WARM UP 120 1 How many bones do

WARM 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 : 1/30 Intro to BONES: skull

206 total bones in the adult body Children – around 450 * due to some bones not yet fused EX: - wrist - ankle - pelvis - skull

CHILD’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: 1. AXIAL – head neck and torso (80) 2. APPENDICULAR – arms and legs (126)

AXIAL SKULL – 28 bones total Cranium (8) Face (14) Ear (6)

SKULL 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 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 VIEW 1. 2. 3. 4. 5. 6. 7. 8. Suture Parietal Occipital Auditory meatus Mastoid process Styloid process temporal 9. 10. 11. 12. 13. 14. 15. 16. Sphenoid Zygomatic Mandible Suture Frontal Lacrimal SKIP nasal

Ethmoid 18. Maxilla 19. Mental foramen 20. Zygomatic process 17. EAR bones Malleus (hammer) Incus (anvil) Stapes (stirrup)

ANTERIOR (front) 1. Cranium or skull (28) 2. Cervical vertebrae (7) 3. Clavicle 4. Scapula 5. Sternum (3) 6. Humerus 7. Rib (24) 8. Ulna 9. Radius 10. Ilium 11. Ischium 12. Carpals (16 total) 13. Metacarpals (10 total) 14. Phalanges (28 total) 15. Pubic 16. Femur 17. Patella 18. Tibia 19. Fibula 20. Tarsal 21. Metatarsal (10 total) 22. Phalanges (28 total) 23. Sacrum 24. coccyx

POSTERIOR (back) 1. Scapula 2. Humerus 3. Ulna 4. Radius 5. SKIP 6. Pubic 7. Femur 8. Fibula 9. Tibia 10. Calcaneous 11. cranium 12. Cervical vertebrae 13. Clavical 14. Thoracic vertebrae (12) 15. olecranal 16. Lumbar vertebrae (5) 17. Ilium 18. Sacrum 19. Coccyx 20. Carpals 21. Metacarpals 22. phalanges

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Neck bones Shoulder blade Collar bone Tailbone Breastbone Upper leg Shin Knee Wrists Hand bones Bone separating the nose Fingers and toes Ankles Feet bones Hip bone Upper arm bone Bone to pinky Bone to thumb Elbow Middle back bones Lower back bones Heel 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 BONES 1. 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