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Excretory System

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60 questions

Constriction of afferent arteriole will:

Answer: B) Critical limit. For Excretory System, once you lock onto the key mechanism or definition, Critical limit is the clear fit. If you restate the concept in your own words, Critical limit is the option that correctly names the structure, process, or principle asked for in Excretory System. So Critical limit is the clean, accurate selection. If a similar stem appears later, start from the same core fact and you will land on the same kind of answer. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other.

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.

GFR remains nearly constant when mean arterial pressure ranges between:

Answer: C) 80–180 mmHg. For Excretory System, once you lock onto the key mechanism or definition, 80–180 mmHg is the clear fit. If you restate the concept in your own words, 80–180 mmHg is the option that correctly names the structure, process, or principle asked for in Excretory System. So 80–180 mmHg is the clean, accurate selection. If a similar stem appears later, start from the same core fact and you will land on the same kind of answer. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other. When you practise, cover the choices first, write 80–180 mmHg from memory, then reveal the letter — that habit builds real recall for Excretory System.

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.

Normal glomerular filtration rate (GFR) in adult male is about:

Answer: C) 125 mL/min. For Excretory System, once you lock onto the key mechanism or definition, 125 mL/min is the clear fit. If you restate the concept in your own words, 125 mL/min is the option that correctly names the structure, process, or principle asked for in Excretory System. So 125 mL/min is the clean, accurate selection. If a similar stem appears later, start from the same core fact and you will land on the same kind of answer. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other.

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.

Net filtration pressure is calculated as:

Correct option is B, GBHP − CHP − BCOP. In Excretory System, the accurate description is GBHP − CHP − BCOP, and that is what you should commit to memory. Keep the definition tight and the role clear — GBHP − CHP − BCOP is the option that correctly names the structure, process, or principle asked for in Excretory System. Then GBHP − CHP − BCOP 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 GBHP − CHP − BCOP.

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.

Normal net filtration pressure (NFP) is approximately:

The correct answer is B: 10 mmHg. In Excretory System, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, 10 mmHg is the option that correctly names the structure, process, or principle asked for in Excretory System. That is why 10 mmHg 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.

Tubuloglomerular feedback regulates GFR by altering:

The correct answer is B: Afferent arteriole diameter. In Excretory System, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, Afferent arteriole diameter is the option that correctly names the structure, process, or principle asked for in Excretory System. That is why Afferent arteriole diameter 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.

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.

Juxtaglomerular cells primarily secrete:

Pick B: Renin. 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 Renin does in Excretory System. Hence Renin 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 Renin.

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.

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.

Which protein is the core component of slit diaphragm?

Go with B — Nephrin. Within Excretory System, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, Nephrin is the option that correctly names the structure, process, or principle asked for in Excretory System. Holding that picture in mind makes Nephrin 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 Nephrin.

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.

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.

The filtration barrier includes all EXCEPT:

Pick D: Mesangial matrix. 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 stem is asking for the statement that does not fit the usual rule, and Mesangial matrix is that exception in the context of Excretory System. Hence Mesangial matrix 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.