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BIOLOGY TOPIC 11 ANIMAL PHYSIOLOGY (HL)

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Pregunta:

How is a salt gradient established in the loop of Henle? (5)

Autor: Sammy Universe

How is a salt gradient established in the loop of Henle? (5)



Respuesta:

Descending limb = water permeable ascending limb: salt permeable so when the loop descends into medulla the fluid becomes salty (hypertonic) the vasa recta surrounding the loop flows in the opposite direction (counter-current) = so salt absorbed in ascending limb is also drawn down into medulla = bigger salt gradient


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