Axial Skeleton Flashcards
How many bones are in the axial skeleton
80
Bones in Skull, and distribution
- 22 total
- Neurocranium , 8
- Viscercranium, 14
How many associated bones and what are they
- Total 7
- Auditory ossicles, 6
- Hyoid bone, 1
How many bones in vertebral column and where are they
- Total 26
- Vertebrae 24
- Sacrum 1
- Coccyx 1
How many bones in thoracic cage and where
- Total 25
- Sternum 1
- Ribs 24
External Skull consists of
- Skull
- Cranium
- skull without mandible
- Neurocranium or cranial vault
- Viscercranium or facial skeleton
- Auditory ossicles
- Malleus 2
- Incus 2
- Stapes 2
- Not pictured Hyoid
Cervical Vertebrae # and landmarks
7
Bifid spinous process
Tranverse foramina all vertebrae have
Atlas articulates with, joint, lacks, landmarks
C1
Articulates with occipital condyles
Atlato-occipital joint
No body or spinous process
Anterior and posterior tubercles
Lateral masses
Axis, joint, landmarks
C2
Atlantoaxial joint
Odontoid process or dens
Vertebral Prominens
C7
transition to thoracic vertebrae
Thoracic Vertebrae, #, landmarks
12
Costal facets for ribs
Lumbar vertebrae #
5
Sacrum landmarks
Base
apex
Median sacral crest
Posterior sacral foramina
Intervertebral disc, in and out
Annulus Fibrosus around
Nucleus pulposus, inside
Herniated discs may happen
Ribcage
Pairs and total
true false floating
Other associated bones
Ribs, 12 pairs, 24 total
7 pairs of true ribs
5 pairs of false ribs
2 pairs of false ribs are floating
Sternum
Costal cartilage
Sternum
Manubrium T4
Jugular (suprasternal) notch T2
Body
Costal notch
Xiphoid process T9
Ribs landmarks
Head
Neck
Costal tubercle
Costal angle
Body
