12 pairs of cranial nerves

Answer 1

There are 12 cranial nerves, they are as followed;

(I) Olfactory

(II) Optic

(III) Oculomotor

(IV) Trochlear

(V) Trigeminal

(VI) Abducens

(VII) Facial

(VIII) Vestibulocochlear

(IX) Glossopharyngeal

(X) Vagus

(XI) Accessory

(XII) Hypoglossal

Answer 2

There are 12 cranial nerves. These nerves consist of the optic nerve, the olfactory nerve, the oculomoter nerve, the trochlear nerve, the trigeminal nerve, the abducent nerve, the facial nerve, the vestibulocochlear nerve, the glossopharyngeal nerve, the vagus nerve, the spinal accessory nerve, and the hypoglossal nerve.

Answer 3

Cranial Nerve:

Origin/ Location

Organs

I Olfactory

Telencephalon

smell

II Optic

Diencephalon

vision

III Oculomotor

Midbrain

eyelid and eyeball movement

IV Trochlear

Midbrain

innervates superior oblique

turns eye downward and laterally

V Trigeminal

Pons

chewing

face & mouth touch & pain

VI Abducens

Posterior margin of Pons

turns eye laterally

VII Facial

Pons(cerebellopontine angle) above olive

controls most facial expressions

secretion of tears & saliva

taste

VIII Vestibulocochlear

(auditory)

Lateral to CN VII (cerebellopontine angle)

hearing

equillibrium sensation

IX Glossopharyngeal

Medulla

taste

senses carotid blood pressure

X Vagus

Posterolateral sulcus ofMedulla

senses aortic blood pressure

slows heart rate

stimulates digestive organs

taste

XI Spinal Accessory

Cranial and Spinal Roots

controls trapezius & sternocleidomastoid

controls swallowing movements

XII Hypoglossal

Medulla

controls tongue movements

Answer 4

There are many many millions of nerves, each one is a single cell but these are more correctly termed neurons. It is estimated that there are up to 100 billion neurons in the human brain. It is likely that there are more neurons in the human body than any other cell type. There are also the main named 'nerves'. These are the collections of individual cells that all follow the same anatomic route through the body (within a single connective tissue pipe or sheath); for example the sciatic nerve and the radial nerve. There are three main types of nerves and, according to Wikipedia, 214 named nerves. Allowing for bilateral symmetry one could expect the answer to your question to be 428. However there are many unnamed nerves, such as those that run to small sensors in the skin or the periosteum, and many that are repeated many more times than twice (the intercostal nerve for example). So the answer in fact must be that there are many thousands, but quite possibly millions, of bundles neurons. It is said that there are enough nerves in the human body that if all the other cells were somehow removed the network of fine nerves would be numerous enough to enable you to easily recognize the individual concerned and to recognize every tissue layer in his or her body.

Answer 5

Optic, olfactory, vagus, occulomotor, facial, glossopharyngeal,

Answer 6

there are 12 cranial nerves,olfactory,optic,oculomotor,trochlear,trigeminal,abducent,facial,acostic,glossophyrangeal,vagus,accessory and hypoglosal,how could i remember it?

Answer 7

pns