ANATOMY

GENERAL ANATOMY

URINARY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following substances can be eliminated from the blood by tubular secretions?
A
potassium ions
B
hydrogen ions
C
ammonium ions
D
all of the above
Explanation: 

Detailed explanation-1: -Potassium ions, hydrogen ions and amnonium ions.

Detailed explanation-2: -The materials that are exuded into the tubular fluid for exclusion from the body include Potassium ions (K+), Hydrogen ions (H+), Ammonium ions (NH+), Creatinine, and Urea.

Detailed explanation-3: -Most of the reabsorption of solutes necessary for normal body function, such as amino acids, glucose, and salts, takes place in the proximal part of the tubule. This reabsorption may be active, as in the case of glucose, amino acids, and peptides, whereas water, chloride, and other ions are passively reabsorbed.

Detailed explanation-4: -These include glucose, amino acids, phosphate, lactate and citrate, which “piggy-back” on sodium co-transporters (membrane proteins that link the movement of two or more specific solutes together) that move sodium down its electrochemical gradient into tubule epithelial cells.

Detailed explanation-5: -Potassium ions (K+) Hydrogen ions (H+) Ammonium ions (NH4+) Creatinine. Urea. Some hormones. Some drugs (e.g., penicillin) 17-Jan-2023

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