pt1- inferior view of external skull

List the bones of the skull we can see exteriorly from the inferior view

• zygomatic

• vomer

• temporal

• sphenoid

• occipital

• palatine

• maxilla

At the anterior part of the skull’s inferior aspect is the _____ _____, bordered by the ________ _____ __ ___ ______ with its maxillary teeth

Hard palate, alveolar process of the maxilla

The posterior edge of the hard palate forms the inferior border of two funnel shaped cavities, the ______ _____ ______ or chonae

Posterior nasal apertures

The lateral borders of the posterior nasal apertures are formed on each side by the ______ ______ of which bone

Pterygoid process, sphenoid bone

Each pterygoid process consists of what two plates?

Medial pterygoid plate and lateral pterygoid plate

The depression between the medial and lateral pterygoid plates is the

Pterygoid fossa

At the inferior part of the medial plate of the pterygoid process is a thin curved process

Hamulus

The foramen ovale is a large anterior oval opening on the sphenoid bone for which nerve

Mandibular nerve (3^rd division) of the 5th CN trigeminal

The larger anterior oval opening on the sphenoid bone is the

Foramen ovale

The adjacent smaller posterior opening to the foramen ovale is the

Foramen spinosum

The foramen spinosum receives its name from the nearby (angular) spine of the ______ bone, which is at the posterior extremity of the sphenoid bone

Sphenoid

Also on the external surface of the skull is the large, irregularly shaped

Foramen lacerum

Posterolateral to the foramen lacerum is a round opening in the petrous part of the temporal bone, the

Carotid canal

A pointed bony projection is noted lateral and posterior to the carotid canal

Styloid process

Immediatly posterior to the styloid process is the _______ ______, an openening through which the seventh CN (facial) exits from the skull to the face

Stylomastoid foramen

An opening just medial to the styloid process

Jugular foramen

The largest opening of the occipital bone

Foramen magnum

Which structures pass through the foramen magnum?

Spinal cord

vertebral arteries

CN XI- accessory