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The Skeletal System PowerPoint PPT Presentation


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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

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The skeletal system l.jpg

The Skeletal System

Overview

And

The Skull


The skeletal system2 l.jpg

The Skeletal System

  • Includes the following:

  • Bones (206)

  • Cartilages

  • Ligaments


Functions l.jpg

Functions

  • Support and protection

  • Storage of calcium

  • Blood cell production

  • Movement


Two divisions l.jpg

Two Divisions

  • Axial

  • Bones associated with skull, thorax and vertebral column

  • 80 bones


Slide5 l.jpg

2. Appendicular

  • Bones associated with extremities and shoulder and hip joints

  • 126 bones

  • 80 + 126 = 206


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Bone Terminology (p. 128)


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Axial Skeleton


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Breakdown


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Breakdown (Axial)

  • Skull – 22

  • Auditory ossicles – 6

  • Hyoid – 1

  • Thoracic cage – 25

  • Vertebral column – 26

  • Total = 80


The skull l.jpg

The Skull

  • 22 bones

  • Cranial – 8

  • Those in direct contact with the brain

  • Facial – 14

  • Those not in contact w/ the brain


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The Skull

cranial

facial


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Sutures

Immovable

joints

between

skull bones


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Sutures


A cranial bones 1 frontal anterior l.jpg

A. Cranial bones1. Frontal (anterior)


1 frontal lateral l.jpg

1. Frontal (lateral)


1 frontal superior l.jpg

1. Frontal (superior)


2 parietal l.jpg

2. Parietal


3 temporal l.jpg

3. Temporal


Temporal disarticulated l.jpg

Temporal (disarticulated)


External auditory canal l.jpg

External auditory canal


Mastoid process l.jpg

Mastoid process


Styloid process l.jpg

Styloid process


Zygomatic process l.jpg

Zygomatic process


Squamous portion l.jpg

Squamous portion


Mandibular fossa l.jpg

Mandibular fossa


Petrous portion l.jpg

Petrous portion


4 occipital posterior l.jpg

4. Occipital (posterior)


4 occipital inferior l.jpg

4. Occipital (inferior)


4 occipital superior l.jpg

4. Occipital (superior)


5 sphenoid l.jpg

5. Sphenoid

  • Center bone of the skull

  • Most skull bones articulate with it.

  • List the bones that do and those that don’t!


5 sphenoid superior l.jpg

5. Sphenoid (superior)


5 sphenoid lateral l.jpg

5. Sphenoid (lateral)


5 sphenoid inferior l.jpg

5. Sphenoid (inferior)


5 sphenoid superior35 l.jpg

5. Sphenoid (superior)


Sphenoid disarticulated and superior l.jpg

Sphenoid (disarticulated and superior)


Sphenoid disarticulated and posterior l.jpg

Sphenoid(disarticulated and posterior)

2 large wings

2 small wings

2 feet


Greater wing posterior l.jpg

Greater wing (posterior)


Greater wing superior l.jpg

Greater wing (superior)


Greater wing lateral l.jpg

Greater wing (lateral)


Lesser wing posterior l.jpg

Lesser wing (posterior)


Lesser wing superior l.jpg

Lesser wing (superior)


Sella turcica superior l.jpg

Sella turcica (superior)


Sella turcica sagittal l.jpg

Sella turcica (sagittal)


Pituitary gland l.jpg

Pituitary gland


Pterygoid processes posterior l.jpg

Pterygoid processes (posterior)


Pterygoid processes inferior l.jpg

Pterygoid processes (inferior)


6 ethmoid superior l.jpg

6. Ethmoid (superior)


Olfactory nerve l.jpg

Olfactory Nerve


6 ethmoid cribriform plate l.jpg

6. Ethmoidcribriform plate


6 ethmoid sagittal l.jpg

6. Ethmoid (sagittal)


6 ethmoid sagittal52 l.jpg

6. Ethmoid (sagittal)


Ethmoid frontal l.jpg

Ethmoid (frontal)


Flower l.jpg

Flower


Facial bones 1 zygomatic anterior l.jpg

Facial bones1. Zygomatic (anterior)


1 zygomatic lateral l.jpg

1. Zygomatic (lateral)


2 maxilla anterior l.jpg

2. Maxilla (anterior)


2 maxilla lateral l.jpg

2. Maxilla (lateral)


2 maxilla inferior l.jpg

2. Maxilla (inferior)


3 palatine inferior l.jpg

3. Palatine (inferior)


4 nasal anterior l.jpg

4. Nasal (anterior)


4 nasal anterior62 l.jpg

4. Nasal (anterior)


The orbit l.jpg

The Orbit


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The Orbit


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The Orbit

What bone(s) form:

  • The superficial rim (SIML)

  • The floor

  • The roof

  • The interior walls (PML)


Lacrimal anterior l.jpg

Lacrimal (anterior)


6 inferior conchae l.jpg

6. Inferior conchae


7 vomer sagittal l.jpg

7. Vomer (sagittal)


7 vomer inferior l.jpg

7. Vomer (inferior)


8 mandible l.jpg

8. Mandible


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8. Mandible

  • Only bone of skull to have moveable joint

  • Temporomandibular joint (TMJ)

  • Articulates in the mandibular fossa of the temporal bone


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TMJ


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8. Mandible

Mandibular foramen


8 mandible74 l.jpg

8. Mandible


Hyoid l.jpg

Hyoid

Associated with movements of tongue

Doesn’t articulate with any other bone


Fontanels lateral l.jpg

Fontanels (lateral)


Fontanels superior l.jpg

Fontanels (superior)


Fontanels anterio superior l.jpg

Fontanels (anterio-superior)


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