WARM UP 1/20WARM UP 1/20

1. How many bones do we have in our body?

2. How many in our head?

3. Name as many bones as you know.

Ch. 7 : 1/30Ch. 7 : 1/30

Intro to BONES: skull

206 total bones in the adult 206 total bones in the adult bodybody

Children – around 450

* due to some bones not yet fused

EX: - wrist

- ankle

- pelvis

- skull

CHILD’s SKULLCHILD’s SKULL

Fontanels – areas where the major skull bones have not fused together yet

AKA “soft spots”

Purpose: so skull can be flexible for birth

(solid after about 18 months)

2 Major Skeletal regions:2 Major Skeletal regions:

1. AXIAL – head neck and torso (80)

2. APPENDICULAR – arms and legs (126)

AXIALAXIAL

SKULL – 28 bones total

Cranium (8)

Face (14)

Ear (6)

SKULL FEATURESSKULL FEATURES

SUTURES – immovable joints between skull bones

SINUS – cavity or space

MEATUS – tube-shaped opening

FORAMEN – hole (for blood vessels)

* foramen magnum – hole at bottom of skull, where spinal cord attaches to brain.

PROCESS – projection (sticking out)

SKULL BONE LABELINGSKULL BONE LABELING

FRONT VIEW

1. Suture

2. Parietal

3. Sphenoid

4. Nasal

5. Ethmoid

6. zygomatic

7. Mastoid process

8. Frontal

9. Maxilla

10.Mandible

11.Supraorbital foramen

12.Orbital foramen

13. Lacrimal

14. Infraorbital foramen

15. SKIP

16. Vomer (nasal septum)

17. Mental foramen

SIDE VIEWSIDE VIEW

1. Suture

2. Suture

3. Parietal

4. Occipital

5. Auditory meatus

6. Mastoid process

7. Styloid process

8. temporal

9. Sphenoid

10. Zygomatic

11. Mandible

12. Suture

13. Frontal

14. Lacrimal

15. SKIP

16. nasal

17. Ethmoid

18. Maxilla

19. Mental foramen

20. Zygomatic process

EAR bones

Malleus (hammer)

Incus (anvil)

Stapes (stirrup)

ANTERIOR (front)ANTERIOR (front)

1. Cranium or skull (28)2. Cervical vertebrae (7)3. Clavicle4. Scapula5. Sternum (3)6. Humerus7. Rib (24)8. Ulna9. Radius10. Ilium11. Ischium12. Carpals (16 total)

13. Metacarpals (10 total)14. Phalanges (28 total)15. Pubic16. Femur17. Patella18. Tibia19. Fibula20. Tarsal21. Metatarsal (10 total)22. Phalanges (28 total)23. Sacrum24. coccyx

POSTERIOR (back)POSTERIOR (back)

1. Scapula2. Humerus3. Ulna4. Radius5. SKIP6. Pubic7. Femur8. Fibula9. Tibia10. Calcaneous11. cranium

12. Cervical vertebrae13. Clavical14. Thoracic vertebrae (12)15. olecranal16. Lumbar vertebrae (5)17. Ilium18. Sacrum19. Coccyx20. Carpals21. Metacarpals22. phalanges

1. Neck bones2. Shoulder blade3. Collar bone4. Tailbone5. Breastbone6. Upper leg7. Shin 8. Knee9. Wrists10. Hand bones11. Bone separating the nose

Fingers and toesAnklesFeet bonesHip boneUpper arm boneBone to pinkyBone to thumbElbowMiddle back bonesLower back bonesHeel bone 2 bones on side of head

Lower jaw bone

Forehead bone

Cheek bone

Upper jaw bone

Back of head bone

Top of head bone

Butt bone

Nose bone

Bone behind eye

SKULL BONES1. Frontal

2. Sphenoid

3. Nasal

4. Zygomatic arch

5. Maxilla

6. Mandible

7. Mental foramen

8. Nasal septum

9. Infraorbital foramen

10. Orbital

11. Parietal

12. Suture

13. Occipital

14. Mastoid process

15. Styloid process

16. Zygomatic process

17.Temporal

18.Sphenoid

19.Mandible

20.Mental foramen

21.Maxilla