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Name the two skeletal system divisions?
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How many bones are in the skull?
- 22 bones
- 8 form the cranium
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Name the five sutures in the skull?
- Coronal
- Lambdoidal
- Sagittal
- Squamosal
- Frontonasal
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Define sutures?
- Immovable where
- Bone meets bone
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Where is the sagittal suture located?
Between 2 parietal bones
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Where is the squamosal suture located?
Above temporal
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Where is the frontonasal suture located?
Where frontal meets nasal
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How are processes named?
- "For the bone they reach for"
- & not the bone they are apart of
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Name the two visceral bones?
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Where is hyoid bone located?
- The hyoid bone provides attachment
- To the muscles of the floor of the mouth
- & the tongue above, the larynx below,
- & the epiglottis and pharynx behind
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The hyoid bone is unique in what way?
- It is the only bone in the human
- Skeleton that is not articulated with
- Any other bone.
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Where are the auditory ossicles located?
In the temporal bone
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Name the four fontanels in the fetal skull?
- Anterior
- Posterior
- Sphenoid
- Mastoid
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What are the six regions of the spinal column?
- Atlas
- Axis
- Thoracic
- Lumbar
- Sacrum
- Coccyx
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What is the atlas of the spinal column? What is it's function? What does it articulate with?
- C1
- Permits nodding "yes", prevents twisting
- Articulates with occipital bone
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What is the axis of the spinal column?
- C2
- Permits head to turn from side to side
- "No" motion
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Why does shaking a child cause damage to the spinal cord?
- Fusion between the dens and
- The axis (C2) is not complete
- In a child
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How many veterbrae bones are in the thoracic region of the spinal column? What are they attached to?
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How many bones are in the lumbar region of the spinal column? Where is it located?
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How many bones are in the sacrum region of the spinal column? Where are they located?
- 5
- Fused into one structure. Attaches
- axial skeleton to pelvic girdle
- & lower appendicular skeleton
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How many bones are in the coccyx region of the spinal column?
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What is the dens process?
- A process found on the axis (C2)
- On its anterior surface is an oval or nearly
- Circular facet for articulation with that
- On the anterior arch of the atlas.
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Name the five vertebral features?
- Body
- Vertebral foramen
- Spinous process
- Transverse process
- Transverse foramen
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Define the vertebrae feature, body?
- Seperated by intervertebral discs
- (fibrous tissue between body of vertebrae)
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Define vertebral foramen?
Houses spianl cord
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Define spinous process?
- Projects dorsally
- (back of neck, C7)
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Define transverse process?
- Project laterally
- (on side)
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Define transverse foramen?
- Gives passage, and protects blood
- Vessels to brain
- (only in cervical vertebrae)
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Name the features of a cervical vertebrae?
- Vertebral process
- Vertebral foramen
- Vertebral body
- Spinous process
- Transverse foramen
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Name the six parts of the axial body?
- Skull
- Visceral bones
- Vertebrae
- Thoracic cage
- Ribs
- Sacrum & coccyx
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Name the parts of the appendicular division of the skeleton?
- Pectoral girdle
- Upper limbs
- Pelvic girdle
- Lower limbs
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What does the pectoral girdle connect? What bones does it consist of?
- Upper limbs to the axial skeleton
- Clavicle
- Scapula
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What attaches to the pectoral girdle?
Arm
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Name the bones of the arm?
- Humerus
- Radius
- Ulna
- Carpels, metacarpels, phalanges
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What skeleton system does the pelvic girdle belong to? What bones make up the girdle?
- Appendicular (legs hang)
- 2 (right and left) os coxae
- 3 fused bones
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Name the three fused bones in the pelvic girdle?
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What 4 bones make up the pelvis?
- Right and left os coxae
- Sacrum
- Coccyx
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The leg belongs to which skeletal division?
Appendicular
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Name the bones of the leg?
- Femur
- Patella
- Tibia
- Fibula
- Tarsals, metatarsals. phalanges
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What is the largest bone in the body?
Femur
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What is the tibia located in the body? What is it's function?
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What is unique about the ulnas head?
- It's the only bone where
- The head is distal
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What is true of a fossa or notch?
- There is a process or
- Bone that fits into it
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