Table 3.2 regulators of fluid Hemeostatic Mechanism and Actions

Question 1

Cardiovascular

Answer 1

Baroreceptor in carotid sinus & aortic arch responds to the hypovolemia. ANF (Atrial Neutretic Factor) is a direct vasodilator-lowering BP

Question 2

Lungs

Answer 2

lungs excrete 400-500 ml of body water daily through normal breathing

Question 3

Lymphatics

Answer 3

Plasma protein that shifts to the tissue space

Question 4

Lymphatics

Answer 4

Plasma protein that shifts to the tissue space cannot be reabsorbed into the blood vessels. Lympathic system promotes the return of water and protein from the interstitial spaces to the vascular spaces

Question 5

Skin

Answer 5

Skin excretes 300-500 ml of water daily through normal perspiration

Question 6

Electrolyte

Answer 6

Sodium promotes water retention. With a water defecit less sodium is excreted via kidneys; thus more water is retained.

Question 7

Nonelectrolytes

Answer 7

Protein and albumin promotes body fluid retention. These nondiffusable substances increased the colloid osmotic (oncotic) pressure in favor of fluid retention.