Heart sound dub is caused due to closing of from Biology NEET Ye

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Proximal and distal convoluted tubules are parts of a

  • nephron

  • oviduct

  • vas deferens

  • caecum


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2.

Heart sound dub is caused due to closing of

  • valve

  • tricuspid valve

  • semilunar valve

  • None of the above


C.

semilunar valve

Dup (a second heart sound) occurred by closing the semilunar valve when high pressure developed in aorta and pulmonary artery tends to force some blood back towards the ventricle.


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3.

Posterior pituitary gland

  • produces and store hormones

  • stores 6 trophic honnones

  • stores and releases ADH and oxytocin

  • release and store growth and thyroid stimulating hormone


4.

The instrument used for measuring blood pressure is

  • electrocardiograph

  • X-rays

  • sphygmomanometer

  • electroencephalograph


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5.

Heart beats originates from

  • pace maker

  • cardiac muscles

  • left atrium

  • right ventricle


6.

Cranial nerve showing maximum branching is

  • trigeminal

  • vagus

  • optic

  • facial


7.

Gonadotrophins are secreted from

  • gonads

  • anterior pituitary

  • posterior pituitary

  • antidiuretic hormone


8.

Earthworms are economically important for man as these are used as

  • bait for catching fish

  • food of poultry

  • medicine for gout

  • All of the above


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9.

Which of the following is a part of pectoral girdle?

  • Ilium

  • Ischium

  • Acetabulum

  • Glenoid cavity


10.

Water vascular system is characteristic of

  • Protozoa

  • Porifera

  • Annelida

  • Echinodermata


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