In the somatic nervous system, the motor carry impulses to skeletal muscles from

  • central nervous system
  • reflexive nervous system
  • autonomic nervous system
  • ventral nervous system

Considering the human ear structure, the external ear is comprised of

  • stapes and pinna
  • malleus and auditory canal
  • incus and stapes
  • pinna and eardrum

The muscular ring formed by the bending of the choroid is called

  • ciliary muscles
  • choroid
  • iris
  • pupil

Eyes of cats and dogs shine at night due to the presence of

  • cataract
  • optic disc
  • Tapetum
  • eye lens

How many pairs of spinal nerves arise along the spinal cord?

  • 12
  • 22
  • 31
  • 41

The lens becomes more round and convex when the

  • suspensor ligaments expands
  • suspensor ligament contracts
  • ciliary muscles contract
  • ciliary muscles expand

The deficiency of somatotropin hormone in growth years causes a decrease in growth called

  • vasopressin
  • acromegaly
  • dwarfism
  • gigantism

Breathing, heart rate, and blood pressure are controlled by

  • medulla oblongata
  • cerebellum
  • pons
  • hindbrain

The excessive amount of somatotropin leads to the disorder causes tall height is called

  • dwarfism
  • gigantism
  • vasopressin
  • acromegaly

The hormone somatotropin is produced by

  • thyroid gland
  • adrenal gland
  • pancreas
  • pituitary gland

When the involuntary response produced by CNS is very quick, it is called

  • reflex arc
  • reflex action
  • sympathetic nervous system
  • parasympathetic nervous system

The two points of the retina are called

  • rods and cones
  • cornea and iris
  • anterior chamber and posterior chamber
  • fovea and optic disc

All are examples of cranial reflexes, but, not

  • salivation
  • scratching
  • blushing
  • sneezing

Considering 10 hours after intake of food, the blood glucose level (per 100 ml) for a diabetic patient is

  • 70 to 99 mg
  • 100 to 125 mg
  • 126 mg and above
  • 50 to 70 mg

The function of hypothalamus in the brain is to link

  • ganglion and neuroglial
  • sensory dendrites and axons
  • endocrine system and nervous system
  • pituitary gland and thalamus

Somatotrophin is a

  • growth hormone
  • nutritional hormone
  • balance hormone
  • reproductive hormone

The examples of effectors in chemical coordination are

  • human skin and eyes
  • nerve impulses
  • glands and muscles
  • target tissues

Which of the following conduct impulses toward the cell body?

  • nodes of ranvier
  • Schwann cells
  • axons
  • dendrites

Paralysis is caused by damage to the

  • central nervous system
  • nerves
  • neurons
  • muscles

The vasopressin hormone secreted by the posterior lobe of the pituitary gland is also known as

  • prolactin hormone
  • lactose hormone
  • antidiuretic hormone
  • diuretic hormone

Rods and cones are contained by

  • choroid
  • cornea
  • retina
  • fovea

Nodes of Ranvier are present between the areas of myelin on an

  • dendrite
  • myelin sheath
  • axon
  • cell body

Temperature and dampness of auditory canal is maintained by

  • special fluid
  • pinna
  • tympanum
  • wax and hair

The brain stem consists of the pons, medulla oblongata and

  • forebrain
  • midbrain
  • hindbrain
  • hypothalamus

The normal range of blood glucose after an 8-10 hour fast is

  • 50mg/100 ml
  • 25mg/100ml
  • 99mg/100ml
  • 75mg/100ml

Which of the following muscles of iris contract during bright light?

  • radial
  • circular
  • ciliary
  • none of above

A wave of electrochemical changes that travels along the length of neurons is called

  • nerve-growth factor
  • myelin sheath
  • hormone
  • nerve impulse

The human brain is situated in a bony structure called

  • benign
  • meninges
  • polonium
  • cranium

Gigantism is due to overproduction of

  • thyroxine
  • parathyroid
  • somatotrophin
  • insulin

Increased production of parathormone causes

  • soft bones
  • porous bones
  • strong bones
  • brittle bones
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