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
Q

What cartilage attaches the auricle to the external acoustic meatus?

A

Annular cartilage

26
Q

What cartilage redirects the force of the muscles controlling the ear?

A

Scutiform cartilage

27
Q

What part of the temporal bone contains the membranous and bony labyrinth of the inner ear?

A

Petrosal part

28
Q

What contains the cochlear window and lies under the tympanic bulla?

A

Promontory

29
Q

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

A

Mastoid process