– styloid process,
– stylomastoid foramen (external opening of the facial canal),
– jugular fossa,
– petrosal fossula, featuring. tympanic canaliculus,
– carotid canal,
– musculotubal canal, divided into. semicanal for tensor tympani muscle.
Subsequently, What very small bones are housed in the petrous region of the temporal bone?
Tympanic bone: the tympanic part: this is derived from the angular bone of the reptilian lower jaw. Periotic bone: the petrous and mastoid parts. Two parts of the hyoid arch: the styloid process. In the dog these small bones are called tympanohyal (upper) and stylohyal (lower).
Also, What does the petrous part of the temporal bone contain?
The petrous part is pyramidal shaped, and lies at the base of temporal bone. It contains the inner ear.
What are the three parts of the temporal bone?
The temporal bone consists of four parts— the squamous, mastoid, petrous and tympanic parts.
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What are key landmarks of the temporal bone?
The surface landmarks on the squamous portion: 1, temporal fossa; 2, supra-meatal crest; 3, temporal line; 4, external acoustic meatus; 5, supra-meatal triangle (Macewen’s triangle); 6, middle temporal artery; 7, squamo-mastoid suture; 8, mandibular fossa (glenoid fossa); 9, articular eminence; 10, zygomatic process; …
How many temporal bones are there?
The temporal bones are two major bones in the skull, or cranium.
What is the petrous part of the temporal bone?
The petrous part of the temporal bone is pyramid-shaped and is wedged in at the base of the skull between the sphenoid and occipital bones. Directed medially, forward, and a little upward, it presents a base, an apex, three surfaces, and three angles, and houses in its interior, the components of the inner ear.
What bone contains the petrous ridge?
temporal bone
Why is it called the temporal bone?
Etymology. Its exact etymology is unknown. It is thought to be from the Old French temporal meaning “earthly,” which is directly from the Latin tempus meaning “time, proper time or season.” Temporal bones are situated on the sides of the skull, where grey hairs usually appear early on.
What are the 3 regions of the temporal bone?
– the squamous region, which is the largest.
– the mastoid region.
– the petrous region.
– the tympanic region.
What are the features of the temporal bone?
The temporal bone contributes to the lower lateral walls of the skull. It contains the middle and inner portions of the ear, and is crossed by the majority of the cranial nerves. The lower portion of the bone articulates with the mandible, forming the temporomandibular joint of the jaw.
Why is the temple called the Temple?
The word temple also refers to a place of worship. The origin of this meaning lies in the Latin word ”templum” which means to cut or separate. This implies that a temple in which God is worshipped is sacred and is separate from its ordinary surroundings.
What are the main important markings of the temporal bones?
– Squamous part. Located inferior to the squamous suture.
– Zygomatic process. Located at squamous part; a bridge like projection that articulates with the zygomatic bone.
– Mandibular fossa. …
– Tympanic part. …
– External acoustic meatus. …
– Styloid process. …
– Petrous part. …
– Jugular foramen.
What are the three regions of the temporal bone?
– Squamous. Also known as the squama temporalis, this is the largest part of the temporal bone. …
– Zygomatic Process. The zygomatic process arises from the lower part of the squama temporalis. …
– Tympanic. …
– Styloid Process. …
– Petromastoid.
What are the 22 skull bones?
The skull (22 bones) is divisible into two parts: (1) the cranium, which lodges and protects the brain, consists of eight bones (Occipital, Two Parietals, Frontal, Two Temporals, Sphenoidal, Ethmoidal) and the skeleton of the face, of fourteen (Two Nasals, Two Maxillae, Two Lacrimals, Two Zygomatics, Two Palatines, Two …
What makes a temple a temple?
A temple (from the Latin ‘templum’) is a structure usually built for the purpose of, and always dedicated to, religious or spiritual activities including prayer, meditation, sacrifice and worship.
Where is the petrous ridge located?
temporal bone
Why is it called temporal bone?
Etymology. Its exact etymology is unknown. It is thought to be from the Old French temporal meaning “earthly,” which is directly from the Latin tempus meaning “time, proper time or season.” Temporal bones are situated on the sides of the skull, where grey hairs usually appear early on.
How many parietal bones are there?
two bones
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