Skeletal System

Lab 6, Axial Skeleton

Orange = axial skeletonYellow = appendicular skeleton

Cranial Bones 1 = frontal bone

2 = parietal bone

3 = occipital bone

4 = temporal bone

10 = sphenoid bone

23 = coronal suture

28 = squamosal suture

1

2

3

4

23

2810

2 2

3

Cranial Bones 2 = parietal bones

3 = occipital bone

24 = sagittal suture

25 = lambdoidal suture24

25

3

4 4

5 5

Cranial Bones 3 = occipital bone

4 = temporal bones

5 = sphenoid bone

Inferior view of skull

3

4 4

2 25

6

1

Cranial Bones 1 = frontal bone 2 = parietal bones

3 = occipital bone

4 = temporal bones

5 = sphenoid bone 5a = sella turcica (of sphenoid bone)

6 = ethmoid bone

6a = crista galli (of ethmoid bone)

6b = cribriform plate (of ethmoid bone)

Interior view of skull

5a

ab

Parts of occipital bone

19 = occipital condyles

20 = foramen magnum

2019 19

lateral view of skullParts of temporal bones 4 = temporal bone

5 = mastoid process

6 = zygomatic process

7 = external acoustic meatus

8 = styloid process

5

6

7

8

Parts of temporal bones 4 = temporal bone

5 = mastoid process

6 = zygomatic process

7 = external acoustic meatus

8 = styloid process

9 = mandibular fossa

5 5

6 6

88

9 9

10 10

11 11

Parts of temporal bones10 = carotid canal

11 = jugular foramen

1111

Parts of temporal bones11 = jugular foramen

Parts of sphenoid bone12 = sella turcica

12

14

13

Parts of ethmoid bone14 = crista galli

13 = cribriform plate

Parts of occipital bone20 = foramen magnum

20

11

12

13

14

15

16

Facial bones

10 = sphenoid bone*

11 = zygomatic bone

12 = nasal bone

13 = maxilla

14 = lacrimal bone

15 = ethmoid bone*

16 = mandible 10

*cranial bones

Facial bones

11 = zygomatic bones

12 = nasal bones

13 = maxilla

16 = mandible

17 = inferior nasal conchae

13

16

12

11 11

1317 17

Facial bones

13 = maxilla

13a = palatine process of maxilla

17 = palatine bones

18 = vomer

13a 13a

17 17

18

13 13

41

6a

6b

36

32

5 = sphenoid bone5a = superior orbital fissure

5 5a

Parts of Facial bones

17 = inferior nasal concha

32 = mental foramen

36 = alveolar process

41 = infraorbital foramen

42 = supraorbital notch

6a = perpendicular plate of ethmoid bone6b = middle nasal concha of ethmoid bone

17

42

40

32

11a

Parts of Facial bones

11 = zygomatic bone

11a = temporal process of zygomatic bone

32 = mental foramen

40 = lacrimal foramen

11

11

11a

32

3334

35

36

Parts of Facial bones

11 = zygomatic bone11a = temporal process

32 = mental foramen

33 = mandibular condyle

34 = coronoid process

35 = ramus

36 = angle

33 34

35

36

Parts of mandible

32 = mental foramen

33 = mandibular condyle

34 = coronoid process

35 = ramus

36 = angle

32

Fetal skull

1 = anterior fontanel

3 = sphenoid fontanel

Fetal skull

1 = anterior fontanel

2 = posterior fontanel

3 = sphenoid fontanel

4 = mastoid fontanel

2

hyoid bone

Cervical Vertebrae = 7

Thoracic Vertebrae = 12

Lumbar Vertebrae = 5

sacrum & coccyx

Atlas, C1 Axis, C2

dens

1 = Body2 = Transverse Processes3 = Pedicles4 = Lamina5 = Superior Articulating Processes5 = Spine6 = Vertebral Foramen7 = Transverse Foramen Cervical vertebra

1 = Body 3 = Pedicle4 = Lamella 5 = Transverse Processes6 = Spine 7 = Superior Articulating Processes8 = Vertebral Foramen 9 = inferior notch10 = inferior articulating process

910

thoracic vertebra

1 = Body 2 = Pedicle3 = Lamella 4 = superior articulating processes5 = Transverse Processes 6 = Spine7 = Vertebral Foramen 8 = inferior articulating process

8

lumbar vertebra

Sacrum and coccyx

Posterior viewAnterior view

1 = Manubrium

2 = Body

3 = Xiphoid Process

4 = Costal Cartilage

5 = Sternal Angle

7 = Jugular notch

8 = Clavicular notch

Ribs 1-7 = TrueRibs 8-12 = FalseRibs 11-12 = False Floating

Sternum

1 = Head

2 = Neck

3 = Tubercle

5 = Body

1. Lamella rings

2. Osteon

3. Central Canal

4. Lacuna with osteocyte

5. Periosteum

6. Perforating Canal

7. Endosteum

Not labelled: canaliculi

Compact Bone Model