the skeletal system
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The Skeletal System. Overview And The Skull. The Skeletal System. Includes the following: Bones (206) Cartilages Ligaments. Functions. Support and protection Storage of calcium Blood cell production Movement. Two Divisions. Axial

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the skeletal system

The Skeletal System

Overview

And

The Skull

the skeletal system2
The Skeletal System
  • Includes the following:
  • Bones (206)
  • Cartilages
  • Ligaments
functions
Functions
  • Support and protection
  • Storage of calcium
  • Blood cell production
  • Movement
two divisions
Two Divisions
  • Axial
  • Bones associated with skull, thorax and vertebral column
  • 80 bones
slide5
2. Appendicular
  • Bones associated with extremities and shoulder and hip joints
  • 126 bones
  • 80 + 126 = 206
breakdown axial
Breakdown (Axial)
  • Skull – 22
  • Auditory ossicles – 6
  • Hyoid – 1
  • Thoracic cage – 25
  • Vertebral column – 26
  • Total = 80
the skull
The Skull
  • 22 bones
  • Cranial – 8
  • Those in direct contact with the brain
  • Facial – 14
  • Those not in contact w/ the brain
the skull12
The Skull

cranial

facial

sutures
Sutures

Immovable

joints

between

skull bones

5 sphenoid
5. Sphenoid
  • Center bone of the skull
  • Most skull bones articulate with it.
  • List the bones that do and those that don’t!
sphenoid disarticulated and posterior
Sphenoid(disarticulated and posterior)

2 large wings

2 small wings

2 feet

the orbit65
The Orbit

What bone(s) form:

  • The superficial rim (SIML)
  • The floor
  • The roof
  • The interior walls (PML)
8 mandible71
8. Mandible
  • Only bone of skull to have moveable joint
  • Temporomandibular joint (TMJ)
  • Articulates in the mandibular fossa of the temporal bone
8 mandible73
8. Mandible

Mandibular foramen

hyoid
Hyoid

Associated with movements of tongue

Doesn’t articulate with any other bone

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