CIRCULATORY SYSTEM
1.
Poikilothermic (cold
blooded) or exothermic animals are those in which
(a) Body
freezes (b) Body temperature remains constant
(c) Body
temp. changes according to surroundings (d) None of the above
2.
An open circulatory
system occurs in
(a) Man (b) Reptiles (c) Animals (d) Insects
3.
William Harvey is known
for the discovery of
(a) Blood
transfusion (b) Blood clotting (c) Blood circulation (d) Blood
purification
4.
Which one of the
following does not have an open circulatory system
(a) Chelone (b) Cockroach (c) Frog's tadpole (d) (a) and (b)
both
5.
In Pheretima lymph
glands produces
(a) Phagocytic
cells (b) Lymphocytic cells (c) Amoebocytic
cells (d) Oxyntic cells
6.
How many lateral hearts
are in pheretima
(a) 4 (b) 8 (c) 16 (d) 12
7.
Four pairs of pulsatile
heart in pheretima are located in seg
(a) 7,
9, 12 and 13 (b) 11, 14, 17 and 18 (c) 10, 13, 16 and
17 (d) 4, 5, 10 and 13
8.
Open circulatory system
is observed in
(a) Cockroach (b) Frog (c) Fish (d) Reptiles
9.
Single circuit circulatory
system is characteristic of
(a) Fishes (b) Amphibians (c) Aves (d) Mammals
10.
Double circuit
circulation is seen in
(a) Humans
and rabbit (b) Pigeon and rat (c) Lizard and crocodile (d) All of the above
11.
Heart beat can be
recorded and displayed as
(a) ECG (b) EEG (c) ERG (d) EMG
12.
Innervation of heart in
the intact animals is primarily meant for
(a) Initiation
of heart beat (b) Regulation of heart beat
(c) Release
of acetylcholine only (d) Release of adrenalin only
13.
Purkinje's fibres are
special types of
(a) Muscle
fibres located in heart (b) Nerve fibres located in cerebrum
(c) Connective
tissue fibres joining one bone to another bone (d)Sensory fibres extending from
retina into optic nerve
14.
Identify the cardiac
inhibitor
(a) Y-aminobutyric acid (b) 5'
Hydroxytryptamine (c) Adrenaline (d) Acetylcholine
15.
The first heart sound is
(a) 'Lubb'
sound at the end of systole (b) 'Dub' sound at the end of systole
(c) 'Lubb'
sound at the beginning of systole (d) 'Dub' sound at the beginning of systole
16.
Regulation of heart beat
in mammals is due to
(a) Presence
of excess of oxygen in blood (b) The presence of pacemaker in the heart
(c) The
presence of thyroxin in blood (d) The volume of blood in the circulatory system
17.
Pace maker of the heart
is situated
(a) In
wall of right atrium close to eustachian valve (b) On intra-auricular septum
(c) On
inter-venticular septum (d) In wall of left atrium close to the opening of
pulmonary veins
18.
Stimulation of the vagus
nerve will make the heart beat
(a) Faster (b) 70 times / minute (c) Slower (d) Normal
19.
During systole
(a) Auricles
and ventricles contract simultaneously (b) Auricles and ventricles contract separately
(c) Only
auricles contract (d) Only ventricles contract
20.
What is the maximum
efficiency of heart
(a) 10
– 15 % (b) 20 – 25 % (c) 40 – 60% (d) 100%
21.
Blood leaving and moving
to heart has higher concentration of
(a) Glucose (b) Urea (c) Bile (d) Erythrocytes
22.
If the vagus branch of
frog is stimulated, the heart will show
(a) Stoppage
of heart beat (b) Decreased
heart beat (c) Increased heart beat (d) No change
23.
Artificial pace maker is
transplanted in
(a) Inter
ventricular septum (b) Below the collar bone (c) Inter auricular
septum (d) Right auricle
24.
The rate of heart beat
is controlled by
(a) CNS (b) SN (c) CN (d) Autonomic nervous system
25.
Which of the animal has
only deoxygenated blood in its heart
(a) Scoliodon (b) Rabbit (c) Pigeon (d) Snake
26.
Blood returns from lungs
to heart through
(a) Right
auricle (b) Right ventricle (c) Left
ventricle (d) Left auricle
27.
In the heart of mammal
the bicuspid valve is situated between
(a) Left
auricle and left ventricle (b) Post caval and
right caval
(c) Right
auricle and left auricle (d) Right ventricle
and pulmonary aorta
28.
Nature of valves in the
heart is
(a) Membranous (b) Muscular (c) Tendinous (d) Ligamentous
29.
Chordae tendinae are
found in
(a) Ventricle
of heart (b) Atria of heart (c) Joints (d) Ventricle of brain
30.
Covering of heart is
called
(a) Pericardium (b) Peritoneum (c) Perineurium (d) Periostium
31.
The middle layer of
heart is known as
(a) Endocardium (b) Pericardium (c) Epicardium (d) Myocardium
32.
Post caval in right
auricle is guarded by
(a) Eustachian
Valve (b) Bicuspid valve (c) Tricuspid valve (d) Atrio-ventricular
valve
33.
Bicuspid valve is also
called as
(a) Mitral
valve (b) Eustachean valve (c) Pulmonary
valve (d) Ventricular valve
34.
Largest heart is found
in
(a) Elephant (b) Giraffe (c) Crocodile (d) Lion
35.
Which of the following
has the thickest wall
(a) Left
auricle (b) Left ventricle (c) Right auricle (d) Right ventricle
36.
The blood returning to
the heart from lungs via pulmonary vein has more
(a) RBC
per ml of blood (b) Haemoglobin per ml of blood (c)Oxygen per ml of blood (d)Nutrient per ml of blood
37.
Which of the following
structure is absent in rabbit's heart
(a) Left
auricle (b) Left ventricle (c) Sinus venosus (d) Pace maker
38. Heart
of elephant is
(a) Neurogenic (b) Myogenic (c) Both (a) and (b) (d) None of these
39.
Heart of prawn carries
(a) Oxygenated
blood (b) Deoxygenated blood (c) Mixed blood (d) No blood
40.
In frog's heart, there
are muscular ridges which consist of fibres called
(a) Myonemes (b) Purkinjee fibres (c) Telodendria (d) Columneae carnae
41.
In an ECG, QRS wave
represent
(a) Activity of pace setter (b) Auricular relaxation (c) Ventricular contraction (d) Ventricular relaxation
42.
In an old man's ECG, T-waves shall be
(a) Flat (b) Inverted (c) Very prominent (d) Same as in
adults
44.
What is the end
diastolic volume of blood in a normal adult heart
(a) 50
ml (b) 70 ml (c) 90 ml (d) 110 ml
45.
Which of the following
cardiac effects can be observed if the potassium concentration is increased two
to three times the normal value
(a) Weakness
of heart (b) Abnormal rhythm (c) Death (d) All the above
46.
In all the leads of ECG,
all following are positive waves except
(a) P (b) Q (c) R (d) T
47.
Which of the following
is a repolarization wave
(a) P (b) T (c) QRS (d) None of these
48.
ECG records
(a) Electric
current of the body (b) Potential differences
(c) Pulse
rate (d) Quantity of blood pumped per minute
49.
Sinu-atrial node is
innervated by branches of
(a) V
cranial nerve (b) X cranial nerve
(c) IX
cranial nerve (d) VI cranial nerve
50.
In an ECG, QRS wave
represent
(a) Activity
of pace setter (b) Auricular relaxation (c) Ventricular
contraction (d) Ventricular relaxation
51.
In an old man's ECG, T-waves shall be
(a) Flat (b) Inverted (c) Very prominent (d) Same as in
adults
53.
What is the end
diastolic volume of blood in a normal adult heart
(a) 50
ml (b) 70 ml (c) 90 ml (d) 110 ml
54.
Which of the following
cardiac effects can be observed if the potassium concentration is increased two
to three times the normal value
(a) Weakness
of heart (b) Abnormal rhythm (c) Death (d) All the above
55.
In all the leads of ECG,
all following are positive waves except
(a) P (b) Q (c) R (d) T
56.
Which of the following
is a repolarization wave
(a) P (b) T (c) QRS (d) None of these
57.
ECG records
(a) Electric
current of the body (b) Potential differences
(c) Pulse
rate (d) Quantity of blood pumped per minute
58.
Sinu-atrial node is
innervated by branches of
(a) V
cranial nerve (b) X cranial nerve
(c) IX
cranial nerve (d) VI cranial nerve
59.
Ventricular contraction
is preceded by atrial contraction by what duration
(a) 1
second (b) 1/2 second (c) 1/4 second (d) 1/6 second
60.
Uremia disease is
associated with
(a) High
serum cholesterol (b) High blood glucose (c) High blood urea (d) Rh factor in blood
61.
Heart beat and pulse
rate is increased under conditions of
(a) Psychogenic
stress (b) Fever (c) Muscular exercise (d) All of the above
62.
The heart beat increases
at the time of interview due to
(a) Corticotrophic
hormone (b) Hyper secretion of renin
(c) Secretion
of adrenaline (d) Antidiuretic
hormone secretion
63.
Pulse can easily be
detected on superficial artery like that of
(a) Diaphragm (b) Thigh (c) Wrist (d) Humerus
64.
An adult human with
average health has systolic and diastolic pressure as
(a) 80
mm Hg and 88 mm Hg (b)70 mm Hg and 120 mm Hg (c)120 mm Hg and 80 mm Hg (d)50 mm Hg and 80 mm Hg
65.
The thickening of walls
of arteries are called
(a) Arthritis (b) Aneurysm (c) Arteriosclerosis (d) Both (a) and
(b)
66.
Putting adrenaline on
the heat will cause the heart beat to
(a) Retard (b) Accelerate (c) Produce louder sound (d) Stop
67.
Average cardiac output
is
(a) 4
litres per minute (b) 6.3 litres per minute (c) 5.3 litres per
minute (d) 7.3 litres per minute
68.
Heart beats are affected
by
(a) Carbon
dioxide (b) Oxygen (c) Vagus nerve (d) All the above
69.
We feel sleepy just
after taking meals because
(a) Blood
pressure increases (b) Blood
pressure decreases (c) Body weight increases (d) We feel lithargic
70.
The pulse beat is
measured by the
(a) Artery (b) Capillary (c) Vein (d) None
71.
Below normal heart beat
is called
(a) Bradycardia (b) Tachycardia (c) Hyperpiesis (d) All of these
72.
Blood pressure increases
and heart rate decreases in response to
(a) Exercise (b) Haemorrage
(c) Exposure
to high altitude (d) Increased intracranial pressure
74.
Starling's law is
related to
(a) Venous
return to heart (b) Force of heart beat (c) Frequency of
heart beat (d) Peripheral resistance
75.
Oxygen-fick method is
used to measure
(a) Blood
pressure (b) Cardiac reserve (c) Cardiac
output (d) Capillary blood flow
76.
Plethysomograph is used
to measure
(a) Velocity
of blood (b) Mean volume flow
(c) Excitability
of heart (d) Conducting of stimuli in heart
77.
Identify the main
systemic artery which originates from the left ventricle
(a) Carotid (b) Pulmonary (c) Jugular (d) Aorta
78.
The artery which
supplies blood to the diaphgram is known as
(a) Cardiac
artery (b) Phrenic artery (c) Lingual artery (d) Lumber
artery
80.
Femoral artery supplies
blood to
(a) Hind
limb (b) Rectum (c) Dorsal region of thigh (d) Ventral region thigh
81.
Iliac artery carries
blood to the
(a) Lungs (b) Ileum (c) Hind limbs (d) Brain
82.
The wall of blood
capillaries is made up of
(a) Mesenchymal
cells (b) Connective tissues (c) Endothelial cells (d) Fibrocytes
83.
Which of the following
has no muscular wall
(a) Artery (b) Vein (c) Arteriol (d) Capillary
84.
Select the correctly
matched pair
(a) Papillary
muscles – Blinking of eye lids (b) Carotid artery – Oxygenated blood to heart
(c) Blood
vessels of diaphragm – Phrenic vessels (d) Systole – Causes entry of blood in heart
85.
Smallest lumen blood
vessel in the body is
(a) Capillary (b) Artery (c) Vein (d) Venacava
86.
In which region the
lymphatic system and blood circulatory system meet
(a) Liver
(b) Precaval (c) Pulmonary artery (d) Systematic arch
87.
The process of blood
clot formation within the circulatory system is
(a) Thrombosis (b) Thrombocytes (c) Thrombin (d) Thrombocytopenia
88.
Blood vessels that
contain valves are called
(a) Arteries (b) Veins (c) Capillaries (d) All the above
89.
Thrombin occurs in the
vertebrates in
(a) The
liver and is important for bile secretion (b) The stomach and digests proteins
(c) The
blood and is important for clotting (d) The blood and gives it red colour
90.
Blood leaving lungs is
rich in
(a) Oxygen (b) Haemoglobin (c) Carbon dioxide (d) More number of
RBC
91.
The artery can be
distinguished from the vein in having
(a) Thicker
walls (b) More blood cells (c) More plasma (d) Larger cavity
92.
A vein differs from the
artery in having
(a) Narrow
lumen (b) Strong cuticular and muscular wall
(c) Valves
to control direction of flow (d) Dark pigmented wall
93.
Oxygenated blood is
carried by
(a) Pulmonary
vein (b) Pulmonary artery (c) Renal vein (d) Hepatic portal vein
94.
Blood to the heart is
brought by the venous system by
(a) Innominate
and anterior abdominal (b) Subclavian alone
(c) Vena
cavae (d) Anterior abdominal alone
95.
Hepatic portal system
starts from
(a) Digestive
system to liver (b) Kidney to
liver (c) Liver to heart (d) Liver to kidney
96.
Digested food materials
entering the blood reach the heart by
(a) Hepatic
portal vein, hepatic vein and post caval (b) Hepatic vein and post caval
(c) Hepatic
portal vein and post caval (d) Hepatic portal vein and hepatic vein
97.
Blood circulation that
starts in capillaries and ends in capillaries is called
(a) Portal
circulation (b) Hepatic circulation (c) Cardiac
circulation (d) None
98.
Renal portal system is
absent in
(a) Rabbit (b) Frog (c) Toad (d) Salamander
99.
A portal system is
present in
(a) Liver (b) Hypothalamus (c) Pituitary (d) All of the above
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