Face l General anatomy MCQs ( multiple choice question) for dental students

Face in human anatomy l General anatomy MCQs ( multiple choice question) for dental students 

 Face in human antomy

Arterial supply of face:

1- Facial artery (in the face):

Ø It arises from anterior aspect of ECA.

Ø It enters the face along the antero-inferior angle of masseter muscle, 1 inch in front of the angle of the mandible.

Ø It ascends on buccinator, in front of the facial vein in a wavy course (to allow for facial expression).

Ø It runs 1 cm behind the mouth angle, ala of the nose.

Ø It ends near medial angle of the eye as angular artery.

Ø Branches of the facial artery in the face:

1. Inferior labial: To lower lip.

2. Superior labial: To upper lip, gives septal branch to nasal septum.

3. Nasal: To the nose.

4. Angular: To the medial angle of the eye.

 

2- Transverse facial artery:

¦ It arises from superficial temporal artery.

¦ It passes transversely over masseter, below the zygomatic arch & above the parotid duct.

¦ ends by anastomosing with other arteries which supply the face.

 

3- Zygomatico-orbital: (From superficial temporal artery). It supplies the orbicularis oculi.

4- Infra orbital: emerges from infraorbital foramen , termination of the maxillary artery which comes out from the infra-orbital foramen. It is divides into 3 branches:

a- Palpebral branch for the lower eye lid.

b- Nasal branch for the side of nose.

c- Labial branch for the upper lip.

 

5- Buccal: arises from the maxillary artery , It supplies the skin of the cheek.

6- Mental: It arises from the inferior alveolar artery (from maxillary artery) , to the chin & lower lip.

7- Supratrochlear & supraorbital branches of ophthalmic A. to upper eye lid.

8- Dorsal nasal branches of ophthalmic A. to dorsum of the nose.

Lymphatic drainage of the face:

œ upper part : 

• upper eyelids ,front of auricle & lateral part of cheek drain into the preauricular LNs

œ middle part : 

• lower eyelids , the nose ,medial part of cheek, upper lip and lateral parts of lower lip → drain into the submandibular LNs .

œ lower part : 

• central part of the lower lip & chin drains into the submental LNs

 

submandibular LNs ,preauricular LNs &submental LNs drain into upper deep cervical LNs .

 

Dangerous area of the face:

• Triangular area in the middle part of the face around the nose and upper lip. It is dangerous because infection in this area can spread & reach the cavernous sinus ( leading to thrombosis ) through :

Ø Facial vein → deep facial vein → pterygoid venous plexus → emissary vein through foramen ovale → cavernous sinus.

Ø Facial vein → Ophthalmic veins which end in the cavernous sinus