#membrane potential question

Cardiovascular System: Heart

Resting membrane potential of ventricular muscle cell is approximately:

-90 mV (C) is the right choice. This sits at the heart of Cardiovascular System: Heart: the wording points straight to what is happening in the tissue or organ system. A useful study habit is to ask what the structure or process is for: -90 mV is the option that correctly names the structure, process, or principle asked for in Cardiovascular System: Heart. That reasoning supports -90 mV. One solid sentence about why this works is enough for recall — you do not need a long essay for every MCQ. When you practise, cover the choices first, write -90 mV from memory, then reveal the letter — that habit builds real recall for Cardiovascular System: Heart.

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.

View Details

Action potential

During depolarization, membrane potential becomes:

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

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.

View Details

Action potential

Decrease in extracellular Na+ concentration would primarily affect:

Go with B — Amplitude of action potential. Within Action potential, 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 Amplitude of action potential does in Action potential. Holding that picture in mind makes Amplitude of action potential 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 Amplitude of action potential.

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.

View Details

Action potential

Local potentials mainly occur at:

Pick C: Dendrites and cell body. Thinking about Action potential 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 Dendrites and cell body does in Action potential. Hence Dendrites and cell body is correct. Treat this as a building block for the rest of Action potential; 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.

View Details