Nervous system - cranial nerves, Biology

Assignment Help:

CRANIAL NERVES

  • 12 pairs. Total weight 12 gms.
  • Upto amphibian 10 pairs cranial nerves are present.
  • 1, 2, 8, - sensory. 3, 4, 6, 11, 12, motor. 5, 7, 9, 10 - mixed.
  • 3, 7, 9, 10 th attached to ANS also.

S.N.

 

1.

NO.

 

I

NAME

 

Olfactory

ORIGIN & DISTRIBUTION

 

Olfactory epithelium

2.

II

Optic

Retina

3.

III

Oculomotor

Eye muscle

4.

IV

Pathetic (Trochlear)

Eye muscle

 

5.

 

V

(Smallest)

Trigeminal (Thickest)

 

 

 

Dentist Nerve

 

 

 

In it glassarian ganglion present

 

 

(a) Ophthelmic

(b) Maxillary

(c) Mendibular

Snout Upper jaw Lower jaw

6.

VI

Abducens (Thinnest)

Eye muscle

7.

VII

Facial

 

 

 

(a) Palatine

Buccal cavity

 

 

(b) Hyomendibular

Tongue

 

 

8.

 

 

VIII

(c) Chorda tympani

Auditory

Salivary gland

 

 

(a) Vestibular

 

 

 

9.

 

 

IX

(b) Cochlear

Glossopharyngeal

Ear

 

 

(a) Lingual

Tongue

 

 

10.

 

 

X

(b) Pharyngeal

Vagus (Largest)

Pharynx

 

 

(a) Anterior laryngeal

Larynx

 

 

(b) Cardiac depressor

Heart

 

 

(c) Recurrent laryngeal

Larynx

 

 

(d) Main vagus

Heart, Lungs, Stomach, Intestine

 

 

Also known as pneumogestric

 

 

 

or wandering nerve.

 

11.

XI

Accessory Spinal

Muscle of neck & shoulder

12.

XII

Hypoglossal

Tongue & lower jaw


Related Discussions:- Nervous system - cranial nerves

Annuloplasty with a ring, Annuloplasty with a Ring :  The lings commo...

Annuloplasty with a Ring :  The lings commonly used are Carpentier- Edwards and Cosgrove's flexible half ring. The rings are C shaped and have incomplete circles to accommoda

Bovine rotavirus diarrhoea, Bovine rotavirus diarrhoea The bovine rota...

Bovine rotavirus diarrhoea The bovine rotavirus is a RNA virus with 11 segments of double stranded RNA belonging to the genus Rotavirus in the family Reoviridae. Rotaviruses c

Explain the physiologic mechanism of osseointegration, Q. Explain the Physi...

Q. Explain the Physiologic mechanism of osseointegration It has been suggested that the physiologic mechanism for maintaining osseous integration is a sustained evolution in re

Plant breeding, #questitypes of plant breeding on..

#questitypes of plant breeding on..

Hypomagnesemia, H y p o ma g n e s e m i a It is also known...

H y p o ma g n e s e m i a It is also known as grass staggers or lactation or grass tetany and results in clonic and tonic muscular spasms and convulsions. E

Pylum mollusca, Economic importance of phylum mollusca

Economic importance of phylum mollusca

Techniques of counselling, Counseling is a process whereby a qualified pers...

Counseling is a process whereby a qualified person purposefully assists another person to handle his or her problems. Counselling is not just giving advice. It is dependent  on mut

Organic molecules, Organic Molecules Some organic molecules in life...

Organic Molecules Some organic molecules in life are Carbohydrates and Lipids à C, H and O Proteins à C, H, O, N & sometimes S Nucleic acids à C, H, O, N & P

Explain heterologous and homologous immunoglobulins, Q. What is the differe...

Q. What is the difference between heterologous and homologous immunoglobulins? Homologous immunoglobulin is the human from the same species immunoglobulin and In case of inocul

Explain the Process of dna technology - Enzymes, Explain the Process of dna...

Explain the Process of dna technology Procedures involving recombinant DNA technology has been used to increase the yield of enzymes already produced by the microorganisms, e.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd