Skull Flashcards

1
Q

What two bones form the dorsal cranium?

A

Frontal and parietal

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2
Q

What is the median ridge on the dorsal skill formed by parietal and interparietal bones?

A

External Sagittarius crest

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3
Q

The ____________ lines extend fro the external occipital protuberance to the zygomatic process of the frontal bone

A

Temporal

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4
Q

What marks the edge between the dorsal and caudal surfaces of the skill?

A

Nuchal crest

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5
Q

The caudal end of the external sagittal crest is the ?

A

External occipital protuberance

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6
Q

What convex surface lies cranially to the nuchal crest, and causally to the zygomatic process of the temporal bone?

A

Temporal fossa

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7
Q

What are the three parts of the temporal bone?

A

Squamous, tympanic, and petrous

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8
Q

The _____________ part of the temporal bone contains part of the temporal fossa and the zygomatic process

A

Squamous

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9
Q

The ventrolateral surface of the skull, cranial to the temporal bone, is formed by what two bones?

A

Basisphenoid and presphenoid

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10
Q

What bone bears three upper incisor teeth?

A

Incisive bone

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11
Q

What is bound ventrolaterally by the incisive bone and dorsally by the nasal bone?

A

Nasal pasture

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12
Q

Cavity where the eye is situated?

A

Orbit

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13
Q

What forms the orbital medial margin?

A

Frontal, lacrimal, zygomatic

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14
Q

What forms the lateral orbital margin?

A

Orbital ligament

Frontal process of zygomatic to the zygomatic

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15
Q

What fossa is located ventral to the orbit and serves as the attachement site for a muscle of mastication?

A

Pteygopalatine fossa

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16
Q

What are the three openings in the caudal orbit?

A

Optic canal, orbital fissure, rostral alar canal

17
Q

The orbital fissure is formed by the articulation of what two bones?

A

Presphenoid

Basisphenoid

18
Q

In the rostral part of the pterygopalatine fossa, what two foramina are located, dorsal to ventral?

A

Caudal palatine foramen

Sphenopalatine foramen

19
Q

What are the caudal and rostral openings of the infraorbital canal?

A

Caudal- maxillary foramen (cranial orbit)

Rostral- infraorbital foramen (maxillary bone)

20
Q

What bone forms the caudal third of the ventral cranium?

A

Basiocciptial

21
Q

What part of the skull articulates with he atlas?

A

Occipital condyle

22
Q

What re the ventral projections of the occult it also bones that articulates with the tympanic bulla?

A

Paracondylar process

23
Q

What is the enlargement of the tymporal bone which encloses the middle ear cavity and its ossicles?

A

Tympanic bulla

24
Q

What is the opening on the lateral side of the tympanic bulla?

A

External acoustic meatus

25
What cartilage attaches the auricle to the external acoustic meatus?
Annular cartilage
26
What cartilage redirects the force of the muscles controlling the ear?
Scutiform cartilage
27
What part of the temporal bone contains the membranous and bony labyrinth of the inner ear?
Petrosal part
28
What contains the cochlear window and lies under the tympanic bulla?
Promontory
29
What is the only process of the petrous part of the temporal bone that can be viewed externally and serves as attachment for cleidocephalicus, sternochephalicus, and splenious muscles
Mastoid process