Axial Skeleton Sutures and Landmarks of Skulllwcmrstaylor.yolasite.com/resources/Axial...

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Axial Skeleton Sutures and Landmarks of Skull

Transcript of Axial Skeleton Sutures and Landmarks of Skulllwcmrstaylor.yolasite.com/resources/Axial...

Page 1: Axial Skeleton Sutures and Landmarks of Skulllwcmrstaylor.yolasite.com/resources/Axial Skeleton...Axial Skeleton Sutures and Landmarks of Skull Coronal Suture Connects the frontal

Axial Skeleton Sutures and Landmarks of Skull

Page 2: Axial Skeleton Sutures and Landmarks of Skulllwcmrstaylor.yolasite.com/resources/Axial Skeleton...Axial Skeleton Sutures and Landmarks of Skull Coronal Suture Connects the frontal

Coronal Suture Connects the frontal and the parietal bones

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Lambdoid Suture Connects the occipital and parietal bones

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Occipitomastoid Suture Connects the temporal and occipital bones

Page 5: Axial Skeleton Sutures and Landmarks of Skulllwcmrstaylor.yolasite.com/resources/Axial Skeleton...Axial Skeleton Sutures and Landmarks of Skull Coronal Suture Connects the frontal

Sagittal Suture Connects the parietal bones

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Squamous Suture Connects the temporal and parietal bones

Page 7: Axial Skeleton Sutures and Landmarks of Skulllwcmrstaylor.yolasite.com/resources/Axial Skeleton...Axial Skeleton Sutures and Landmarks of Skull Coronal Suture Connects the frontal

Axial Skeleton Landmarks of Skull

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Carotid Canal Temporal – Anterior to the jugular foramen, transmits

the internal carotid artery into the cranial cavity.

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Crista Galli Ethmoid – “rooster’s comb” – triangular process. The

outermost covering of the brain (dura mater) attaches here and helps secure the brain in the cranial cavity.

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External Occipital Protuberance Occipital – Prominent midline projection. Secures the ligament

that connects the vertebrae of the neck to the skull – which helps to support the head

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Foramen Magnum Occipital – Large hole in the base. The inferior part of

the brain connects with the spinal cord.

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Hard Palate Maxillae and Palatine – bony roof of the mouth

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Jugular Foramen Junction of temporal and occipital – allows for the

passage of the internal jugular vein and three cranial nerves.

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Mastoid Process Temporal Bone – Lump just posterior to the ear.

Anchoring site for neck muscles.

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Mental Foramen Mandible – Openings on lateral sides. Allow blood

vessels and nerves to pass to the skin of the chin and lower lip.

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Occipital Condyle Occipital – Rocker-like, on either side of foramen magnum.

Articulate with the first vertebra (atlas) to allow nodding movement of head.

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Orbit Frontal, sphenoid, zygomatic, maxilla, palatine,

lacrimal, and ethmoid. Bony cavity where eyes are encased.

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Paranasal Sinuses Sphenoid, frontal, ethmoid, and maxillary – mucosa-

lined, air-filled sinus. Helps to warm and humidify air. Lightens skull. Resonating chamber for speach.

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Sella Turcica Sphenoid – Saddle shaped prominence. “Turk’s saddle”

– encloses the pituitary gland

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Styloid Process Temporal – needle-like process, medial to mastoid process.

Attachment point for tongue and neck muscles and for the ligament that secures the hyoid bone to the neck.

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Zygomatic Arch Temporal and zygomatic – bony prominence of your

cheek.

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Zygomatic Process Temporal – bar-like projection, helps to form the

zygomatic arch (cheekbone).