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

Show the structures of human auditory sensitivity, Q. What are the structur...

Q. What are the structures that participate in the human auditory sensitivity? The structures of the human auditory sensitivity are the ears (middle and internal, external) the

Explain the treatment of lyme disease, Treatment of Lyme Disease Lyme d...

Treatment of Lyme Disease Lyme disease in North America is caused by the spirochete Borrelia burgdorferi, which is transmitted to humans by Ixodes scapularis or pacificus tick

Conductometry, Definition and applications

Definition and applications

Can you explain toxic alkaloids, Q. Can you explain Toxic alkaloids? Al...

Q. Can you explain Toxic alkaloids? Alkaloids are the nitrogen heterocycles which occur mainly m plants as their salts of common carboxylic aciak such as citric, lac

Types of nitrogen wastes excreted by living beings, Q What are the three ma...

Q What are the three major types of nitrogen wastes excreted by living beings? The main nitrogen wastes excreted by living beings are ammonia, urea and uric acid. Living beings

Explain the term- cerebral ischemia, Explain the term- Cerebral Ischemia ...

Explain the term- Cerebral Ischemia Ischemia refers to any of a group of disorders in which the symptoms are caused by vessel blockage preventing a sufficient supply of blood t

Define factors that affecting the bmr, Define Factors that Affecting the BM...

Define Factors that Affecting the BMR? Basal metabolic rate, we know, is the largest component of the daily energy demand representing 45 to 70 percent of daily total energy ex

What are the five classes of vertebrates, Q. What are the five classes of v...

Q. What are the five classes of vertebrates? To which of these do human beings belong? The five classes of vertebrates are amphibians, reptiles, fishes (osteichthyes and chondr

Ststems of human body, what is reproductive system? what is urinary System?...

what is reproductive system? what is urinary System? What is Nervous system

Apical ectodermal ridge or aer, Apical Ectodermal Ridge (AER) We have ...

Apical Ectodermal Ridge (AER) We have described earlier that the AER persists at the tip until the last phalangeal cartilage begins differentiation. The following experiments

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages