The High Osmolarity of the Renal Medulla Is Maintained by All

question 31

Multiple Choice

The high osmolarity of the renal medulla is maintained by all of the following except

• A) diffusion of salt from the thin segment of the ascending limb of the loop of Henle.
• B) active transport of salt from the upper region of the ascending limb.
• C) the spatial arrangement of juxtamedullary nephrons.
• D) diffusion of urea from the collecting duct.
• E) diffusion of salt from the descending limb of the loop of Henle.

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Definitions:

Death Instinct

A psychoanalytic concept suggesting that individuals possess an unconscious wish to die or self-destruct, counterbalanced by life-sustaining instincts.

Psychodynamic Approach

A psychological perspective that emphasizes the influence of the unconscious mind on behavior, as well as the dynamics of interpersonal relationships.

Thanatos

In Freudian psychoanalysis, a drive towards death or self-destruction, often contrasted with the life instinct, Eros.

Evolutionary Social

An approach in social science that examines social behaviors through the lens of evolutionary theory and principles.