Human Anatomy & Physiology: cardovascular system: vessles Flashcards


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created 11 years ago by michelle_l_devlin
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College: First year
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science, life sciences, human anatomy & physiology
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1

controlling blood flow short -ten neutral and hormonal controls

sympathetic nerve
counteracts fluctuation in blood pressure by alter peripheral resistance
hormonal -adrenal medulla to the epithelial
cardiac output impacted

2

controlling blood flow long term renal regulation

counteract fluctuation in blood pressure by altering blood volume
retaining water lead to increase of BV and increase in blood pressure Losing water leads to decrease in BV leas decrease in BP

3

Tissue perfusion

level of blood flow

4

Blood flow tissue perfusion is involved in

delivery of O2 and nutrient and removal of waste from tissue cells
gas exchange lungs
absorption of nutrients (digestive tract)
urine formation(kidney)

5

Autoregulation

Sympathetic division
adjust blood flow to each tissue with proper requirement at any given time
controlled intrinsically bu modifying diameter of local arterioles
Independent of MAP, controlled to maintain constant pressure

6

Metabolic

muscular arteries and arterioles adjust their resistance to maintain tissues and metabolic needs

7

Metabolic controls

Hypermedia
vasodilation of arteries and relaxation of pre sphinchers occur in response to
-declining O2, Ph
_Increase H CO2, temp
Release No for vascular endothelial cells
vasocontriction due to sympathetic stimulation in endothelin

8

Hyperemia

triggering vasodilation lease to reducation is resistance and blood flow increase

9

Blood flow skeletal muscle

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