Introdiction MCQ 13+

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• The neuroglia
  ক

  Are more numerous than neurons

  খ

  Are non-excitable cell

  গ

  Take active part in ionic transport

  ঘ

  Developed from mesoderm

  ঙ

  Do not undergo mitotic division
• The following statements are correct regarding neuroglial cells
  ক

  Glial cells may provide nutritional support to neurons

  খ

  Microglia increase in number at the sites of damage to the neurons

  গ

  They are directly involved in information processing of the nervous system

  ঘ

  Astrocytes and oligodendroglia both possess few processes

  ঙ

  Each glial cell produces the myelin sheath over only a short part of an axon
• Pyramidal cells are found in
  ক

  Frontal cortex

  খ

  Occipital cortex

  গ

  Hippocampus

  ঘ

  Parietal cortex

  ঙ

  Cerebeller cortex
• Lower motor neuron lesions are characterized by
  ক

  Flaccidity

  খ

  Loss of tendon reflexes

  গ

  Wasting

  ঘ

  Spasticity

  ঙ

  Increased tendon reflexes
• Damage to the sympathetic nerves from the thoracolumbar outflow T11 to L2 will disturb the function-
  ক

  Detrusor muscle

  খ

  Bladder neck

  গ

  Trigone

  ঘ

  Seminal vesicles

  ঙ

  External sphincter
• Gray matter contains
  ক

  Myelinated axons

  খ

  Protoplasmic astrocyte

  গ

  Neuronal cell bodies

  ঘ

  Oligodendrocytes

  ঙ

  Lymph vessels
• About autonomic nervous system
  ক

  Postganglionic neurons are largely unmyelinated

  খ

  All preganglionic neurons are cholinergic

  গ

  Preganglionic neurons of the sympathetic system are shorter than the para sympathetic system

  ঘ

  Parasympathetic outflow is only found in the cranial nerves

  ঙ

  Sympathetic preganglionic neurons leave spinal cord via dorsal roots of spinal nerves T1-L3
• Nerve fibres that supply skeletal muscle are axons of neurons located in
  ক

  Ventral gray column of the spinal cord

  খ

  Somatic efferent nuclei of cranial nerves

  গ

  Dorsal nerve root ganglia

  ঘ

  Branchial efferent nuclei of cranial nerve

  ঙ

  Intermediolateral gray column of the spinal cord
• The middle meningeal artery
  ক

  Is a branch of external carotid artery

  খ

  Enters the skull through the foramen rotundum

  গ

  Anastomoses with the ophthalmic artery

  ঘ

  Lies deep to the region of the pterion

  ঙ

  Supplies 25% of the temporal lobe of the brain
• Blood brain barrier is formed by
  ক

  Astrocyte

  খ

  Endothelial cells

  গ

  Oligodendrocyte

  ঘ

  Ependymal layer

  ঙ

  Neuron
• The blood-brain barrier
  ক

  Is formed by the tight junctions

  খ

  Provides support to the brain tissue

  গ

  Regulates the intracellular environment of the central nervous system

  ঘ

  Uses chemical signals to communicate with the spinal cord.

  ঙ

  Is formed by the oligodendrocytes
• Multipolar neurons are found in the
  ক

  Motor cells of the spinal cord

  খ

  Peripheral nerves

  গ

  Posterior root ganglia

  ঘ

  Vestibular ganglia

  ঙ

  Retina
• Sympathetic and parasympathetic nervous systems act as physiological antagonists in following organs
  ক

  Urinary bladder

  খ

  Airways

  গ

  Cilliary muscles

  ঘ

  Heart

  ঙ

  Blood vessels