Flashcards in 3.1 Osteology and Radiography of the Cervical Spine Deck (25)
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1
What is the alternative name for the C1 vertebrae?
Atlas
2
What is the alternative name for the C2 vertebrae?
Axis
3
What is special about the atlas bone?
No body or spinous process
4
What is special about the axis bone?
Odontoid peg (Dens)
5
What is the function of the Dens?
Allows movement of the head
6
What movement does the axis allow?
Horizontal movement
7
What movement does the atlas allow?
Vertical movement
8
What is special about the C7 vertebra?
Prominent, non-bifid spinous process, large transverse process
9
Describe some features of a 'normal' cervical vertebrae
Body
Triangle shaped vertebral foramen
Transverse foramen
Bifid spine
10
What is a burst fracture (Jefferson)?
Break on both sides of atlas
Caused by falling head first from height
11
What is a hangman's fracture?
Hyperextension of the head on the neck. Lamina of axis breaks
12
How many bones make up the skull?
22
13
How are the bones of the skull connected?
Sutures or symphyses
14
Which main bones make up the 'box' of the skull?
Frontal
Parietal
Temporal
Sphenoid
Occipital
15
What is the major opening into the skull called?
Foramen magnum
16
What type if bones are the skull bones?
Flat bones- dense and strong
17
Describe the composition of the cranium
Tri-lamina bony structure- 2 hard plates with a spongy bone plate (Dipoe) between
18
What is the Calvaria?
Bony housing of the brain
19
What is the name of the two suture points in the cranial cap?
Bregma point
Lambda point
20
Where is the frontal bone located?
Anterior part of skull vault, upper border of orbital margins, roof of orbit
21
Where is the parietal bone located?
Large part of the side and roof of the cranial cavity
22
Where is the ethmoid bone located?
Midline of the anterior cranial fossa, projects into the nose
23
Describe the sphenoid bone
Made up of body, 2 wings and the pterygoid process
24
Describe the connections between the bones in a neonate skull
Cranial sutures wide, bones held together by thick connective tissue (fontanelles)
25
