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301.

The granulocyte to arrive first at the site of an infection isA. NeutrophilB. EosinophilC. BasophilsD. All of these

Answer» Correct Answer - A
302.

Blood passes from left ventricle to right atrium. It isA. Pulmonary circulationB. Systemic circulationC. Coronary circulationD. Arterovenous circulation

Answer» Correct Answer - B
Blood passes from left ventricle to right atrium. It is systemic circulation.
303.

The atrium and ventricle of same side are separted by a tick fibrous tissure called theA. Inter-atrial septumB. Inter-ventricular septumC. Atrio-ventricular septumD. Atrio-ventricular valve

Answer» Correct Answer - C
The atrium and ventricle of same side are separted by a think fibrous tissue called the atrio-ventricular septum.
304.

In which of the following pairs the two items mean one and the same thing?A. Malleus-anvilB. SA node-PacemakerC. Leucocytes-lymphocytesD. Haemophilia-blood cancer

Answer» Correct Answer - B
305.

What is lymph node ?

Answer» A lymph node is specialised structure in lymphatic vessel concerned with the filteration of foreign bodies by the lymphocytes.
306.

The principle function of the lymph node in the man isA. Destruction of old RBCB. Destruction of old WBCC. Collection and destruction of pathogens in the bloodD. production of WBC

Answer» Correct Answer - C
307.

Which one of the following is correct?A. Lymph=Plasma+RBC+WBCB. Blood=Plasma+RCB+WBC+PlateletsC. Plasma=Blood+LymphocytesD. Serum=Blood +Fibrinogen

Answer» Correct Answer - B
Lymph= Plasma + WBC
Blood = Plsams + RBC + WBC + Platelets
Plasma = Blood - formed elements
Serum = Plasma - clotting factors
308.

Cold blooded animal with a single circulation isA. MammalB. AmphibianC. ReptileD. Fish

Answer» Correct Answer - D
Cold blooded animal with a single circulation is fish.
309.

The two aurticles are demarcated extrenally from the ventricle by an irregular groove calledA. Inter - auricular septumB. inter - ventricular septumC. Coronary sulcusD. Inter - ventricular groove

Answer» Correct Answer - C
310.

Important function of lymph isA. Transport oxygen to brainB. Trsnsport `CO_(2)` to lungsC. Teturen RBCs to lymph nodesD. Return interstitial fluid to blood

Answer» Correct Answer - D
Important function of lymph is return intersititial fluid to blood.
311.

A blood group does not have any antigen but possesses both a and b antibodies. It isA. AB. OC. BD. AB

Answer» Correct Answer - B
A blood grop does not have any antigen but possesses both a and b antibodies. It is O.
312.

A person with antigen A in the RBC and antibody B in plasma belongs to the blood group :A. AB. BC. OD. AB

Answer» Correct Answer - A
313.

Blood pressure in the mammalina aorta is maximum duringA. Systole of the left ventricleB. Diastole of the right atriumC. Systole of the left atriumD. Disatole of the right ventricle

Answer» Correct Answer - A
Blood pressure in the mammalina aorta is maximum during systole of the left ventricle.
314.

Which of the following statements is true with respect to sounds produced during cardiac cycle?A. The first hear sound (lub) is associated with the closure of semilunar valvesB. The first heart sound (lub) is associated with closure ot tricuspid and bicuspid valvesC. Second heart sound (dub)is associated with closure of bicuspid valvesD. Second heart sound (dub) is associated with closure of tricuspid valves

Answer» Correct Answer - B
The first heart sound (lub) is associated with closure of tricuspid and bicuspid value.
315.

The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse isA. SA node `to` AV node `to` Bundle of His `to` Purkinje fibresB. AV node `to` Bindle of His `to` SA node `to` Purkinje fibresC. SA node `to` Purkinje fibres `to ` AV node `to` Bundle of HisD. Purkinje fibres `to` AV node `to` SA node `to` Bundie of His

Answer» Correct Answer - A
316.

Chemicals that can induce immune response are calledA. AntigenB. AntibodyC. AntiserumD. Antitoxin

Answer» Correct Answer - A
Chemicals that can induce immune response are called antigen.
317.

Assertion: The nodal musculature has the ability to generate action potentials without any external stimuli, i.e., it is auto-excitable. Reason: The number of action potentials that could be generated in a minute very at different parts of the nodal system.A. If both asseration and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true reason is false.D. If both assertion and reason are false.

Answer» Correct Answer - B
The nodal musculature has the ability to generate action potentials without any externam stimuli, i.e., it is auto-excitable.
The number of action potentials that could be generated in a minute very at different parts of the nodal system.
318.

Which one is the common anticoagulant used for preserving blood?A. Sodium hydroxideB. Sodium chlorideC. Sodium oxalateD. Sodium bicarbonate

Answer» Correct Answer - C
Sodium oxalate is the common anticoagulant used for preserving blood.
319.

Match the items listed in column I with appropriate items from column II :

Answer» (i) (iii), (ii) (iv), (iii) (v), (iv) (vi), (v) (i), (vi) (ii).
320.

The function of vagus nerve innervating the heart is toA. Initiate the heart beatB. Reduce the heart beatC. Accelerate the heart beatD. Maintain constant heart beat

Answer» Correct Answer - BIt is b because it reduce he art beat
321.

Which one secreates anticoagulant?A. Mast cellsB. Nerve cellsC. Adipose cellsD. Plasma cells

Answer» Correct Answer - A
Mast cells secretes anticoagulant (heparin).
322.

Stimulation of the vagus nerve will make the heart beatA. DecreaseB. IncreaseC. Remain normalD. Stop

Answer» Correct Answer - B
If vagus/parasympathetic nerve to heart is cut, the heart beat will increase.
323.

The function of vagus nerve innervating the heart is toA. maintain constant heartbeatB. accelerate the heartbeatC. initiate the heartbeatD. reduce the heartbeat

Answer» Correct Answer - D
324.

Define a portal vein. Explain the functions of such a vein in our digestive tract.

Answer» A vein which pours its blood to some intermediate organ like liver or kidney before taking it to heart is called portal vein. The absorbed nutrients from the small intestline are first brought to liver via hepatic portal vein. Here, excess unwanted substances are modified and the blood is then sent to heart via hepatic veins. So, heart is protected from loading with nutrients.
325.

The pericardium and the pericardial fluid help inA. Protecting the heart from friction, shocks and keeps it moistB. Pumping the bloodC. Receiving the blood from various parts of the bodyD. None of the above

Answer» Correct Answer - A
Pericardium (protective covering) and pericardiac fluid protects the heart from shocks, mechanical injuries and keeps it moist and also allows free movements of the heart.
326.

Which among the following is correct during each cardiac cycleA. The volume of blood pumped out by the Rt and Lt ventricles is sameB. The volume of blood pumped out by the Rt nad Lt ventricles is differentC. The volume of blood received by each atrium is differentD. The volume of blood received by the aorta and pulmonary artery is different

Answer» Correct Answer - A
327.

Although much `CO_(2)` is carried in blood, yet blood does not become acidic, becauseA. In `CO_(2)` transport blood buffers play an important roleB. `CO_(2)` combines with water to form `H_(2)CO_(3)` which is neutralised by `H_(2)CO_(3)`C. `CO_(2)` is continuosly diffused through the tissues and is not allowed to accumulateD. `CO_(2)` is absorbed by leucocytes

Answer» Correct Answer - A
Its due to buffer action of blood
328.

During systole of heartA. only atria contractB. only ventricles contractC. atria and ventricles contract seperatelyD. Atria and ventricles contract simultaneously

Answer» Correct Answer - C
329.

The T-wave in an ECG representsA. Depolarisation of ventriclesB. Electrical excitation of atriaC. Beginning of systoleD. Return of the ventricles from excited state

Answer» Correct Answer - D
330.

Which one is present in tunica media?A. Colllagen fibres and smooth musclesB. Yellow fibres and smooth musclesC. Yellow dibres and striated musclesD. Squamons epithlium and striated muscles

Answer» Correct Answer - B
Yellow fibres and smooth muscles are present in tunica media.
331.

Of which 3 events a heart beat or cycle consists ? Give the duration of heart beat.

Answer» Auricular systole, ventricular systole and joint diastole (complete cardiac diastole), about 0.8 seconds.
332.

Which of the following is the correct statement about the circulatory system of cockroachA. It is closed type of circulatory systemB. It is a complicated type of circulatory systemC. It takes place without the participation of tissueD. It has 13 chambered heart and in each segment one pair of ostia are present

Answer» Correct Answer - D
The heart of cockroach is pulsatile and formed of 13 inverted funnel-shaped segmental chamber, each chamber (except last one) has a pair of apertures called ostia which open into the pericardial sinus.
333.

Tunica externa is composed ofA. EndotheliumB. Connective tissueC. Smooth musclesD. Glycoproteins

Answer» Correct Answer - B
334.

The walls of capillaries are composed of endothelium which isA. Cuboidal epitheliumB. Squamous epitheliumC. Columnar epitheliumD. Stratified epithelium

Answer» Correct Answer - B
335.

___ is composed of just one cell layer.A. CapillaryB. ArterioleC. VenuleD. Vein

Answer» Correct Answer - A
336.

In a Portal system (Man) `:-`A. a vein starts from an organ and ends up in the heartB. an artery breaks up in an organ and restarts by union of capillaryC. a vein enters into an organ other than the ehart and breaks up into capillariesD. the blood from gut is brought into kidneys before it is poured into posterior vena cava

Answer» Correct Answer - C
337.

Which is trasnmitted through serum?A. Venereal diseasesB. CirrhosisC. TuberculosisD. Hepatitis

Answer» Correct Answer - D
Hepatitis is transmitted through serum.
338.

Heat beat is heard on left side asA. Aorta is on left sideB. Heart is on left sideC. Ventricles are on left sideD. Left ventricle is on left side

Answer» Correct Answer - D
Heart beat is heard on left side as left ventricle is on left side.
339.

Normal pulse prussure isA. 80 mm HgB. 120 mm HgC. 40 mg HgD. 320 mm Hg

Answer» Correct Answer - C
Normal pulse pressure is 40 mg Hg.
340.

Amount of blood received by brain every minute isA. 2500 mlB. 1000 mlC. 750 mlD. 450 ml

Answer» Correct Answer - C
Amount of blood recevied by brain every minure is 750 ml.
341.

If blood pressure reads 140 systole and 90 diastole, the condition is calledA. HypertensionB. NormalC. HypotensionD. Ischemia

Answer» Correct Answer - A
If blood pressure reads 140 systole and 90 diastole, the condition is called hypertension.
342.

One of the common symptoms observed in people infected with dengue fever isA. significant decrease in RBC countB. significant decrease in WBC countC. significant decrease in platelets countD. significant increase in platelets count

Answer» Correct Answer - C
Thrombocytopenia i.e.m, decrease in platelet count is one of the common symptoms observed in people infected with dengue fever.
343.

Anemia is due to deficiency ofA. CaB. FeC. MgD. P

Answer» Correct Answer - B
Anemal is due to deficiency of Fe.
344.

Which artery is absent in frog The diaphragm is supplied with blood byA. Cardiac arteryB. Phrenic arteryC. Lingual arterlyD. Lumbar artery

Answer» Correct Answer - B
A pair of phrenic arteries arise from the aorta and supply the diaphragm. Phrenic artery present in human but absent in frog.
345.

Blood vessel of diaphragm is calledA. CoronaryB. CardiacC. PhrenicD. Pulmonary

Answer» Correct Answer - C
Blood vessel of diaphargm is called phrenic.
346.

Which one of the following statements is correct regarding blood pressure ?A. 130/90 mm Hg is considered high and requires treatmentB. 100/55 mm Hg is considered and ideal blood pressureC. 105/50 mm Hg makes one very activeD. 190/110 mm Hg may harm vital organs like brain and kidney.

Answer» Correct Answer - D
Normal blood pressure is 120/80 mm Hg. Blood pressure of 190/110 mm Hg is regarded as high blood pressure. It leads to heart diseases and also affects vital organs like brain and kidney.
347.

In human blood, the oxygen carrier isA. Carbonic anhydraseB. HaemoglobinC. HaemocyaninD. Both (1) & (3)

Answer» Correct Answer - B
348.

Refer to the given electrocardiogram and select the correct statement A. It shows electrocardiogram of a healthy personB. It shows partial blockage due to damaged AV nodesC. It shows complete blockage and three is no synchrony between atrial and ventricular activitesD. It shows that muscles of the heart are weak

Answer» Correct Answer - C
In case of complete A-V block (third degree block), the condition in the AV bundle causes complete block of the impulse from the atria into the ventricles. The ventricles spontaneously establish their own signal usually originating in the AV node or AV bundle. Therefore, the P wave become dissociated from QRS-T complexes and there is no relation between the rhythm of the P waves and that of the QRS-T complexes. The rate of rhythm of the atria in this elecrocardiogram is about 100 beats per minute, whereas the rate of ventricular beat is less than 40 per minute.
349.

In most of the mammals, RBCs haveA. NucleiB. No nucleiC. No mitrochondriaD. Both (2) & (3)

Answer» Correct Answer - D
350.

Arteries areA. Thin-walled and blood flows under diminished pressureB. Thick-walled and blood flows under high pressureC. Thin-walled and blood flows under high pressureD. Thick-walled and blood flows under diminished pressure

Answer» Correct Answer - B
Arteries are thick walled carrying oxygenated blood from heart to various parts of body at high pressure.