The photosensitive cells present in the retina are called

  • fovea
  • rods and cones
  • rhodopsin
  • optic disc

The nervous system responsible for voluntary action is

  • somatic
  • systematic
  • autonomic
  • automatic

The quick involuntary response which is produced by the central nervous system is called

  • autonomic response
  • flight response
  • reflex action
  • reflex arc

Most of the white color of the eye is given by

  • sclera
  • cornea
  • retina
  • choroid

Eyelids spread tears on eyes that have substances for fighting

  • virus infection
  • bacterial infection
  • germs infection
  • eye infection

Special neuroglial cells located at regular intervals along axons are called

  • nerve cells
  • embryonic stem cells
  • Schwann cells
  • ganglia

Level of calcium ions in the blood is decreased by

  • thyroxin
  • parathormone
  • calcitonin
  • estrogen

The secretions of the pituitary gland are controlled by

  • hypothalamus
  • thalamus
  • hippocampus
  • cerebrum

The optic disc is also called

  • fovea
  • optic nerve
  • blind spot
  • black spot

Impulses move from receptors to CNS through

  • sensory pathway
  • motor pathway
  • mixed pathway
  • nerve pathway

The fovea is largely responsible for

  • colour vision and sharpness
  • colour blindness
  • blind spot
  • night blindness

Hormones called corticosteroids are secreted by

  • adrenal medulla
  • thyroid gland
  • adrenal cortex
  • parathyroid gland

The hormones of endocrine glands are released in

  • blood
  • kidneys
  • arteries of heart
  • spinal cord

In long sight disorder of eyes, the image of an object placed at a distance is formed

  • behind the blind spot
  • in front of retina
  • behind the retina
  • in front of blind spot

When a person has hypermetropia, the image is formed

  • in front of retina
  • behind retina
  • on blind spot
  • none of above

The middle ear is separated from the inner ear by

  • Eustachian tube
  • round window
  • oval window
  • external ear

The oval window is responsible for the separation of

  • incus and stapes
  • external and middle ear
  • middle and inner ear
  • external ear and ear drum

In humans the pairs of cranial nerves are

  • 31
  • 13
  • 12
  • 15

The part of forebrain which lies below the cerebrum is

  • cerebellum
  • cerebral hemisphere
  • thalamus
  • hypothalamus

Pigment contained by Rods is called

  • iodopsin
  • melanin
  • rhodopsin
  • eumelanin

The hormone released by the four glands present in the posterior side of the thyroid gland is called

  • hyperthormone
  • hypothormone
  • parathyroid
  • parathormone

Level of calcium ions in the blood is increased by

  • thyroxin
  • parathormone
  • calcitonin
  • estrogen

Main types of cones are

  • two
  • three
  • four
  • five

The overproduction of thyroxine is

  • hypothyroidism
  • hyperthyroidism
  • goitre
  • dwarfism

The retina is an eye layer that is sensory and

  • middle
  • outer
  • inner
  • single

Considering the external ear structure, the auditory canal of the ear ends into the

  • pinna
  • ear drum
  • cochlea
  • stapes

The over-production of thyroxin hormone than the regular level is called

  • hyperthyroidism
  • goitre
  • hypothyroidism
  • parathyroidism

The blind spot is so-called due to the absence of

  • rods
  • cones
  • rods and cones
  • retina

The dark color is given to the inner eye by

  • choroid
  • cornea
  • retina
  • cornea

The largest endocrine gland in humans is

  • adrenal
  • thyroid
  • pituitary
  • vasopressin
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