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Circulation

The document discusses the circulatory system and components of blood. It provides details on the heart, blood vessels, blood groups, platelets, plasma proteins, and the role of different components in the body. Multiple choice questions are provided at the end testing knowledge of the circulatory system and heart.

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Dr. Prakash Sah
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0% found this document useful (0 votes)
59 views134 pages

Circulation

The document discusses the circulatory system and components of blood. It provides details on the heart, blood vessels, blood groups, platelets, plasma proteins, and the role of different components in the body. Multiple choice questions are provided at the end testing knowledge of the circulatory system and heart.

Uploaded by

Dr. Prakash Sah
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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The amount of oxygen delivered to tissue by one litre of

blood under strenous condition is approximately

A. 5 ml
B. 50 ml
C. 15 ml
D. 150 ml
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Plasma Proteins
Factor Name
The plasma clotting factors are listed in the
table: I Fibrinogen

II Prothrombin

III Tissue thromboplastin

IV Calcium ions (Ca2+)

V Proaccelerin (Labile factor)

VI Presence has not been proved

VII Proconvertin (stable factor)

VIII Antihaemophilic factor A

IX Antihaemophilic factor B (Christmas factor)

X Stuart-Power factor

XI Plasma thromboplastin antecedent

XII Hageman factor

XIII Fibrin stabilizing factor


Component of blood responsible for producing antibodies is

A. Thrombocytes
B. Monocytes
C. Erythrocytes
D. Lymphocytes
Serum is

A. Plasma without clotting factors


B. Blood without blood cells
C. Blood without clotting factors
D. Blood without RBCs
Which of the following is the largest WBC that destroys
organisms entering the body
A. Eosinophils
B. Basophils
C. Monocytes
D. Acidophils
Lymph
A. Transports oxygen to brain
B. Transports CO2 to lungs
C. Returns interstitial fluid back to heart
D. Contain RBCs, leucocyte and more protein as compared
to blood
For conversion of prothrombin into thrombin, which of the
following is required?
A. Fibrinogen
B. Vitamin K
C. Proconvertin
D. Thrombokinase
If ‘A’ antigen is present on RBCs then the blood group of a
person is
A. A
B. B
C. AB
D. O
Which of the following are cell fragments produced from
megakaryocytes?
A. Neutrophils
B. Lymphocytes
C. Platelets
D. All of these
Select the odd w.r.t characteristic features of human RBCs
A. Biconcave
B. Circular
C. Oval
D. Non nucleated
The most abundant type of cells present in human blood are
A. RBCs
B. Lymphocytes
C. Monocytes
D. Platelets
Erythroblastosis foetalis occurs when a factor from mother
passes into the foetus through the placenta. This factor is
A. Rh antigen
B. Rh antibodies
C. Agglutinins
D. ABO antibodies
Lymph
A. Transports oxygen to brain
B. Transports CO2 to lungs
C. Returns interstitial fluid back to heart
D. Returning RBCs to the lymph nodes
T-lymphocytes mature in
A. Bone marrow
B. Lymph nodes
C. Bursa of fabricius
D. Thymus
The granulocyte to arrive first at the site of an infection is
A. Neutrophil
B. Eosinophil
C. Basophil
D. All of these
In which of the following situations, there is a risk factor for
children acquiring erythroblastosis fetalis?
A. Mother is Rh -ve and father is Rh -ve.
B. Mother is Rh -ve and father is Rh +ve.
C. Mother is Rh +ve and father is Rh +ve.
D. Mother is Rh +ve and father is Rh -ve.
A drop of each of the following, is placed separately on four
slides. Which of them will not coagulate?
A. Blood serum
B. Blood from pulmonary artery
C. Whole blood from pulmonary vein
D. Blood plasma
Match the items given in column I with those in column II
and select the correct option given below.

Column I Column II

A. Fibrinogen i. Osmotic balance

B. Globulin ii. Blood clotting

C. Albumin iii. Defence mechanism

A B C

(a) iii ii i

(b) i ii iii

(c) i iii ii

(d) ii iii i
Body Fluids and Circulation

T
Eosinophil Neutrophil lymphocyte
RBC

Platelets Basophil Monocyte B lymphocyte


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Which of the following is known as natural pacemaker of the
heart?
A. Sinoatrial node
B. Atrio ventricular node
C. Bundle of His
D. Purkinje fibres
All veins carry deoxygenated blood except
A. Renal vein
B. Hepatic vein
C. Hepatic portal vein
D. Pulmonary vein
Papillary muscles occur in
A. Ventricles
B. Auricles
C. Atrioventricular values
D. Pulmonary valves
Given below are four statements (A-D) regarding human
blood circulatory system
A. Arteries are thick-walled and have narrow lumens as
compared to veins
B. Angina is acute chest pain when the blood circulation to
the brain is reduced
C. Persons with blood group AB can donate blood to any
person with any blood group under ABO system
D. Calcium ions play a very important role in blood clotting
Which two of the above statements are correct?

1. A and D
2. A and B
3. B and C
4. C and D
If due to some injury the chords tendinae of the tricuspid
value of the human heart is partially non functional, what will
be the immediate effect?
A. The flow of blood into the pulmonary artery will be
reduced.
B. The flow of blood into the aorta will be slowed down.
C. The pacemaker will stop working
D. The blood will tend to flow back into the left atrium
The most popularly known blood grouping is ABO grouping.
It is named ABO and not ABC, because “O” in it refers to
having:
A. Overdominance of this type on the genes for A and B
types
B. One antibody only - either antu-A or anti-B on the RBCs
C. No antigens A and B on RBCs
D. Other antigens besides A and B on RBCs
Which one of the following plasma proteins is involved in the
coagulation of blood?

A. Fibrinogen
B. An albumin
C. Serum amylase
D. A globulin
Which one of the following is correct?

A. Blood = Plasma + RBC + WBC + Platelets


B. Plasma = Blood - Lymphocytes
C. Serum = Blood + Fibrinogen
D. Lymph = Plasma + RBC + WBC
The duration of the ventricular diastole in a normal cardiac
cycle is
A. 0.3 second
B. 0.5 second
C. 0.4 second
D. 0.7 second
Time interval between the closure of semilunar valve and
closure of AV valve is
A. 0.3 s
B. 0.5 s
C. 0.1 s
D. 0.7 s
A person with antigen A on RBC and antibody ‘B’ in plasma
belongs to blood group
A. A
B. B
C. O
D. AB
Which of the following are in direct contact with AV values
and prevent these from collapsing back into atria?
A. Chordae tendinae
B. Papillary muscles
C. Columnae carnae
D. Musculi pectinati
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1 Cardiac output is

A. Volume of blood pumped by each ventricle in each


cardiac cycle
B. Volume of blood pumped out by each ventricle per
minute
C. 5 litres in a healthy individual
D. Both (B) and (C)
2 Which of the following is mismatched?

A Lub First heart sound associated with


closure of tricuspid and bicuspid
values

B Cardiac output Stroke volume of multiplied by


heart rate

C Dub Second heart sound, due to opening


of semilunar valves

D Duration of cardiac 0.8 seconds


cycle
3 Atrial systole

A. Increases the flow of blood into the ventricles by


70 percent
B. Is due to generation of action potential in AVN
C. Increases the flow of blood into the ventricles by
30 percent
D. Coincides with ventricular systole
4 Purkinje fibres arise from

A. Apex of ventricles
B. Middle of ventricles
C. Anterior part of atria
D. Posterior part of atria
5 Who got the Nobel Prize for the development of ECG?

A. Einthoven
B. Karl Landsteiner
C. William Harvey
D. Frederich Sanger
6 Which one is the first heart sound?

A. ‘Lub’ during closure of semilunar valves


B. ‘Lub’ during closure of atrioventricular valves
C. ‘Dub’ during closure of atrioventricular valves
D. ‘Dub’ during closure of semilunar valves
7 If the T-wave of an ECG is flat, it indicates
A. Heart muscles are receiving insufficient oxygen
B. Enlargement of atria
C. Myocardial infarction
D. All of these
8 In ECG, ST segment is elevated in
A. Acute myocardial infarction
B. Myocardial ischaemia
C. Insufficient supply of oxygen to the heart muscles
D. Both (B) and (C)
9 Which of the following represents systemic
circulation?
A. Left atrium → Lungs → Right atrium
B. Right atrium → Lungs → Right ventricle
C. Left ventricle → Body parts → Right atrium
D. Right ventricle → Body parts → Left atrium
10 ______ supply.supplies oxygenated blood to heart
musculature.
A. Coronary arteries
B. Carotid artery
C. Hepatic artery
D. Coronary sinus
11 Difference between systolic and diastolic blood
pressure is
A. Blood pressure
B. Pulse pressure
C. Cardiac output
D. Pulse
12 The opening of pulmonary vein is without value
because
A. It is a very small aperture
B. It has low blood pressure
C. Its opening is oblique
D. None of these
13 Chordae tendinae in the heart are found in

A. Ventricle
B. Left auricle
C. Right auricle
D. Interventricular septum
14 The hepatic portal vein drain blood to liver from

A. Heart
B. Stomach
C. Kidneys
D. Intestine
15 Blood pressure in the pulmonary artery is
A. Less than that in the venae cavae
B. Same as that in the aorta
C. More than that in the carotid
D. More than that in the pulmonary vein
16 In mammals, which blood vessel would normally carry
largest amount of urea?
A. Hepatic Portal Vein
B. Renal vein
C. Dorsal Aorta
D. Hepatic Vein
17 Given below is the ECG of a normal human. Which one
of its components is correctly interpreted below?

A. Peak P and Peak R together - systolic and diastolic


blood pressures
B. Peak P - Initiation of left atrial contraction only
C. Complex QRS - one complete pulse
D. Peak T - Initiation of total cardiac contraction
18 A person with unknown blood group under ABO
system,has suffered much blood loss in an accident
and needs immediate blood transfusion. His one
friend who has a valid certificate of his own blood
type, offers for donation without delay. What would
have been the type of blood group of the donor
friend?
A. Type A
B. Type B
C. Type AB
D. Type O
19 The haemoglobin content per 100 ml of blood of a
normal healthy human adult is
A. 5 - 11 g
B. 25 - 30 g
C. 17 - 20 g
D. 12 - 16 g
20 Systematic heart is

A. The heart that contracts between stimulation from


nervous system
B. Left auricle and left ventricle in higher vertebrates
C. Entire heart in lower vertebrates
D. The two ventricles together in humans
21 The pacesetter in the heart is called

A. Sino-atrial node (SAN)


B. Atrio-ventricular node (AVN)
C. Purkinje fibres
D. Papillary muscle
22 The correct route which impulse travels in heart is

A. SA node → Purkinje fibres → bundle of his → AV


node → heart muscles
B. SA node → AV node → bundle of His →Purkinje
fibres → heart muscles
C. AV node → bundle of His → SA node → Purkinje
fibres → heart muscles
D. AV node → SA node → Purkinje fibres → bundle of
his → heart muscles
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1 Pain in heart muscle is

A. Angina cardius
B. Angina pericardius
C. Angina pectoris
D. None
2 Blood of which vessel in mammals carries least
percentage of urea
A. Dorsal aorta
B. Renal vein
C. Renal artery
D. Posterior vena cava
3 The correct sequence of layers found in the walls of
arteries from inside outward is
A. Tunica adventitia, tunica interna & tunica media
B. Tunica interna, tunica externa & tunica media
C. Tunica interna, tunica media & tunica externa
D. Tunica media, tunica externa & tunica interna
4 Diapedesis is

A. A movement of amoeboid movement


B. Movement of some WBC to tissue through the wall
of blood capillary to destroy harmful bacteria
C. A type of movement in hydra
D. Filtration process of urea in kidney
5 A portal system is that in which

A. A vein begins from an organ and ends in heart


B. An artery breaks up in an organ & restarts by the
union of its capillaries
C. The blood from gut is brought in to kidneys before
it is poured in to heart
D. A vein breaks up in an organ in to capillaries &
restarts by their union as a new vein in the same
organ
6 Which vessel carries most oxygenated blood

A. Pulmonary artery
B. Pulmonary vein
C. Coronary artery
D. Cerebral artery
7 Heart beat is accelerated by

A. Sympathetic nerves and acetylcholine


B. Cranial nerves and adrenaline
C. Cranial nerves and acetylcholine
D. Sympathetic nerves and epinephrine
8 Which among the following is correct during each
cardiac cycle
A. The volume of blood pumped out by the Rt and Lt
ventricles is same
B. The volume of blood pumped out by the Rt and Lt
ventricles is different
C. The volume of blood received by each atrium is
different
D. The volume of blood received by the aorta and
pulmonary artery is different
9 Deposition of fatty substances in the lining of of
arteries is termed as _____

A. Arteriosclerosis
B. Atherosclerosis
C. Arthritis
D. Angiogenesis
10 What would be the heart rate of a person if the
cardiac output is 5 L, blood volume in the ventricles at
the end of diastole is 100 mL, and at the end of
ventricular systole is 50 mL.
A. 125 beats per minute
B. 50 beats per minute
C. 75 beats per minute
D. 100 beats per minute
11 Name the blood cells, whose reduction in number can
cause clotting disorder, leading to excessive loss of
blood from the body.
A. Erythrocytes
B. Leucocytes
C. Neutrophils
D. Thrombocytes
12 Serum differs from blood in

A. Lacking globulins
B. Lacking albumins
C. Lacking clotting factors
D. Lacking antibodies
13 If the systolic pressure is 120 mmHg and diastolic
pressure is 8- mm Hg, the pulse pressure is _____
A. 120 x 80 = 9600 mmHg
B. 120 + 80 = 200 mmHg
C. 120 - 80 = 40 mmHg
D. 120/80 = 1.5 mmHg
14 Carotid artery supplies

A. Oxygenated blood to lungs


B. Oxygenated blood to intestine
C. Oxygenated blood to brain
D. None of these
15 Hormonal regulation of cardiac activity involves the
hormones ____ and ______, secreted by the _____.
A. Epinephrine, norepinephrine, cortex of adrenal
glands
B. Epinephrine, norepinephrine, medulla of adrenal
glands
C. Thyroxine, calcitonin, thyroid gland
D. Aldosterone, corticosterone, cortex of adrenal
glands
16 The longer heart sound is

A. Lub
B. Dub
C. Both lub and dub are equal
D. Sometimes lub and sometimes (B)
17 In which of the following points pulmonary artery is
different from pulmonary vein?
A. Its lumen is broad
B. Its wall is thick
C. It has valves
D. It does not possess endothelium
18 Which of the following statements is true for lymph?

A. WBCs + serum
B. Blood - RBCs and some proteins
C. RBCs + WBCs + plasma
D. RBCs + proteins + platelets
19 Compared to blood our lymph has

A. Plasma without proteins


B. More WBCs and no RBCs
C. More RBCs and less WBCs
D. No plasma
20 During acute myocardial infarction, which of the
following changes occur in the ECG?
A. Flattened T wave
B. Depressed S-T segment
C. Elevated S-T segment
D. Increases length of PQ interval
21 What would be the heart rate of a person if the
cardiac output is 5 L, blood volume in the ventricles at
the end of diastole is 100 mL and at the end of
ventricular systole is 50 Ml?

A. 125 beats per minute


B. 50 beats per minute
C. 75 beats per minute
D. 100 beats per minute

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