Artery felt at anterior border of masseter against maxillary:

a. Facial artery
b. Maxillary artery
c. Posterior auricular artery
d. Superficial temporal artery



Branches external carotid artery : mnemonic

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Ans: a. Facial artery

Carotid artery bifurcation

Common carotid artery bifurcates at the level of upper border of thyroid cartilage, opposite the disc b/w C 3 & C 4 vertebrae.

It is usually palpated against ' Chassaignac tubercle' , ant tubercle on the transverse process of C 6 vertebra.

Trigeminal nerve- branches

Vertebral Artery- Parts

Vertebral artery is divided into the following four parts:

V 1 : Origin to transverse process of C6

V 2 : Thru f. transversaria of upper 6 cervical vertebrae.

V 3 : Sub- occipital triangle.

V 4 : Passes thru foramen magnum, pierces dura and enters subarachnoid space. 

Divisions of vertebral artery

Foramen magnum

The structures passing through the foramen magnum are:

Anterior Part:      1. Apical ligament of dense.
                            2. Vertical band of cruciate ligament
                            3. Membrana tectoria

Subarachnoid Space:

1. Vertebral artery
2. Ant. Spinal artery
3. Post. Spinal artery
4. Spinal accessory nerve.
5. Sympathetic plexus around vertebral arteries.

Posterior part:  1. Lower part of medulla.
                         2. Meninges.