5.4 Axial Skeleton Flashcards
Two major subdivisions of bone are
The axial skeleton and the appendicular skeleton
Axial skeleton consists of
Skull (Cranium), spine (vertebral column), and the sternum&ribs (bony thorax)
The appendicular skeleton consists of
Pectoral girdle (shoulder), arms, pelvic girdle, and legs
Foramen magnum is
The hole where the spinal cord goes through to the brain
Cochlea is in the bony labyrinth of the temporal bone and converts
Sound waves into action potential
The other inner ear structure that detects motion and equilibrium
Vestibular apparatus
The master gland of the body is the
Pituitary gland (connection between nervous and endocrine systems)
Sella turcica
Pocket behind the sphenoid bone, Where we find the pituitary gland
Perpendicular plate forming the septum
The ethmoid bone
Nasal concha
Hold soft tissue where turbinates are housed for filtration
Paranasal sinuses
Lighten bones of the skull, increase the volume of the nasal cavity, holds most air processing
Where are the paranasal sinuses:
- Frontal sinus
- Maxillary sinus
- sphenoid sinus
- ethmoid sinus
How many cervical vertebrae
7
Number of thoracic vertebrae
12
Number of lumbar vertebrae
5
