein (in utero)
pulmonary veins

Question 2

what influences peripheral circulation

Answer 2

elasticity and extensibility of vessel walls
peripheral resistance
amount of blood in body

Question 3

what is primary site of vascular resistance?

Answer 3

arterioles

Question 4

where does nutrient exchange occur between blood and tissues?
walls are thin and permeable

Answer 4

capillaries

Question 5

how are veins different than arteries?

Answer 5

• transport unoxygenated blood back to heart
• larger capacity
• thinner walls, greater number
• one way valves to prevent back flow
• superficial and deep veins

Question 6

which veins follow arteries?

Answer 6

deep veins

Question 7

what is venous circulation influenced by?

Answer 7

muscle contraction
gravity
respiration - increased with inspiration
compliance of R heart

Question 8

organs of lymphatic system?

Answer 8

lymph nodes
tonsils
spleen
thymus
thoracic duct

Question 9

order lymph travels

Answer 9

lymphatic capillaries
> lymphatic vessels
> thoracic/R lymphatic ducts
> L subclavian vein

Question 10

what part of nervous system influences lymphatic contraction?

Answer 10

parasympathetic, sympathetic, sensory nerve stimulation

Question 11

what influences lymphatic contraction

• muscles?
• respiration
• skin
• lymphatic vessels

Answer 11

- adjacent muscle contraction
respiration changes 
- abdominal and thoracic cavity pressure
- mechanical stimulation of dermal tissue
- volume change in each lymphatic tissue

Question 12

upper body lymph nodes?

Answer 12

submaxillary
cervical
axillary
cubital

Question 13

lower body lymph nodes?

Answer 13

mesenteric
iliac
inguinal
popliteal