17223.Mitral/Bicuspid valve connects
Left atrium and left ventricle
Left atrium and right ventricle
Right atrium and left ventricle
Right atrium and right ventricle
17225.Number of RBC/mm3 in healthy female is
4.5 – 5.0 million
5.5 – 6.0 million
3.5 – 4.0 million
6.5 – 7.0 million
17226.Bundle of His is a network of
Nerve fibres distributed in ventricles
Muscle fibres found only in the ventricle wall
Muscle fibres distributed throughout the heart walls
Nerve fibres found throughout the heart
17227.Pace maker is
Instrument for measuring heart beats
Instrument for measuring pulse rate
Auriculo-ventricular node that provides impulse for heart beat
Sinu-auricular node that provides impulse for heart beat.
17230.Origin of heart beat and its conduction is represented by
AV node – Bundle of His – SA node – Purkinje fibres
SA node – Purkinje fibres – AV node – Bundle of His
Purkinje fibres – AV node – SA node – Bundle of His
SA node – AV node – Bundle of His – Purkinje fibres
17231.Oval depression of fossa is observed over
interatrial septum
interventricular septum
right auriculo-ventricular septum
left auriculoventricular septum
17233.Oxygenated blood from lungs enters heart through
Pulmonary vein
Pulmonary artery
Coronary system
Coronary vein
17235.Pace maker is situated in heart
In the wall of right atrium
On interauricular septum
On interventricular septum
In the wall of left atrium
17236.What is true about vein?
All veins carry deoxygenated blood
All veins carry oxygenated blood
They carry blood from organs towards heart
They carry blood from heart towards organs
17239.Wall of blood capillary is formed of
Haemocytes
Parietal cells
Endothelial cells
Oxyntic cells
17240.Pericardial fluid is secreted by
Myocardium
Perietal peritoneum
Visceral peritoneum
None of the above
17241.Pericardial space in cockroach is regularly altered by muscles
Ciliary
Alary
Circular
Longitudinal
17242.Pulmonary artery differs from pulmonary vein in having
Thick wall
Thin wall
Valves
Both B and C
17243.Pulmonary artery drains deoxygenated blood from
Right ventricle
Right atrium
Left atrium
Left ventricle
17244.Pulmonary trunk and aorta are attached by
Chordae tendinae
Ligamentum arteriosus
Coronary sulcus
Pericardium
17246.Pulse pressure is
Diastolic pressure
Systolic pressure
Difference between B and A
Pressure in great veins
17247.Purkinje fibres arise from
Apex of ventricles
Middle of ventricles
Anterior part of auricles
Posterior part of auricles
17249.Coronary heart disease is due to
Streptococci bacteria
Inflammation of pericardium
Weakening of the heart valves
Insufficient blood supply to the heart muscles
17250.Ridges present in the ventricles are
Columnae Carneae
Papillary muscles
Chordae tendineae
Musculi pectinati
17251.Right atrium receives blood from
Sinus system
Pulmonary veins
Inferior vena cava
Superior and inferior venae cavae
17252.SA node is located
Upper lateral wall of left atrium
Lower lateral wall of left atrium
Upper lateral wall of right atrium
Lower lateral wall of right atrium
17253.Sympathetic nervous system
Decreases heart beat
Increases heart beat
Not related to heart beat
Controls heart beat
17255.People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude
there is more UV radiation which enhances RBC production
people eat more nutritive food, therefore more RBCs are formed
people get pollution-free air to breathe and more oxygen is available
atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
17256.Systolic pressure is 120 mm Hg and diastolic pressure is 80 mm Hg, the pulse pressure is
120 x 80 = 9600 mg Hg
120 + 80 = 200 mm Hg
120 – 80 = 40 mm Hg
120 / 80 = 1.5 mm Hg
17257.The difference between systolic and diastolic pressure in human is
40 mm Hg
80 mm Hg
120 mm Hg
200 mm Hg
17258.The heart muscles are
Striated and voluntary
Striated and involuntary
Smooth and voluntary
Smooth and involuntary
17259.The impulse generating (pacemaker) tissue located in the right atrium of the heart is
SA node
AV node
Bundle of His
Purkinje fibres
17260.The most active phagocytic white blood cells are
Eosinophils and lymphocytes
Neutrophils and monocytes
Neutrophils and eosinophils
Lymphocytes and macrophages
17261.The opening of inferior vena cava into right auricle is regulated by
Semilunar valve
Valve of Thebesius
Eustachius valve
none of the above
17262.The role of pacemaker in heart is to
initiate heart beat
control blood pressure
control atherosclerosis
purify blood
17263.Hardening of the arteries due to deposition of cholesterol is called
Rhinitis
Atherosclerosis
Thrombosis
Stenosis
17264.The sequence of cardiac cycle is
Atrial systole – Ventricular systole – Joint diastole
Diastole – Atrial systole – Ventricular diastole
Atrial systole – Ventricular diastole – Ventricular diastole
Ventricular diastole – Diastole – Ventricular systole – Atrial systole
17265.Deoxygenated blood from wall of heart is carried by
Coronary sinus
Inferior vena cava
Superior vena cava
Pulmonary artery
17267.Tricuspid valve is present between
left atrium and left ventricle
right and left atria
right and left ventricles
right atrium and right ventricle
17268.Valves occur in
arteries, veins and auricles
Atria, ventricles and veins
Arteries, veins and ventricles
SA node, AV node and veins
17269.Which one of the following sentences is wrong?
Monocytes can make up about 25% of circulating white blood cells.
The largest of the white blood cells are the monocytes.
Monocytes may survive for several months.
The spleen stores monocytes.
17271.Typical 'lubb-dup' sounds heard in heart beat are due to
Closing of bicuspid and tricuspid valves
closing of semilunar valves
Blood under pressure through aorta
Closure of bicuspid-tricuspid valves followed by semilunar valves