5 23A. Which cation exerts significant osmotic pressure? (25pts) N at 238. Is th

Question

5 23A. Which cation exerts significant osmotic pressure? (25pts) N at 238. Is this cation the major cation of the extracellular i te mojor caton of the extra celloto fluid or intracellular fluid? (25pts) lvlar 24. The female hormone prgesteronn seems to decrease sodium reabsorption, thus promoting sodium and water loss by the kidney. (25pts) 25A. Which ion's concentration directly affects the resting membrane potential of neurons cells? (25pts) 25B. How does is ion participate in the body's pH buffer system? (1pt) 26A. What are the 3 ways to regulate/buffer the acid-base balance of the body? (1pt) 268. Which form of regulation can rid the body of acids generated by cellular metabolism? (.5pts) 27A. Respiratory acidosis that is caused by emphysema would be compensated for by which buffer hu Bicar bonote buffer

Explanation / Answer

25a) potassium ion concentration directly effects the resting membrane potential, at rest the cell membrane is most permeable to potassium because of more open potassium channels 25b) blood ph is adjust through excretion of hydrogen ion and conservation of bicorbonate, the kidney help control ph by excreting hydrogen ion 26a)3 ways to regulate acid base balance of the body are 1. buffering by extracellular and intra cellular buffer. 2.lungs:alveolarventilation, which controls paco2 (and increase effficiency of H2CO3/NaHCO3 buffer system ) 3. renal H+ excertion , which control plasma (HCO3)

27 the kidneys can rid the body of metabolic acids(phosporic, uric, and lactic acid and ketones) and prevent metabolic acidosis.the ultimate acid base regulatory organs are the kidneys.

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