Nervous system - cranial nerves, Biology

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

Posted Date: 10/3/2012 1:47:07 AM | Location : United States







Related Discussions:- Nervous system - cranial nerves, Assignment Help, Ask Question on Nervous system - cranial nerves, Get Answer, Expert's Help, Nervous system - cranial nerves Discussions

Write discussion on Nervous system - cranial nerves
Your posts are moderated
Related Questions
Explain briefly how computed tomography (CT) helps the doctors in pinpointing the defects in the patient's body

Question 1: Explain how drug approval is obtained through various Regulatory Bodies in India using a flow diagram? List out the different regulatory bodies in India L

Explain about the Autodispensor? This is used to transfer accurate quantities of liquids that are difficult to pipette like concentrated acids, alkalis, etc. You will also use

Q. Into which type of energy is the light used in photosynthesis transformed? The luminous energy used in the photosynthesis is transformed in to the chemical energy.

Define Importance of Nutrition in Human Body? Nutrition is increasingly being recognized as an important determinant, which modulates the biological process of ageing. Poor nut

Q What is the kind of nitrogen waste that mammals eliminate? Like chondrichtian fishes and adult amphibians, mammals are ureotelic that is they excrete urea. Q. How do plac

Wigs and hairs - Seed Appendages Seeds of certain plants have epidermal outgrowths or the integuments themselves may form folds and projections that present a wing-like appea


Q. Why is the dietary obtainment of iodine so important for thyroid functioning? The obtainment of iodine from the diet is vital for the thyroid because this chemical element i