Presentation is loading. Please wait.

Presentation is loading. Please wait.

THE AXIAL SKELETON & FETAL SKULL Exercise 9. Two Skeletal Divisions Axial skeleton Axial skeleton  Bones around the body’s “axis” or center of gravity.

Similar presentations


Presentation on theme: "THE AXIAL SKELETON & FETAL SKULL Exercise 9. Two Skeletal Divisions Axial skeleton Axial skeleton  Bones around the body’s “axis” or center of gravity."— Presentation transcript:

1 THE AXIAL SKELETON & FETAL SKULL Exercise 9

2

3 Two Skeletal Divisions Axial skeleton Axial skeleton  Bones around the body’s “axis” or center of gravity Appendicular skeleton Appendicular skeleton  Bones of the limbs or “appendages”

4 VERY IMPORTANT TABLE

5 THE AXIAL SKELETON Fig. 7-1b

6 Fig. 7-1a

7 SKULL Cranial skeleton Cranial skeleton  Cranium, braincase Facial Skeleton Facial Skeleton  face Fig. 7-2

8 Fig. 7-3

9 TEMPORAL BONE

10 Fig. 7-3 TEMPORAL BONE

11 Fig. 7-3 TEMPORAL BONE

12 Fig. 7-3 TEMPORAL BONE

13 Fig. 7-3 OCCIPITAL BONE HYPOGLOSSAL CANAL IS UNDERNEATH THE CONDYLE

14 Fig. 7-3 SPHENOID BONE

15 Fig. 7-3 SPHENOID BONE

16 Fig. 7-3 SPHENOID BONE

17 Fig. 7-3 ETHMOID BONE OLFACTORY FORAMINA ARE THE HOLES IN THE CRIBIFORM PLATE

18 Fig. 7-3 ETHMOID BONE

19 © 2014 Pearson Education, Inc. Figure 9.1a External anatomy of the right lateral aspect of the skull. Coronal suture Parietal bone Temporal bone Occipital bone Frontal bone Sphenoid bone (greater wing) Ethmoid bone Lacrimal bone Nasal bone Zygomatic bone Maxilla Mandible Squamous suture Lambdoid suture Zygomatic process Occipitomastoid suture External acoustic meatus Mastoid process Styloid process Lacrimal fossa

20 © 2014 Pearson Education, Inc. Figure 9.1b External anatomy of the right lateral aspect of the skull. Coronal suture Parietal bone Temporal bone Occipital bone Squamous suture Lambdoid suture Occipitomastoid suture External acoustic meatus Mastoid process Styloid process Zygomatic process Frontal bone Sphenoid bone (greater wing) Ethmoid bone Lacrimal bone Nasal bone Zygomatic bone Maxilla Mandible Lacrimal fossa

21 © 2014 Pearson Education, Inc. Figure 9.2a Inferior view of the skull, mandible removed. Maxilla (palatine process) Palatine bone (horizontal plate) Zygomatic bone Temporal bone (zygomatic process) Vomer Temporal bone (petrous part) Parietal bone Styloid process Mastoid process Maxilla Sphenoid bone (greater wing) Occipital bone Foramen ovale Foramen spinosum Carotid canal External acoustic meatus Jugular foramen Occipital condyle Foramen magnum

22 © 2014 Pearson Education, Inc. Figure 9.2b Inferior view of the skull, mandible removed. Mastoid process Zygomatic arch Foramen ovale Carotid canal Styloid process Jugular foramen Occipital condyle Foramen magnum

23 © 2014 Pearson Education, Inc. Figure 9.3a-b Internal anatomy of the inferior portion of the skull. Cribriform plate Crista galli Ethmoid bone Sphenoid Temporal bone (petrous part) Parietal bone Occipital bone Frontal bone sella turcica Internal acoustic meatus Jugular foramen Foramen magnum Cribriform foramina Optic canal Foramen ovale Hypoglossal canal

24 © 2014 Pearson Education, Inc. Figure 9.3c Internal anatomy of the inferior portion of the skull. Cribriform plate Crista galli Ethmoid bone Sphenoid Temporal bone (petrous part) Parietal bone Occipital bone sella turcica Foramen magnum Frontal bone Cribriform foramina Optic canal Foramen ovale Jugular foramen

25 Fig. 7-3 SKULL SUTURES

26 Fig. 7-3 SKULL SUTURES

27 Fig. 7-3 SKULL SUTURES

28 Fig. 7-3 SKULL SUTURES

29 Fig. 7-3 SKULL SUTURES

30 © 2014 Pearson Education, Inc. Figure 9.6b Anatomy of the anterior and posterior aspects of the skull. Parietal bone Occipital bone Temporal bone (mastoid process) Sagittal suture Lambdoid suture Occipitomastoid suture Occipital condyle

31 Fig. 7-2 FACIAL BONES OF THE SKULL

32 Fig. 7-2 FACIAL BONES OF THE SKULL LACRIMAL FOSSA = Shallow depression in this bone

33 Fig. 7-3 FACIAL BONES OF THE SKULL Zygomatic bone = blue Temporal bone = pink Zygomatic ARCH is a segment of each of these bones, your “cheekbone” is actually partially temporal bone and partially zygomatic bone…your zygomatic arch.

34 Fig. 7-3 FACIAL BONES OF THE SKULL Inferior nasal conchae (2) are FACIAL bones…. You already learned that the middle nasal conchae are part of the ethmoid bone, a CRANIAL bone.

35 Fig. 7-3, 4 FACIAL BONES OF THE SKULL The VOMER is the inferior portion of your nasal septum.

36 Fig. 7-3 FACIAL BONES OF THE SKULL PALATINE BONE: posterior 1/3 of “roof of mouth”

37 Fig. 7-2 FACIAL BONES OF THE SKULL 2 MAXILLARY BONES: upper jaw

38 Fig. 7-2 FACIAL BONES OF THE SKULL MANDIBLE (1): lower jaw

39 © 2014 Pearson Education, Inc. Figure 9.6c Anatomy of the anterior and posterior aspects of the skull. Parietal bone Sphenoid bone Temporal bone Zygomatic bone Maxilla Frontal bone Ethmoid bone Nasal bones Mandible

40 © 2014 Pearson Education, Inc. Figure 9.7 Detailed anatomy of the mandible and maxilla. Maxilla, right lateral viewMandible, right lateral view

41 © 2014 Pearson Education, Inc. Figure 9.8 Bones that form the orbit. Roof of orbit Lateral wall of orbit Medial wall Floor of orbit Superior orbital fissure Optic canal Inferior orbital fissure Zygomatic bone Nasal bone sphenoid bone frontal bone sphenoid bone zygomatic bone ethmoid bone maxilla Lacrimal bone palatine bone maxillary bone Zygomatic bone

42 Fig Hyoid bone Not really a skull bone Doesn’t articulate with any other bone—unique!

43 Fig Vertebral Column Cervical: C1-C7 Atlas = C1 Axis = C2

44 Fig Cervical Vertebrae Atlas = C1 “no body” Axis = C2 All cervicals have holes in the sides

45 Fig Thoracic Vertebrae T1-T12 All thoracics have facets on the sides where ribs attach Fig. 7-20

46 Fig Lumbar Vertebrae L1-L5 All lumbars have large “bodies”

47 Fig Sacrum & Coccyx 5 fused vertebrae Know posterior/anterior 4 fused vertebrae

48 Intervertebral Discs Inter = in between What type of cartilage? Fig. 7-18

49 © 2014 Pearson Education, Inc. Table 9.1 Regional Characteristics of Cervical, Thoracic, and Lumbar Vertebrae

50 © 2014 Pearson Education, Inc. Figure 9.11 The vertebral column. C 7 (vertebra prominens) C1C1 Cervical curvature (concave) 7 vertebrae, C 1 – C 7 Spinous process Transverse processes Thoracic curvature (convex) 12 vertebrae, T 1 – T 12 Intervertebral discs Intervertebral foramen Lumbar curvature (concave) 5 vertebrae, L 1 – L 5 T1T1 L1L1 Sacral curvature (convex) Sacrum 5 fused vertebrae Coccyx 4 fused vertebrae Anterior viewRight lateral view

51 © 2014 Pearson Education, Inc. Figure 9.12 Abnormal spinal curvatures ScoliosisKyphosisLordosis

52 © 2014 Pearson Education, Inc. Figure 9.13 A typical vertebra, superior view.

53 © 2014 Pearson Education, Inc. Figure 9.14 The first and second cervical vertebrae. Superior view of atlas (C 1 ) Inferior view of atlas (C 1 ) Superior view of axis (C 2 ) Posterior

54 © 2014 Pearson Education, Inc. Figure 9.15 Superior and right lateral views of typical vertebrae. C1C1 C2C2 Superior ViewRight Lateral View Cervical Thoracic Lumbar

55 © 2014 Pearson Education, Inc. Figure 9.16 Sacrum and coccyx. Anterior view Posterior view Coccyx

56 Bony Thorax Fig STERNUM

57 Bony Thorax Fig TRUE RIBS (1-7) FALSE RIBS (8-12) FALSE RIBS : FLOATING RIBS (11-12)

58 Bony Thorax Fig COSTAL CARTILAGE NOT “COASTAL”

59 © 2014 Pearson Education, Inc. Figure 9.17 The thoracic cage. Manubrium Heart Costal cartilage Body L 1 Vertebra Floating ribs (11, 12) False ribs (8–12) True ribs (1–7) Xiphoid process Sternum T2T2 T3T3 T4T4 T5T5 T9T9

60 © 2014 Pearson Education, Inc. Figure 9.18 Structure of a typical true rib and its articulations. Transverse costal facet (for tubercle of rib)

61 The Fetal Skeleton

62

63 Fontanels: indentations between bones of fetal skull (fibrous membranes), which ossify as the child ages (20-22 months)

64

65 Face: cranium Head:body Ossification centers Frontal bone Vertebrae Sternum Patellae Coxal Rib cage Carpals tarsals

66 © 2014 Pearson Education, Inc. Figure 9.19 Skull of a newborn. Posterior fontanelle Ossification center Frontal bone Occipital bone Parietal bone Frontal bone Parietal bone Occipital bone Temporal bone (squamous part) Left lateral view Superior view Left lateral view Anterior view Anterior fontanelle Frontal suture Anterior Sphenoidal fontanelle Ossification center Posterior fontanelle Mastoid fontanelle Anterior fontanelle Frontal suture Sphenoidal fontanelle Maxilla Mandible Anterior fontanelle Sphenoidal fontanelle Mastoid fontanelle Parietal bone Occipital bone Temporal bone (squamous part) Frontal bone Parietal bone

67 © 2014 Pearson Education, Inc. Figure 9.19a Skull of a newborn. Posterior fontanelle Ossification center Frontal bone Occipital bone Parietal bone Superior view Anterior fontanelle Frontal suture Anterior

68 © 2014 Pearson Education, Inc. Figure 9.19b Skull of a newborn. Frontal bone Parietal bone Occipital bone Temporal bone (squamous part) Left lateral view Sphenoidal fontanelle Ossification center Posterior fontanelle Mastoid fontanelle

69 © 2014 Pearson Education, Inc. Figure 9.19c Skull of a newborn. Anterior view Anterior fontanelle Frontal suture Sphenoidal fontanelle Maxilla Mandible Frontal bone Parietal bone

70 © 2014 Pearson Education, Inc. Figure 9.19d Skull of a newborn. Left lateral view Anterior fontanelle Sphenoidal fontanelle Mastoid fontanelle Parietal bone Occipital bone Temporal bone (squamous part) Frontal bone

71 © 2014 Pearson Education, Inc. Review Figure 9.1

72 © 2014 Pearson Education, Inc. Review Figure 9.2

73 © 2014 Pearson Education, Inc. Review Figure 9.3 (curvature)

74 © 2014 Pearson Education, Inc. Review Figure 9.4 L 1 vertebra

75 © 2014 Pearson Education, Inc. Review Figure 9.5


Download ppt "THE AXIAL SKELETON & FETAL SKULL Exercise 9. Two Skeletal Divisions Axial skeleton Axial skeleton  Bones around the body’s “axis” or center of gravity."

Similar presentations


Ads by Google