Download AIIMS PG 2020 June Physiology Solved Paper
1. Gibbs-Donnan equilibrium is mainly by:
5. In skeletal muscle DHPR & RYR receptors are
2+
A. Ca
coupled by?
B. Phosphate
A. Chemically
C. Bicarbonate
B. Mechanically
D. Protein
C. Electrical followed by mechanical
Ans: D
D. Electrical
Donnan and Gibbs showed that in the presence of a
Ans: C
non-diffusible ion (protein), diffusible ions distributes
Electrical activation of T-tubules activates DHPR
themselves differentially at equilibrium.
channel on it, which interact mechanically with RyR
on SR membrane for release of calcium. If it's not in
option, then single best is mechanical.
2. Calculate ECF volume from the following. 10gm
mannitol injection given in venous blood. At
equilibrium, urinary excretion 10% & plasma
6. 65 year old male patient visited to ER for chest
concentration of mannitol is 65mg/100ml.
pain and his BP was measured as SBP 190 mmHg,
A. 14L
DBP 100 mmHg, Pulse pressure 90 mmHg.
B. 10 L
Which of the following parameter that should
C. 28 L
decrease for this high pulse pressure
D. 12 L
A. Arterial wall compliance
Ans: A
B. Stroke volume
This is based on formula; V= (Q-e)/c =
C. Cardiac output
9000mg/0.65mg/ml = 13.8L
D. Myocardial contractility
Ans: A
Low compliance increases SBP, rising the PP.
3. Which of the following hormone have intracellular
receptor:
A. Thyroxin
7. Which of the following is not required for
B. Glucagon
calculation of creatine clearance ?
C. Epinephrine
A. Urine creatine
D. Parathormone
B. Serum creatinine
Ans: A
C. Volume of urine in 24 hrs
Thyroxin has intranuclear receptor. All others
D. Volume of serum in the kidney in 24hrs
hormones in this option have membrane receptors.
Ans: D
This clearance estimation based on UV/P formula. 24
hour urine is collected and creatinine concertation is
4. In negative feedback, feedback gain is infinity in
measure.
which of the following
A. Temperature control in hypothalamus
B. Blood volume control by kidney
C. Blood pressure control by baroreflex
8. Single neuron receive 500 inputs from 150
D. No such infinite feedback gain is not possible
different sensory cells
Ans: B
A. Feedback inhibition
For a given intake of salt and a given functional state
B. Feedforward excitation
of the kidneys, there is only one single arterial pressure
C. Convergence
that will provide a balance between intake and output
D. Divergence
of salt. Because of this the arterial pressure, in the long
Ans: C
run, will always attempt to return exactly to this
This is an example of convergence of input signals
pressure level (error = 0).
(excitatory or inhibitory) from multiple sources.
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PHYSIOLOGY:
AIIMS PG JUNE 2020: Physiology Solved
9. Mechanism of Transcutaneous electrical
stimulation (TENS) for pain management of pain:
A. Inhibitory neurotransmitter at spinal cord
B. Adrenergic receptor stimulation
C. Gating at spinal cord
D. Supraspinal control
Ans: C
Modulation of gate-control mechanism of pain serves
as the rationale behind the use of transcutaneous
electrical nerve stimulation (TENS) for pain relief.
Ans: B
This method uses electrodes to activate A and A
fibers near the injury.
The fetal hemoglobin (hemoglobin F) is composed of
22 [above graph, Chain A: ; Chain B: ]
In young embryos there are, in addition, and chains
[Chain D in above graph], forming Gower 1
10. In physiology viva, examiner asked to student
hemoglobin (22) and Gower 2 hemoglobin (22).
"who recorded first human EEG?. Student
responded `I don't know'. Examiner felt bad and
decide to give him a hint, "the name rhymes with
what you get at McDonald's" Then the student
gave the right answer. Here, the student uses
which type of memory:
A. Priming
B. Reflex
C. Associated learning
D. Declarative memory
Ans: Priming
Priming is the facilitation of the recognition of words
or objects by prior exposure to them and is dependent
on the neocortex. Students answer "Hans Berger
recorded the first human EEGs in 1924!!!".
Associative learning relates to classical and operant
conditioning in which one learns about the relationship
between one stimulus and another. This type of
memory is dependent on the amygdala for its
emotional responses and the cerebellum for the motor
responses.
Analysis: All questions are from basic textbook
only (Ganong/Guyton) and all questions are from
11. The graph below shows the normal rate of
simple principle of physiology only. No
synthesis of the various haemoglobin chains in
controversial questions.
utero, and after birth. Gamma chain of
haemoglobin is indicated by which of the
following:
A. A
B. B
C. C
D. D
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PHYSIOLOGY:
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This post was last modified on 31 July 2021