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

How many different gene types are possible, In lab rats, hair color and tex...

In lab rats, hair color and texture are controlled by two genes, the A gene for color and the B gene for texture. in both of these genes, the alleles show no dominance to each othe

Explain cardiac calcification, Q. Explain Cardiac calcification? Peric...

Q. Explain Cardiac calcification? Pericardial Calcium is most dense in the atrioventricular grooves and is seen as thick oblique circles or arcs of calcification. From th

Zoonotic diseases-yellow fever, Yellow fever Yellow fever also known a...

Yellow fever Yellow fever also known as Black Vomit and American plaque is a viral disease primarily of monkeys and transmitted to man by female Aedes mosquitoes. It is caused

What information from the patients symptoms, A 16 year old boy named Jake w...

A 16 year old boy named Jake was admitted into the emergency room complaining of headache, fever, stiffness of abdominal muscles and difficulty swallowing. The doctor on staff bega

Explain the term fasb and iasb, Discuss FASB and IASB. Comment on at least ...

Discuss FASB and IASB. Comment on at least two specific aspect of the two standard setting boards and their role in setting accounting.

Microbiology, control of microorganisms by chemical method.

control of microorganisms by chemical method.

How to increase in sodium conductance, How to increase in sodium conductanc...

How to increase in sodium conductance A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM.  The neuron is healthy.  At 2 AM, the ph

What is the resistance of its circuitry, A flashlight with a 6-volt bulb dr...

A flashlight with a 6-volt bulb draws 2 amps from its batteries. What is the resistance of its circuitry?

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