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WorksheetsPhysiology
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
Conduction velocity is maximum in
a)
Ia nerve fibre
b)
Ib nerve fibre
c)
II nerve fibre
d)
IV nerve fibre
2.
Blood-brain barrier is formed by
a)
Astrocytes
b)
Schwann cells
c)
Oligodendrocytes
d)
Microglia
3.
Hyperpolarization during action potential can be explained by
a)
Opening of Na+ channel
b)
Closure of Na+ channel
c)
Opening of K+ channel
d)
Slow closure of K+ channel
4.
All of the following are associated with thin filament except
a)
Tropomyosin
b)
Troponin – C
c)
Troponin – T
d)
Titin
5.
Interaction between actin and myosin is prevented by
a)
troponin I
b)
troponin T
c)
troponin C
d)
tropomyosin
6.
A stimulus in the form of slowly rising current will not generate action potential. This is known as
a)
adaptation
b)
accomodation
c)
refractoriness
d)
tetanus
7.
Botulinum toxin will
a)
Inhibit the binding of acetylcholine to post- synaptic receptor
b)
Inhibit the release of acetylcholine from pre-synaptic nerve terminal
c)
Inhibit the entry of Ca++ in pre-synaptic nerve terminal
d)
Inhibit acetylcolinestrase
8.
SGLT is an example of
a)
facilitated diffusion
b)
ion channel
c)
primary active transport
d)
secondary active transport
9.
4th heart sound is because of
a)
Opening of aortic and pulmonary valve
b)
Opening of mitral and tricuspid valve
c)
Atrial contraction
d)
Ventricular contraction
10.
‘A’ wave of JVP is because of
a)
atrial contraction
b)
bulging of tricusptd valve durinf ventricular contraction
c)
ventricular ejection
d)
opening of tricuspid valve
11.
Normal cardiac index is
a)
5.4 L/min
b)
3.2 L/min/m2 of body surface area
c)
0.08 L/min/Kg of body weight
d)
250 ml/min
12.
Dicrotic notch is because of
a)
Opening of aortic valve
b)
Closure of aortic valve
c)
Opening of mitral valve
d)
Closure of mitral valve
13.
Prolonged QRS duration signifies
a)
AV nodal block
b)
Bundle branch block
c)
Long action potential duration of atrium
d)
Long action potential duration of ventricle
14.
All will increase during exercise except
a)
cardiac output
b)
venous return
c)
heart rate
d)
total peripheral resistance
15.
Cushing’s phenomenon is associated with
a)
Low BP & Low HR
b)
High BP & High HR
c)
Low BP & High HR
d)
High BP & Low HR
16.
If diameter of a blood vessel is doubled, then the flow of blood will become
a)
2 times
b)
4 times
c)
8 times
d)
16 times
17.
All are true about pulmonary surfactant except
a)
It is secreted by type-2 pneumocytes
b)
It reduces surface tension
c)
It reduces compliance
d)
It prevents the collapse of lung
18.
all are less in upper part of lung except
a)
ventilation
b)
perfusion
c)
PO2
d)
alveolar size
19.
CO poisoning is
a)
hypoxic hypoxia
b)
anemic hypoxia
c)
stagnant hypoxiahistotoxic hypoxia
20.
Entry of oxygen in RBC will lead to release of H+ from Haemoglobin. His is known as
a)
Bohr's effect
b)
heldane effect
c)
chloride shift
d)
oxygenation of haemoglobin
21.
Normal PaO2 is
a)
104 mmHg
b)
95 mmHg
c)
46 mmHg
d)
40 mmHg
22.
All are true about peripheral chemo-receptors except
a)
They are present in carotid body and aortic body
b)
They can sense O2, CO2 and H+
c)
Their stimulation lead to increase in ventilation
d)
Their stimulation lead to decrease in BP
23.
Increase in all will shift O2 - hemoglobin dissociation curve to the right except
a)
CO2
b)
pH
c)
temperature2-3 DPG
24.
All will increase acid secretion in stomach except
a)
gastrin
b)
histamine
c)
acetylcholine
d)
somatostatin
25.
All will increase gastric emptying except
a)
parasympathetic stimulation
b)
stomach distension
c)
gastrin
d)
duodenal hyperosmolarity
26.
Bile acids are maximally reabsorbed from
a)
jejunum
b)
proximal ileum
c)
terminal ileum
d)
colon
27.
H+ is secreted in stomach from
a)
chief cells
b)
parietal cells
c)
G-cells
d)
ECL cells
28.
All are the functions of CCK except
a)
Gall bladder contraction
b)
Pancreatic secretion rich in HCO3-
c)
Inhibition of gastric motility
d)
Decrease appetite in hypothalamus
29.
Enterokinase activates
a)
amylase
b)
lipase
c)
trypsinogen
d)
nuclease
30.
All are true about basal electrical rhythm (BER) except
a)
It is generated by interstitial cells of Cajal
b)
It is different in different parts of intestine
c)
BER will not generate the contraction by itself
d)
Hormone motilin initiates BER
31.
Which of the following anterior pituitary hormone will lead to pigmentation
a)
GH
b)
ACTH
c)
prolactin
d)
TSH
32.
All are the actions of thyroid hormone except
a)
Increased contractility of heart
b)
Fat synthesis
c)
protein lysis
d)
loss of sleep
33.
All are true about vitamin – D except
a)
25-hydroxylation occurs in liver
b)
1-hydroxylation occurs in kidney
c)
24-hydroxylation occurs in liver
d)
1-25 (OH)2 D3 absorbs Ca++ and PO4 from intestine
34.
Para-thyroid hormone will
a)
Increase plasma Ca++ and PO4
b)
Decrease plasma Ca++ and PO4
c)
Increase plasma Ca++ and decrease PO4
d)
Decrease plasma Ca++ and increase PO4
35.
Which of the following represents Cushing’s disease
a)
High ACTH & High cortisol
b)
Low ACTH & Low cortisol
c)
High ACTH & Low cortisol
d)
Low ACTH & high Cortisol
36.
All are the features of Conn’s syndrome except
a)
increased BP
b)
hyperkelemia
c)
alkalosis
d)
more plasma Na+
37.
Which hormone acts via intra-nuclear receptors
a)
Growth hormone
b)
Thyroid hormone
c)
cortisol
d)
Epinephrine
38.
formation of spermatozoa from spermatgonia will take approximately
a)
24 days
b)
48 days
c)
74 days
d)
105 days
39.
Function of HCG (Human Chorionic Gonadotrophin) is very similar to
a)
FSH
b)
LH
c)
estrogen
d)
Progesterone
40.
Implantation usually occurs after
a)
2-3 days after fertilization
b)
5-7 days after fertilization
c)
10-12 days after fertilization
d)
14-16 days after fertilization
41.
All of the following actions of testosterone are mediated via dihydro-testerone except
a)
Action on prostate gland
b)
Male baldness
c)
External genital formation during development
d)
Anabolic action on muscle
42.
Ovulation is because of
a)
FSH surge
b)
LH Surge
c)
estrogen surge
d)
progesterone surge
43.
All are the actions of progesterone except
a)
Secretary changes in breast
b)
Secretary changes in uterus
c)
Increase body temperature
d)
Increase uterine contractility
44.
Corpus luteum secretes
a)
Estrogen
b)
Progesterone
c)
Both
d)
None
45.
Heparin will inhibit all of the following factors except
a)
XII
b)
XI
c)
IX
d)
VII
46.
Clotting through extrinsic pathway will occur in approximately
a)
12 sec
b)
40 sec
c)
1-2 min
d)
2-8 min
47.
A person has blood group ‘A’. his blood will have
a)
Antigen – A and antibody – B
b)
Antigen – B and antibody – A
c)
Antigen – A only
d)
Antibody – A only
48.
Cell mediated immunity is mediated through
a)
Neutrophil
b)
B-Lymphocytes
c)
T-Lymphocytes
d)
Basophil
49.
All are vitamin – K dependent factors except
a)
VII
b)
VIII
c)
X
d)
Prothrombin
50.
Intrinsic pathway starts with activation of
a)
XII
b)
XI
c)
VII
d)
Thromboplastin
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