Identify the following bones on the image
View Answer
Name the boundaries of the infratemporal fossa.
"
The boundaries of the infratemporal fossa are:
- Medial : Lateral pterygoid plate
- Lateral : Mandible ramus and coronoid process
- Anterior : Maxilla
- Posterior : Tympanic plate, mastoid and styloid processes of the temporal bone
Name the muscles found in the infra temporal fossa.
"
The muscles found in the infra temporal fossa are the:
- Medial pterygoid
- Lateral pterygoid
- Temporalis muscle
Name the vessels in the infra temporal fossa.
"
Vessels in the infra temporal fossa are the:
- Maxillary artery
- Pterygoid venous plexus
Name the nerves in the infra temporal fossa.
"
The nerves coursing through the infratemporal fossa are the:
- Mandibular Nerve
- Chorda tympani
- Otic ganglion
- Auriculotemporal nerve
- Inferior alveolar nerve
- Lingual nerve
Name the muscles of mastication.
"
The four muscles of mastication are:
- Temporalis
- Masseter
- Lateral Pterygoid
- Medial Pterygoid
What is the nerve supply to the muscles of mastication?
The muscles of mastication are supplied by the mandibular division (CN V3) of trigeminal nerve.
Describe the course of the retromandibular vein.
The retromandibular vein is formed by the union of the superficial temporal and maxillary veins. This descends within the parotid gland deep to the facial nerve between the mandible and sternocleidomastoid muscle. It then divides into anterior and posterior branches. The anterior branch joins the anterior facial vein to form the common facial vein, which drains into the internal jugular vein. The posterior branch unites with the posterior auricular vein to form the external jugular vein, which drains into the subclavian vein.
Describe the course of the facial artery.
The facial artery arises in the carotid triangle from the external carotid artery. It passes obliquely beneath the digastric and stylohyoid muscles and then curves upwards over the body of the mandible. It then passes forwards and upwards across the cheek to the angle of the mouth, ascends along the side of the nose and ends at the medial commissure of the eye as the angular artery.
What are the branches of the facial artery?
"
The branches within the neck include the:
- Ascending palatine artery
- Tonsillar artery
- Submental artery
- Branch to the submandibular gland
The facial branches include the:
- Inferior labial artery
- Superior labial artery
- Lateral nasal branch
- Angular artery