ANP 300 Lab 6 - The Skull

Coronal suture

Fuses frontal and parietal bones

Sagittal suture

Fuses parietals

Lambdoid suture

Fuses parietals and occipital

Squamosal suture

Fuses temporal and parietals

Frontal bone

Forehead

Parietal bones

Superior lateral skull

Occipital bone

Posterior bone of the skull

Temporal bone

Inferior lateral bone of the skull

Jugular foramen

Internal auditory meatus

Carotid foramen

Foramen Lacerum

Where the petrous temporal meets the body of the sphenoid

Stylomastoid foramen

Next to the styloid process

Sphenoid

Bat shaped bone embedded in the skull

Optic canals

Transmit optic nerves

Superior Orbital Fissure

Separates lesser wing from greater wing

Transmits:

-CN III

-CN IV

-CN VI

Foramen Rotundum

Just inferior to the medial portion of the superior orbital fissure

Transmits:

-CN V2

Foramen Ovale

Directly behind Foramen Rotundum

Transmits:

-CN V3

Foramen Spinosum

Lateral to Foramen ovale

Transmits:

-Middle meningeal artery

Maxillae

Form floors of orbits and the face below it

Articulates laterally with zygomatic bones

Incisive foramen

Infraorbital foramen

Right below the inferior margin of the orbit

Nasals

Pair of small bones that articulate superiorly with the

Lacrimals

paired little bones that articulate with the maxillae

Zygomatic

Paired bones that form the prominence of the cheeks

- a thin plate extends posteriorly, articulating with the temporal bone to form the zygomatic arch

Ethmoid

unpaired box shaped bone

-Contains superior and middle nasal concha

-articulates with septum at the midline

Inferior Nasal Concha

paired small bones that extend along the lateral walls of the nasal cavity just below the middle nasal concha

-Articulate with the maxillae

Vomer

Thin unpaired bone that forms part of the midline of the nasal septum.

-Articulates inferiorly with the maxillae

-Articulates superiorly with the ethmoid and sphenoid

Palatines

Paired, L-shaped small bones, with vertical and horizontal plates

Mandible

Lower jaw

-Contains roots with alveolar processes

Mental foramen

-transmits CN V

Mandibular foramen

-Path that inferior alveolar nerves enter the mandible through

Name the three parts of the Temporal bone

Squamous portion, Petrous portion, Tympanic ring

Mastoid process

Styloid process

External auditory meatus

Foramen lacerum

-Associated bones: temporal and sphenoid

-Transmits: CN VII

Jugular Foramen

-Associated bones: Temporal and Occipital

Transmits:

-CN, 9,10 and 11

-Internal Jugular

Glenoid Fossa

Articulates temporal bone with Mandible

Stylomastoid Foramen

Associated bones: Temporal

Transmits: CN VII(facial nerve)

Zygomatic process

Bridge between zygomatic's and temporal bone

Carotid Foramen

Associated bones: Temporal

Transmits: Internal Carotid artery

Where us the middle inner ear located?

petrous portion

Greater and lesser wings

Medial and lateral pterygoid plates

Foramen rotundum

Associated Bones: sphenoid bone

Transmits: Maxillary V2

Foramen spinosum

Associated bones: Sphenoid bone

Transmits: middle meningeal

Sella Turica

Medial superior portion of sphenoid

Superior orbital fissure

Associated bones: Sphenoid(B/t greater and lesser wings)

Transmits: CN 3,4,5 and 6

Foramen ovale

Associated bones: Sphenoid

Transmits: V3

The superior and middle conchae are part of which bones?

Ethmoid

Mandible body

Mandible ramus

Mandible coronoid process

Mandibular condyle

Articulates with glenoid fossa

Mental protuberence

Mental foramen

Alveolar process

Mandibular foramen

Genial spine

List the different types of tooth

-how many of each are present

Incisor - 4

Canine - 2

Premolar - 4

Molar - 6

What does the mandibular condyle articulate with?

Temporal bone

What muscle is responsible for winking?

Orbicularis occuli

What muscle is responsible for puffing out your cheeks?

Obicularis oris

What muscle is responsible for raising your eye brows?

Frontalis

What muscle is responsible for smiling?

Zygomacticus major

What three muscles in the head close the mouth?

Masseter, lateral pterygoid, medial pterygoid

What is the most important muscle for opening the mouth?

Lateral Pterygoid

What are the two main functions of the tensor veil palatini and levator veil palatini?

Closes off nasopharynx

Opens auditory tube

Maxillary sinus

Where mucous formulates then drains into the nasal cavity in times of sick

Nasal Conchae

Folds of bone inside the nasal cavity

Auditory hiatus

In the lateral wall of the nasopharynx and opens up into the auditory tube

-connects middle eat to nasopharynx

Hard palate

the roof of the oral cavity, made up of maxillae and Palatine

Soft palate

Separates oropharynx from nasopharynx

Palatoglossal fold

on either side/infront of soft palate

Palatine tonsil

bumpy shit inside the soft palate(D)

Lies between palatoglossal and palatopharyngeal folds

Palatopharyngeal fold

Inferio-superior to palatine tonsils

Nasal septum

Formed by ethmoid and vomer