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Which part of the human ear plays no role in hearing as such but is otherwise very much required?

  • Eustachian tube

  • Organ of corti

  • Vestibular apparatus

  • Ear ossicles

Given ahead is n incomplete table about certain hormones, their source glands and one major effect of each on the body in humans. Identify the correct option for the three blanks A, B and C. 

Gland

Secretion

Effect on Body

A

Oestrogen

Maintenance of secondary sexual characters

Alpha cells of islets of Langerhans

B

Raise blood sugar level

Anterior pi- tuitary

C

Over secretion leads to gigantism

 
  • A

    B

    C

    Placenta

    Insulin

    Vasopressin

  • A

    B

    C

    Ovary

    Insulin Calcitonin
  • A

    B

    C

    Placenta

    Glucagon

    Calcitonin

  • A

    B

    C

    Ovary

    Glucagon Growth hormone

Good vision depends on adequate intake of carotene rich food
Select the best option from the following statements
(a) Vitamin A derivatives are formed from carotene
(b)The photopigments are embedded in the membrane discs of the inner segment
(c) Retinal is a derivative of vitamin A
(d) Retinal is a light absorbing part of all the visual photopigments

  • (a) & (b)

  • (a), (c) & (d)

  • (a) & (c)

  • (b), (c) & (d)

Select the answer with the correct matching of the structure, its location and function.

  • Structure

    Location

    Function

    Eustachian

    Anterior part of internal ear

    Equalizes air pressure on either sides of tympanic membrane

  • Structure

    Location

    Function

    Cerebellum

    Mid -brain Controls respiration and gastric secretions
  • Structure

    Location

    Function

    Hypothalamus

    Forebrain Control body temperature, urge for eating and drinking
  • Structure

    Location

    Function

    Blind Spot

    Near the place where optic nerve leaves the eye Rods and cones are present but inactive here

Which one of the following not act as a neurotransmitter?

  • Acetylcholine

  • Epinephrine

  • Nor epinephrine

  • Cortisone

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