AP Lab skeleton
Which bone has the least amount of spongy bone relative to its total volume?
Parietal (Skull Bone)
Made almost entirely of compact bone.
Red Bone Marrow
Site of blood cell formation.
a fibrous membrane covering the of bones
Scientific term for bone end.
Contains fat in adult bones.
Growth plate remnant
What differences between compact & spongy bone can be seen with the naked eye?
Compact bone is very smooth, dense & thick.
Spongy bone has a lot of open spaces.
What is the function of the organic matrix in bone?
Gives bone flexibility & strength
Name the important organic bone components.
Collagen fibers, osteocytes.
What is the function of the calcium salts?
Gives bone hardness & compressional strength.
The skull is one of the major components of the axial skeleton. Name the other two. Then explain what structures do each of these component areas protect.
Ribcage & Vertebral Column
Brain, Spinal Cord, Heart & lungs.
Interlocking immovable joint.
With one exception, the skull bones are joined by sutures. Name the exception.
Name 5 bones of the cranium
Frontal, Occipital, Temporal, Ethmoid, Spenoid
What is the orbit?
Bone forming anterior cranium?
Bony skeleton of nose
Posterior roof of mouth
Bone pair united by sagittal suture
Site of jugular foramen & carotid canal
Contains a saddle that houses pituitary gland
Allows tear ducts to pass
Forms most of hard pallet
Superior & medial nasal conchae are part of this bone
Site of external auditory meatus
Temporal (ear canal)
Has greater & lesser wings
Its holey plate allows olfactory fibers to pass
Facial bone that contains sinus
Three cranial bones containing paranasal sinus
Frontal, Ethnoid, & Spenoid
Its oval shaped protrusions articulate with the atlas
Spinal cord passes through a large opening bone
Forms the chin
Inferior part of the nasal septum
Contain alveoli bearing teeth
Maxilla & Mandible
Vertebral type with a forked spinous process
Cervical , Vertebra
Pivots on C2; lacks a body
Atlas or C1
Bear facets for articulation with ribs; form part of bony thoracic cage
Forms a joint with the hip bone
Vertebra with block like body & short stout spinous process
Articulates with the occipital consults
5 components; unfused
12 components unfused
5 components fused
Major components of thorax (excluding the vertebral column)
Ribs & Sternum