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| | | |
| ===Temporal Bone=== | | ===Temporal Bone=== |
− | * | + | |
| + | *Composed of squamous, petrosal and tympanic parts |
| + | |
| + | *Lateral wall of the cranial cavity |
| + | |
| + | *Articulates with the frontal, pareital and sphenoid bones |
| + | |
| + | *Zygomatic process |
| + | **On squamous part |
| + | **Joins the temporal process of the zygomatic bone to form the zygomatic arch |
| + | **Forms the articulating surface of the [[Mastication#Jaw Articulation|temperomandibular joint]] |
| + | |
| + | *Articular tubercle present |
| + | |
| + | *Mandibular fossa present |
| + | |
| + | *Occipital process and retrotympanic process surrounds the external acoustic meatus |
| + | |
| + | *Petrosal part encloses the inner ear |
| + | **Internal acoustic meatus present |
| + | **Forms mastoid process ventrally |
| + | **Styloid process present which attaches the [[Hyoid Apparatus - Anatomy & Physiology|hyoid apparatus]] |
| + | **Stylomastoid foramen present |
| + | |
| + | *Tympanic part is the ventral section of the temporal bone |
| + | **Tympanic bulla present |
| + | **Tympanic membrane separates tympanic cavity from external acoustic meatus |
| + | **Encloses auditory ossicle dorsally |
| + | **Musculotubal canal where tensors of the [[Soft Palate - Anatomy & Physiology#Musculature and Innervation|soft palate]] originate |
| | | |
| ===Frontal Bone=== | | ===Frontal Bone=== |
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| *Alar Canal | | *Alar Canal |
| **Rostral border of the basisphenoid bone at the base of the pterygoid processes | | **Rostral border of the basisphenoid bone at the base of the pterygoid processes |
| + | |
| + | *Internal Acoustic Meatus |
| + | **Medial surface of the petrosal part of the temporal bone |
| + | |
| + | *Stylomastoid Foramen |
| + | **Situated on the petrosal part of the temporal bone |
| | | |
| ==Species Differences== | | ==Species Differences== |
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| | | |
| *No foramen lacernum | | *No foramen lacernum |
| + | |
| + | *Styloid process absent |
| [[Image:Lion skull.jpg|thumb|right|150px|Feline skull (Lion) - Copyright RVC]] | | [[Image:Lion skull.jpg|thumb|right|150px|Feline skull (Lion) - Copyright RVC]] |
| ===Feline=== | | ===Feline=== |
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| | | |
| *No foramen lacernum | | *No foramen lacernum |
| + | |
| + | *Styloid process absent |
| [[Image:Horse Skeleton.jpg|thumb|right|150px|Horse Skeleton - Copyright Nottingham]] | | [[Image:Horse Skeleton.jpg|thumb|right|150px|Horse Skeleton - Copyright Nottingham]] |
| | | |
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Line 248: |
| | | |
| *No foramen lacernum | | *No foramen lacernum |
| + | |
| + | *Petrosal and tympanic parts of the temporal bone fused to the squamous part |
| [[Image:Pig skull.jpg|thumb|right|150px|Pig skull showing tusks - Copyright RVC]] | | [[Image:Pig skull.jpg|thumb|right|150px|Pig skull showing tusks - Copyright RVC]] |
| ===Porcine=== | | ===Porcine=== |
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| | | |
| *High caudal part of the skull | | *High caudal part of the skull |
| + | |
| + | *Styloid process absent |
| [[Image:Bird skull.jpg|thumb|right|150px|Bird skull - Copyright RVC]] | | [[Image:Bird skull.jpg|thumb|right|150px|Bird skull - Copyright RVC]] |
| ===Avian=== | | ===Avian=== |