17123.In a cardiac output of 5250 ml/minute, with 75 heart beats per minute, the stroke volume is
80 ml
70 ml
60 ml
55 ml
17126.In ECG, P-R interval corresponds to
Time interval between onset of ventricular contraction
Time delay in A-V node
S-A nodal conduction time
Increased ventricular contraction
17127.In higher vertebrates, SA node helps in
Opening of tricuspid valve
Initiation of heart beat
Conduction of blood
Opening of bicuspid valve
17128.The deposition of lipids on the wall lining the lumen of large and medium sized arteries is referred to as
Osteoarthritis
Osteoporosis
Stokes – Adams Syndrome
Atherosclerosis
17129.Consider the following statements about biomedical technologies:
(a) During open heart surgery blood is circulated in the heart-lung machine
(b) Blockage in coronary arteries is removed by angiography(c) Computerised Axial Tomography (CAT) shows detailed internal structure as seen in a section of body
(d) X-ray provides clear and detailed images of organs like prostate glands and lungs
Which two of the above statements are correct?
(a) and (b)
(b) and (d)
(c) and (d)
(a) and (c)
17130.Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?
Peak P and Peak R together – systolic and diastolic blood pressures
Peak P – Initiation of left atrial contraction only
Complex QRS – One complete pulse
Peak T – Initiation of total cardiac contraction
17131.Which type of white blood cells are concerned with the release of histamine and the natural anti coagulant heparin?
Monocytes
Neutrophils
Basophils
Eosinophils
17133.What is true about RBCs in humans?
They do not carry CO2 at all
They carry about 20-25 percent of CO2
They transport 99.5 percent of O2
They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma
17134.If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
The flow of blood into the pulmonary artery will be reduced
The flow of blood into the aorta will be slowed down
The pacemaker will stop working
The blood will tend to flow back into the left atrium
17135.The cells lining the blood vessels belong to the category of
Columnar epithelium
Connective tissue
Smooth muscle tissue
Squamous epithelium
17136.In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
Pressure difference between the post caval and atrium
Pushing open of the venous valves
Suction pull
Stimulation of the sino auricular node
17137.The most active phagocytic white blood cells are:
Neutrophils and monocytes
Neutrophils and eosinophils
Lymphocytes and macrophages
Eosinophils and lymphocytes
17138.In normal blood pressure of 120/80 mm Hg, the numerator represents
Diastolic pressure
Systolic pressure
Pulse pressure
Cardiac index
17139.To obtain a standard ECG, a patient is connected to the machine with three electrodes
One to each wrist and to the left ankle
One to each ankle and to the left wrist
One to each wrist and to the left chest region
One to each ankle and to the left chest region
17140.The blood does not clot inside the body because of :
Oxygenation of blood
Movement of blood
Heparin in blood
Absence of fibrinogen in blood
17141.Which is the correct sequence of arrangement of types of W.B.C. in decreasing order in terms of number per mm3 of human blood?
Eosinophils > Basophils > Neutrophils
Basophils > Eosinophils > Neutrophils
Neutrophils > Eosinophils > Basophils
Eosinophils > Neutrophils > Basophils
17143.When body tissues are injured resulting in the loss of blood, the process of blood clot begins and the blood platelets release
Fibrinogen
Thrombin
Prothrombin
Thromboplastin
17144.If one litre of water is introduced in human blood, then
BMR decreases
BMR increases
RBC collapses and urine production increases
RBC collapses and urine production decreases
17145.Value of cardiac output is
Auricular volume × ventricular volume
Stroke volume × Rate of heart beat
Blood pumped in one minute
Both B and C
17146.Blood vessels taking blood from lungs to heart are
Cardiac veins
Pulmonary arteries
Cardiac arteries
Pulmonary veins
17147.The vein that does not directly open into the heart is :
Pulmonary vein
Postcaval vein
Precaval vein
Posterior mesenteric vein
17148.Muscles which help in circulation of blood of Cockroach are
Cardiac muscles
Dartos muscles
Detrusor muscles
Alary muscles
17149.Among the following stem cells, which are found in the umbilical cord?
Cord blood stem cells
Adult stem cells
Embryonic stem cells
All of the above
17150.The thread like tendons of papillary muscles inserted upon the flaps of tricuspid and bicuspid valves are
reticulate fibres
yellow elastin fibres
collagen fibres
chordae tendinae
17151.Maximum amount of oxygen is exchanged from the blood in the
capillaries surrounding tissue cells
capillaries surrounding the alveoli
left auricle of the heart
arteries of the body
17152.During ventricular systole
Oxygenated blood is pumped into the pulmonary artery and deoxygenated blood is pumped into the artery.
Oxygenated blood is pumped into the aorta and deoxygenated blood is pumped into the pulmonary artery
Oxygenated blood is pumped into the pulmonary vein and deoxygenated blood is pumped into the pulmonary artery.
Oxygenated blood is pumped into the aorta and deoxygenated blood is pumped into the pulmonary vein.
17153.
Given below are four statements (a-d) regarding human blood circulatory system
(a) Arteries are thick-walled and have narrow lumen 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?
(a) and (b)
(a) and (d)
(b) and (c)
(c) and (d)
17154.An artificial pace-maker is implanted subcutaneously and connected to the heart in patients
having 80% blockage of the three main coronary arteries
with irregularity in the heart rhythm
having a very high blood pressure
suffering from arteriosclerosis
17155.The following are the branches of dorsal aorta:
I. Intercostal
II. Phrenic
III. Coeliac
IV. Anterior mesenteric
V. Posterior mesenteric
Of these which set of arteries supply the blood to the glands of digestive system?
IV and V
III and IV
I and II
II and III
17158.In which of the following disorders, blood has a defective hemoglobin?
Hematoma
Hematuria
Hemophilia
Sickle cell anemia
17159.Thromboplastin required for blood clotting at the place of injury is released by
blood platelets
eosinophils
neutrophils
lymphocytes
17160.In which one of the following pair the two items mean one and the same thing?
Leucocytes — lymphocytes
SA node — pace maker
Malleus — anvil
Haemophilia — blood cancer
17161.Lead concentration in blood is considered alarming if it is
10 μg/100 ml
4-6 μg/100 ml
30 μg/100 ml
20 μg/100 ml
17162.Rh –ve person donated blood to Rh +ve person for the second time. Then,
Rh –ve person will die.
Rh +ve person will die.
Rh +ve blood starts reacting to Rh –ve blood.
Nothing happens to Rh +ve person.
17163.The valves which allow blood to flow from the ventricles into the arteries and not in the opposite direction are
Semilunar valve and tricuspid valve
Bicuspid and tricuspid valve
A.V valve (Atrioventricular valve) and semilunar valve
Aortic valve and mitral valve
17164.Which of the following matches correctly?
Pulmonary artery - Carries deoxygenated blood to the lungs
Superior vena cava - Receives deoxygenated blood from the lower body and organs
Inferior vena cava - Receives deoxygenated blood from the head and body
Hepatic artery - Carries deoxygenated blood to the gut
17165.Which of the following sequences is truly a systemic circulation pathway?
Right ventricle → pulmonary aorta → tissues → pulmonary veins → left auricle
Left auricle → left ventricle → aorta → arteries → tissues → veins → right atrium
Left auricle → left ventricle → pulmonary aorta → tissues → right auricle
Right auricle → left ventricle → aorta → tissues → veins → right auricle
17166.Which one is correct?
Blood = Plasma + RBC + WBC + Blood platelets
Lymph = Plasma + RBC + WBC
Neuron = Cyton + Dendrite + Axon + Synapse
Plasma = Blood - lymphocytes
17167.Which one of the following is a matching pair?
Pulsation of the radial artery - values in the blood vessels
Dup - Sudden opening of semilunar valves at the beginning of ventricular diastole
Lubb - Sharp closure of AV valves at the beginning of ventricular systole
Initiation of the heart beat - Purkinje fibres
17168.Which one of the following sentences is wrong?
Small arteries are called arterioles.
When arterioles reach the capillaries blood pressure drops.
Blood pressure is lower in the arteries than in the arterioles.
Small arterioles regulate the flow of blood into each capillary.
17169.'Dup' sound is produced during closure of
Semilunar valves
Bicuspid valve
Tricuspid valve
Both B and C
17170.A fully mature human RBC has
A nucleus
No nucleus
Nucleus may or may not be present
None of the above
17171.A portion of cardiovascular system that transports oxygen depleted blood from the heart to lungs and brings oxygenated blood back to heart is
Pulmonary circulation
Coronary circulation
Systemic circulation
Single circulation system