Overview Of Nervous System

Question 1

What r the control systems of body

Answer 1

1) Nervous system control various activities of body, by generating & sending electrical impulses
Co-ordinates these activities by receiving signals from receptors
2) Endocrine system

Question 2

Nervous system division
Central NS
Peripheral Ns

Answer 2

1) Central - brain , sp cord
2) Peripheral -a)somatic ~voluntary ,
b) autonomic ~involuntary
#autonomic NS is divided into sympathetic & parasympathetic NS

Question 3

Brain, sp cord are formed by two layers ie, gray matter, white matter
How it is formed, arranged in brain, sp cord?

Answer 3

Gray matter formed by cell bodies
White matter formed by nerve fibers
In brain white matter in middle
In sp cord white matter at periphery & gray matter at center

Question 4

Coverings of brain & sp cord
Inner to outer

Answer 4

1) paimater-inner vasular,smooth layer
2) arachnoid🕷 mater - trabeculi
# space b/w them is sub arachnoid space filled with CSF
3) duramater - outer tough layer
In this 2 layers present - periosteal &menengial layer, space b/w them is dural venous sinuses

Question 5

Parts of brain
1) prosencephalon (forebrain) 2 divi
2) mesencephalon (mid brain)
3) rhombencephalon (hind brain) 2divi
Name the divisions?

Answer 5

1) forebrain divides into
*telencephalon -cerebral hemispheres basal ganglia, hippocampus, amygdaloid nucleus
*diencephalon- thalamus,subthalamus hypothalamus , metathalamus
3) hind brain divides into metencephalon - cerebellum, pons
Myelencephalon - medulla oblongata

Question 6

Parts of brainstem

Answer 6

Midbrain , pons , medulla oblongata
OR
Midbrain + hind brain - cerebellum

Question 7

Grp of axons in CNS, PNS
Gro of cell bodies in CNS, PNS

Answer 7

Nerve CNS PNS
Axon tracts nerves
Cell bodies nuclei ganglion

Question 8

What are comissural fibres, association fibres?

Answer 8

Comissural - fibres that connect lft, rt CNS parts Ex: corpus callosum

Association - connects parts of CNS from front to back (antero-posterior)