Download MBBS KGMU 1st Year 2021 Physiology Paper I Question Paper

Download MBBS (Bachelor of Medicine and Bachelor of Surgery) KGMU (King George's Medical University) 1st Year (First Year) 2021 Physiology Paper I Previous Year Question Paper

MBBS FIRST PROFESSION
AL EXAMINA'I?I()'\. 2021
PHYSIOLOGy
Paper |
Time Alloweq: Three Hours
s Ser Maximum Marks- 100
??==_Altem Stions. All part of i
Parenthesis tnticdar it :qiucc;::;n should be answered together. Figures in
Section-A
Q1. Explain the i
generation of resting membra ial i
- o o ne potential in a nerve fibre (20)
(a) Excitation-contraction coupling in skeletal muscle o
(!)) Cell mediated immunity -
Q3. Multiple Choice Questions: (0x1)
X
1.
Why do most control systems of the bod i
operate by negative fi
rather than positive feedback? il .
&) Positive feedback system can bring unstabilty
(b) Better gain
(c) Better regulation factor
(d) Less residual error
2. The se!ectivity of protein channel or pores in a cell membrane is due to
(a) Helical structure of proteins
(b) lon properties
Ae) Pore diameter and electrical charges
(d) Special arrangement in cell membrane
3. 3% of the macrophage cell membrane is engulfed in the form of vesicles
every minute. Which is main cell membrane fibrillar protein involved in this
multistage process?
) Clathrin
(b) Dyenin
(c) Spectrin
(d) Titin
4. A young woman presents with complaints of weakness in lower extremities,
parasthesia, blurring of vision and dysarthria, which are worse in summer.
She is diagnosed to have multiple sclerosis. It is due to
(a) Vitamin E deficiency
(b) Cerebral ischemia
(c) Microangiopathy
Autoimmune destruction of myelin
5. A nerve was stimulated using a bipolar stimnlating electrode. An eleclri.ctl
stimulus of strength 1mV was applied for stimulation. There was no action
potential generated. Thereafter, the strength of stimulus wa; pt;gr?esswel:
increased by ImV and an action potential was generated :t 10 mV strength.
Which statement is correct regar:;:ig (!le a?bove statement?
(a) 1 mV strength sti.mulus is thres s:mu u:ce el
() 3 ? m?? cm:::::e::?\:c:::;b::: potential at 9 q\V strength stimulus
5 Gradedw;sotemials are generated at 10 mV strength stimuli
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Qlo
Q2.
KGMU Feb. 2021
rises back to normal value i 5 few minutes Thi
is known as )
) Latch phenomenon
(b) Stress relaxation
(c) Reverse stress relaxation
(d) Elasticity
7. What condition leads to a deficien
an intravenous injection of
&5 Classic haemophilia
(b) Hepatitis B
(c) Bile duct obstruction
(d) Genetic deficiency in antithrombin 11}
8. Mechanism of heparin to prevent blood coagulation is
d2) Antithrombin 111 activation
(b) Binding and inhibition of tissue factor
(?) Binding available calciom
(d) Inhibition of platelet-activating factor
9. Binding of 1gG and complement to an inv ading microbe to facilitate
recognition is
(a) Chemokinesis
J?J Opsonization
(c) Phagolysosome fusion
l&(:)mr:l:?dmmu to emergency with a 2-week history of dh:hn.
He has minimal urine output. His stool specimen is positive for parasit
Which type of WBC would be increased in blood
?y in factor IX that can be corrected with
vitamin K?
Eosinophil
(b) Monocyte
(?) Neutrophil
(d) Lymphocyte
Section-B
i i f on.
Explain the neural & chemical regulation of respirati e
Write short notes on:
Glomerular filtration rate.
g; Secretion of acid h?thcmxh cehats
h: Mwc::l?unb@ldzmnwhn one is breathing pure
) oxygen will be
(a) 60 mmHg
~(b) 80 mmHg
2 et
100 mm 5
2 @W)hleld&omww?,g?m?
(a) Alveolar PCO2
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4. The tubular trans
port maxi .
(a) 180 mg/min haximum for glucose in men is about
(b) 220 mg/min
(c) 280 mg/min
Ad) 375 mg/min
5. The reabsorption of glucose and amino-acids i
&Y Early part of proximal convoluted lubulacmds 3
(b) Late part of proximal convoluted tubule
(c) Early part of distal tubule
(d) Late part of distal tubule
- ?os:;:?:ri? ;cudently lost in an island. He drinks 1 litre of sea water as he
A ind any other water source in the area. He started feeling thirstier,
ry mouth and skin, had headache. This condition has appeared due to:
(a) Loss of obligatory urine volume s ?
?#b) Loss of facultative urine volume
Overhydration of body fluids
(d) Loss of dilute urine
7. The reason for polyuria in Diabetes Mellitus is:
(a) Pressure diuresis N
b) Osmotic diuresis
(c) Water diuresis
(d) Pressure natriuresis
8. A new mother calls the pediatrician because she is concerned that her infant
defecates after_every meal. Which of the following is the cause of these
normal bowel movements in newborns
(a) The gastroileal reflex
The gastrocolic reflex
(c) Peristaltic rush
(d) The defecation reflex
9. Most of the iron absorption occurs in the
(&) Duodenum
(b) Upper jejunum
(c) Lower jejunum
um
10.(;1?)atll:zphysiologic basis of which of the following conditions is associated with
damage to the myenteric plexus?
) Achalasia B
(b) Acute pancreatilis
(c) Chronic pancreatilis
(d) Sprue
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