CRANIAL NERVES IN RABBIT(MAMMALS)-TABLE

RABBIT (MAMMALS) CRANIAL NERVES ,AND THEIR NAMES ORIGIN,NATURE, AND DISRRIBUTIO IN TABLE

 

SI. Name of the No. Cranial nerve	Branches	Nature	Origin	Distribution
1. Olfactory nerve	—	Purely somatic sensory nerve.	Anterior end of olfactory lobe.	Mucous membrane of the nasal sacs.
2. Optic nerve	—	Purely somatic sensory nerve.	Ventro-lateral part of the optic lobe	Retina of the eye.
3. Occulomotor nerve		Somatic motor nerve.	Ventral surface of the midbrain (crura cerebri)	Muscles of the eye (internal, superior rectus, inferior and inferior obliquemuscles)
4. Trochlear nerve (Pathetic)		Somatic motor nerve.	Dorsally between the optic lobes and cerebellum	Fifth muscle of the eye (superior obliquemuscle)
5. Trigeminal nerve	a. Opthalmic b. Maxillary c. Mandibular	Mixed nerve Somatic sensory nerve Somatic Sensory nerve mixed nerve.	Antero-lateral part of medulla oblongata	a. Skin of snout b. Skin of the upper jaw and lower eye lid. c. Muscles of the lower jaw and its skin.
6. Abducens nerve		Somatic motor nerve	Ventral side of the medulla oblongata	muscles of the eye
7. Facial nerve	a. Palatine b. Hyomandi- bular	Mixed nerve Visceral sensory nerve Visceral motor nerve	Lateral parts of the medulla oblongata	Mucous membrane (roof of the buccal cavity) Muscles of the lower jaw and hyoid apparattus.
8. Auditory nerve	—	Somatic sensory nerve	Lateral parts of medulla oblongata	Internal ear (auditory organ)
9. Glossopharyngeal	Sends a branch to the facial nerve.	Mixed nerve (Visceral sensory and visceral motor).	Lateral parts of medulla oblongata.	Mucous membrance of tongue, pharynx and muscles of the hyoid.
10. Vagus nerve	a. Cutaneous b. Cardiac c. Laryngeal d. Pulmonary e. Gastric	Mixed nerve (Somatic, visceral sensory and visceral motor) Sensory nerve Motor nerve Mixed nerve motor nerve mixed nerve	Lateral parts of medulla oblongata	Skin of the dorsal body wal Heart Laryngotracheal chamber Lungs Stomach
11. Spinal accessory		Motor nerve	Medulla	Muscles of neck
12. Hypoglossal		Motor nerve	Medulla	Muscles of tongue