261.
Blood capillaries are made of A
endothelium, connective tissue and muscle fibres
B
endothelium and muscle fibres
C
endothelium and connective tissue
D
endothelium only
Answer :
endothelium only
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262.
Removal of which organ will have least effect in an adult Rabbit A
Splen
B
Liver
C
Pancreas
D
Pituitary
Answer :
Splen
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263.
Which one of the following plasma proteins is involved in the coagulation of blood ? A
an albumin
B
serum amylase
C
a globulin
D
fibrinogen
Answer :
fibrinogen
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264.
In circulatory system, valves occur in A
Heart and blood bessels of both vertebrates and invertebrates as well as vertebrate lymphatics
B
Both vertebrate and invertebrate hearts
C
Vertebrate heart only
D
Both vertebrate and invertebrate hearts and their blood vessels
Answer :
Heart and blood bessels of both vertebrates and invertebrates as well as vertebrate lymphatics
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265.
The cardiac pacemaker in a patient fails to function normally. The doctors find that an artifical pacemaker is to be grafted in him. It is likely that it will be graft ed at the site of A
Purkinje system
B
Sinuatrial node
C
Atriovebntricular node
D
Atrioventricular bundle
Answer :
Sinuatrial node
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266.
Origin of heart beat and its conduction is represented by A
Av node → Bundle of His → SA node → Purkinje fibers
B
SA node → Purkinje fibers → AV node → Bundle of His
C
Purkinje fibers → AV node → AV node → Bundle of His
D
SA node → AV node → Bundle of His → Purkinje fiberss
Answer :
SA node → AV node → Bundle of His → Purkinje fiberss
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267.
Which of the following is valve less A
Arteries
B
Veins
C
Lymphatics
D
Chambers in Heart
Answer :
Arteries
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268.
Brachial arteries supply blood to A
Neck
B
Fore limbs
C
Chest
D
Abdomen
Answer :
Fore limbs
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269.
Which of the following have thickest wall A
Right auricle
B
Left auricle
C
Right ventricle
D
Left ventricle
Answer :
Left ventricle
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270.
Rt. Atrium of Rabbit receives A
Two Ant. Vena Cave
B
Two Post. Vena Cave
C
One Post. Vena Cave
D
Stratified squamous epithelium
Answer :
Stratified squamous epithelium
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