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Body Fluid Regulation - Coggle Diagram
Body Fluid Regulation
Dehydration
Increased Osmoreceptors
Decreased stretech receptors
Vassopression - pituatry gland
Hypothalamus increases thirst
AIM
Reduce osmolarity
Increase fluid volume
Increase BP
Blood volume distribution
Total blood volume = 5L
Heart and Pulmonary circulation = 15%
Arteries vessels 10%
Capilaries 5%
Veins 70%
Hormones
Vassopressin (ADH)
Aldosterone: Conservation of Na+
Atrial Natriuretic Peptide (ANP): Promotes Na+ and water EXCRETION
Risk factors
Low risk: 120/80
Medium risk: 121-139/80-89
High risk 140+/90
Blood Volume
Increased - Increased BP
Decreased - Decreased BP
Fluid regulation
Kidneys
Conserve fluid
Na+ reabsorption
Affected by vassopressin and aldosterone
Hormonal factors
NP
Increased blood volume causes increased atrial stretch
Angiotensin II
Aldosterone from adrenal glands
Vasoconstriction Increases BP (We are NOT talking about total blood volume)
Vassopression secretion
Thirst Hypothalamus
Aldosterone
Na+ reabsorption
Stimulated by decreased BP and increased K+
Mean Arterial Pressure (average blood pressure during a single cardiac cycle)
MAP = DP + 1/3(SP-DP) = 93 mmHG
MAP = cardiac output x total peripheral resistance
Cardiac output - really is the amount of blood it can eject in one minute
CO = Heart rate X Stroke Volume
TPR = total resistance
Smaller diameter: higher resistance
Longer length: higher resistance
BP Regulation
ANS (Short Term)
Sympathetic
Increases HR & SV
Increased CO
Increases MAP
Arterioles dilate
Parasympethetic
Decreases HR & SV
Arterioles constrict
Hormonal (Long Term)
Vasoconstricters
Epinephrine/adrenaline
Epiniehrine binds to alpha - Contrsiction elsewhere in the body
Beta receptors - dilation in SK muscle heart liver (To increase the cardiac)
Angiotensin II
Vasopressin/ADH
Vasodilators
Epinephrine
ANF