#respiratory physiology practice question

Lung Volumes, Capacities and Regulation

DRG neurons send impulses primarily to:

Correct option is C, Diaphragm and external intercostals. In Lung Volumes, Capacities and Regulation, the accurate description is Diaphragm and external intercostals, and that is what you should commit to memory. Keep the definition tight and the role clear — the functional job described in the stem is exactly what Diaphragm and external intercostals does in Lung Volumes, Capacities and Regulation. Then Diaphragm and external intercostals 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 Diaphragm and external intercostals.

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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Lung Volumes, Capacities and Regulation

Vital capacity (VC) is the sum of:

Pick C: IRV + TV + ERV. Thinking about Lung Volumes, Capacities and Regulation 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: IRV + TV + ERV is the option that correctly names the structure, process, or principle asked for in Lung Volumes, Capacities and Regulation. Hence IRV + TV + ERV is correct. Treat this as a building block for the rest of Lung Volumes, Capacities and Regulation; 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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Respiratory System; Exchange of Gases

Haldane effect explains increased CO2 transport when hemoglobin is:

Answer: B) Deoxygenated. For Respiratory System; Exchange of Gases, once you lock onto the key mechanism or definition, Deoxygenated is the clear fit. If you restate the concept in your own words, Deoxygenated is the option that correctly names the structure, process, or principle asked for in Respiratory System; Exchange of Gases. So Deoxygenated 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.

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Cardiac Cycle and Regulation

Respiratory distress syndrome in neonates is mainly due to deficiency of:

Answer: B) Critical limit. For Cardiac Cycle and Regulation, once you lock onto the key mechanism or definition, Critical limit is the clear fit. If you restate the concept in your own words, the functional job described in the stem is exactly what Critical limit does in Cardiac Cycle and Regulation. 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.

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Cardiac Cycle and Regulation

Elastic recoil of lungs mainly contributes to:

Go with C — Expiration. Within Cardiac Cycle and Regulation, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, the functional job described in the stem is exactly what Expiration does in Cardiac Cycle and Regulation. Holding that picture in mind makes Expiration 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 Expiration.

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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Cardiac Cycle and Regulation

Type II alveolar cells constitute about what percentage of alveolar surface area?

Go with C — 10%. Within Cardiac Cycle and Regulation, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, 10% is the option that correctly names the structure, process, or principle asked for in Cardiac Cycle and Regulation. Holding that picture in mind makes 10% 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 10%.

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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Cardiac Cycle and Regulation

Pulmonary surfactant is secreted mainly by:

Pick B: Type II pneumocytes. Thinking about Cardiac Cycle and Regulation 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 Type II pneumocytes does in Cardiac Cycle and Regulation. Hence Type II pneumocytes is correct. Treat this as a building block for the rest of Cardiac Cycle and Regulation; 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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Cardiac Cycle and Regulation

The respiratory zone of lungs includes all EXCEPT:

Correct option is D, Terminal bronchioles. In Cardiac Cycle and Regulation, the accurate description is Terminal bronchioles, and that is what you should commit to memory. Keep the definition tight and the role clear — the stem is asking for the statement that does not fit the usual rule, and Terminal bronchioles is that exception in the context of Cardiac Cycle and Regulation. Then Terminal bronchioles 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 Terminal bronchioles.

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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