GFR/re-absorption/excretion

[JoAyi]

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Can anyone tell me if it is correct:

constriction to efferent arteries--blood pressure increased--GFR increased--re-absorption increased--excretion increased (including sodium excretion)

constriction of afferent arteries--blood pressure decreased--and the rest are just opposite to the above.

Thanks for helping~

 

[boaz]

Can anyone tell me if it is correct:

constriction to efferent arteries--blood pressure increased--GFR increased--re-absorption increased--excretion increased (including sodium excretion)

constriction of afferent arteries--blood pressure decreased--and the rest are just opposite to the above.

Thanks for helping~

Everything is correct except for the part in bold. Excretion is the opposite of reabsorption.
The reason reabsorption is increased is because both the hydrostatic and osmotic pressure gradients (in the direction of tubule-->renal capillary) are higher than usual. Hydrostatic, because constriction of efferent arteriole leads to lower volume in downstream vessels. Osmotic, because higher GFR decreases blood solvent volume while having no effect in blood [protein], which results in higher blood [protein].