BIO 669- Quiz 1 exam 2024/2025 with 100% correct answers
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Course
BIO 669- Q1
Institution
BIO 669- Q1
How much of the body's water is intracellular? correct answers2/3
How much of the body's water is extracellular? correct answers1/3
Interstitial: 75%
Intravascular: 25%
Smaller amountsL sweat, urine, transcellular
Populations susceptible to dehydration: correct answersPediatric and geriatr...
How much of the body's water is intracellular? correct answers2/3
How much of the body's water is extracellular? correct answers1/3
Interstitial: 75%
Intravascular: 25%
Smaller amountsL sweat, urine, transcellular
Populations susceptible to dehydration: correct answersPediatric and geriatric
Net filtration correct answersforces favoring filtration minus forces opposing filtration
Aquaporins correct answerssmall pores in cells that allow for water transport across plasma membrane
Solute correct answersElectrolytes/proteins
Solvent correct answersWater/plasms
Osmolarity correct answersConcentration of osmotically active particles in solution
Osmolarity= # of particles (in solution) x concentration of particles
hyposmotic correct answersLower osmotic pressure
hyperosmotic correct answershigher osmolarity
Osmosis correct answersMovement specifically of water in one direction or other based on high
concentration of H2O or low concentration of H20
,Isotonic correct answers2 solutions with the same osmotic pressure
Colloid osmotic pressure correct answerspressure created by protein in the blood
Reflection Coefficient correct answersaddresses the ability of a membrane to be permeated by a solute
on a scale of 0 to 1
0=fully permeable
1=impermeable
capillary hydrostatic pressure correct answersfacilitates the outward movement of water from the
capillary to the interstitial space
aka blood pressure
- A force that favors filtration
Interstitial oncotic pressure correct answersosmotically attracts water from the capillary into the
interstitial space
-Favors filtration
plasma oncotic pressure correct answersosmotically attracts water from the interstitial space into the
capillary
-Water-pulling
Favors reabsorption
Interstitial hydrostatic pressure correct answersfacilitates the inward movement of water from the
interstitial space into the capillary
Favors reabsorption
Filtration correct answersfluid movement out of the capillary and into the interstitial space
, Reabsorption correct answersfluid movement into the capillary from the interstitial space
Edema correct answersAccumulation of fluid within the interstitial spaces
Papilledema correct answersswelling of the optic nerve where it enters the retina
Baroreceptors correct answersstretch receptors measure pressure placed on vessel walls
What part of the brain stimulates thirst correct answershypothalamus
What part of the brain secretes ADH correct answersposterior pituitary
Normal chloride level correct answers96-109
Normal Mag level correct answers1.4-2.1
Normal phos level correct answers3-4.5
When is renin released? correct answersIn response to decreased volume
What does aldosterone do? correct answersIncreases reaABSORPTION of sodium and increases secretion
of potassium
Natriuretic peptide correct answersCauses sodium and water excretion
Sounds like diuretic
What are the signs and symptoms of hypernatremia? correct answersWater moves from ICF to ECF=cells
shrink
Thirst, weight gain, bounding pulse, Increased BP
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