#kidney physiology practice

Excretory System

Macula densa detects changes in concentration of:

The correct answer is C: Sodium chloride. In Excretory System, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, Sodium chloride is the option that correctly names the structure, process, or principle asked for in Excretory System. That is why Sodium chloride is the option that holds up when you check it against basic physiology. When you revise, say the answer out loud with one short reason attached; that sticks better than rote lists. Remember that physiology questions reward precise language: name the process, the location, and the outcome, then match that to the option text.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Excretory System

Mesangial cells influence GFR by:

Pick B: Altering capillary diameter. Thinking about Excretory System in a practical way — what the structure does, or what the process achieves — leads you here. Clinically and academically, the same logic shows up again and again: Altering capillary diameter is the option that correctly names the structure, process, or principle asked for in Excretory System. Hence Altering capillary diameter is correct. Treat this as a building block for the rest of Excretory System; neighbouring topics often reuse the same principle. Keep a one-line summary card for this idea and revisit it before the paper; short, repeated review beats long cramming sessions.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Excretory System

Negative charges of basement membrane mainly prevent filtration of:

Pick C: Plasma proteins. Thinking about Excretory System in a practical way — what the structure does, or what the process achieves — leads you here. Clinically and academically, the same logic shows up again and again: the functional job described in the stem is exactly what Plasma proteins does in Excretory System. Hence Plasma proteins is correct. Treat this as a building block for the rest of Excretory System; neighbouring topics often reuse the same principle. Keep a one-line summary card for this idea and revisit it before the paper; short, repeated review beats long cramming sessions. If the wording feels dense, translate it into everyday language first, then map that plain sentence back onto Plasma proteins.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Excretory System

Glomerular capillaries differ from true capillaries by having:

Pick C: Fenestrated endothelium. Thinking about Excretory System in a practical way — what the structure does, or what the process achieves — leads you here. Clinically and academically, the same logic shows up again and again: Fenestrated endothelium is the option that correctly names the structure, process, or principle asked for in Excretory System. Hence Fenestrated endothelium is correct. Treat this as a building block for the rest of Excretory System; neighbouring topics often reuse the same principle. Keep a one-line summary card for this idea and revisit it before the paper; short, repeated review beats long cramming sessions. If the wording feels dense, translate it into everyday language first, then map that plain sentence back onto Fenestrated endothelium.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Excretory System

Aldosterone increases Na⁺ reabsorption by acting on:

Go with B — Principal cells. Within Excretory System, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, Principal cells is the option that correctly names the structure, process, or principle asked for in Excretory System. Holding that picture in mind makes Principal cells feel natural rather than something you only memorise. Link the term to a real body example (organ, tissue, or ion flow) so the idea stays concrete under exam pressure. A short mental diagram helps — start from stimulus or structure, follow the pathway, and stop at the functional result described by Principal cells.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Excretory System

Which part of nephron is impermeable to water?

Correct option is B, Thick ascending limb. In Excretory System, the accurate description is Thick ascending limb, and that is what you should commit to memory. Keep the definition tight and the role clear — Thick ascending limb is the option that correctly names the structure, process, or principle asked for in Excretory System. Then Thick ascending limb is the answer you can defend. Check yourself by covering the options and writing the answer first, then matching the letter — that builds confidence. If the wording feels dense, translate it into everyday language first, then map that plain sentence back onto Thick ascending limb.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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