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The Skeleton From the Greek, meaning “dried up” 20% of body mass Bones, Joints, Cartilage, Joints, & Ligaments.

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Presentation on theme: "The Skeleton From the Greek, meaning “dried up” 20% of body mass Bones, Joints, Cartilage, Joints, & Ligaments."— Presentation transcript:

1 The Skeleton From the Greek, meaning “dried up” 20% of body mass Bones, Joints, Cartilage, Joints, & Ligaments


3 Axial skeleton Skull –Cranial bones –Facial bones Vertebral Column Thorax

4 Cranial bones Frontal Parietal (2) Occipital Temporal (2) Sphenoid Ethmoid

5 Frontal Frontal sinus supra-orbital ridge (margin) supra-orbital foramen (or notch) frontal suture (usually only present in fetal skull) coronal suture (between frontal and anterior border of parietals)

6 Parietal bones sagittal suture lambdoid suture squamous suture

7 Occipital occipital condyles foramen magnum nuchal lines

8 Temporal squamous portion external acoustic (auditory) meatus mastoid process styloid process petrous portion zygomatic process

9 Sphenoid greater and lesser wings pterygoid processes sella turcica sinuses

10 Ethmoid perpendicular plate crista galli cribriform (horizontal) plate superior and middle concha sinuses

11 Facial bones Paired bones Maxillae Zygomatic Nasals Lacrimals Palatines Inferior conchae Unpaired bones Mandible Vomer

12 nasal bones lacrimal bones

13 Zygomatic bones orbital process temporal process maxillary process

14 Maxilla & Palatine Bones sinus alveolar ridge (margin) infra-orbital foramen palatine processes

15 Mandible ramus condyle angle body Coronoid process Alveolar ridge

16 Facial Bones (continued) Vomer Inferior nasal conchae Sinuses

17 Hyoid bone

18 Ribs True Ribs – First 7 pairs (connect to sternum directly) False Ribs – last 5 pairs –Floating ribs – the last two false ribs are called floating ribs because they don’t attach in the front at all

19 Sternum Manubrium suprasternal (jugular) notch sternal angle body xiphoid process clavicular notch

20 Vertebrae: Lamina Pedicles Centrum spinous process superior and inferior articulating processes vertebral foramen intervertebral foramen


22 Vertebrae: Continued Cervical Vertebrae (7) –bifid spinous process –transverse foramina –C1 = atlas –C2 = axis with odontoid process Thoracic (12) –downward sharp spinous process –articulating facets on centrum and transverse processes for ribs

23 lumbar (5) –massive centrum –short, wide spinous process Sacral: (5) fused –sacral canal –auricular surface –sacral foramen –median sacral crest –sacral hiatus –sacral promontory –apex Coccyx: (1-4) fused

24 Appendicular Skeleton Pectoral Girdle Clavicle - sternal end, acromial end Scapula –Spine –supraspinatus fossa, –infraspinatus fossa –acromion process –coracoid process –vertebral border –axillary border –glenoid cavity

25 Bones of the Upper Extremity Humerus Radius Ulna

26 Humerus Head Neck: surgical/anatomical Greater/ Lesser tubercle Intertubercular groove Deltoid tuberosity Epicondyles - medial/lateral Trochlea Capitulum Coronoid fossa Olecranon fossa

27 Radius Head Neck Shaft Radial tuberosity Styloid process Ulnar notch

28 Ulna Olecranon process Trochlear notch Radial notch Coronoid process Styloid process Head

29 Bones of the Wrist and Hand Carpals - 8 wrist bones Metacarpals - 5 hand bones Phalanges - 14 finger bones

30 Bones of the Pelvic Girdle (OS COXAE) Consists of three bones: Ilium Ishium Pubis

31 ILIUM Iliac crest Anterior superior iliac spine Greater sciatic notch Sacroiliac joint

32 ISCHIUM Ischial tuberosity Lesser sciatic notch Acetabulum Obturator foramen

33 PUBIS Pubic symphysis

34 Male Pelvis / Female Pelvis Larger, heavier Heart -shaped Deep pelvis Tilted forward < 90 degree angle Smaller, lighter More oval Shallow pelvis Flared more >90 degree angle


36 Bones of the Thigh and Leg Femur Tibia Fibula

37 FEMUR Head Neck Greater trochanter Lesser trochanter Shaft Linea aspera Epicondyles Condyles Intercondylar notch or fossa Patellar surface

38 TIBIA Tibial condyles Tibial tuberosity Medial malleolus Shaft

39 FIBULA Head Shaft Lateral malleolus

40 Patella - Kneecap

41 Bones of the Ankle and Foot Tarsals - 7 ankle bones –Talus –Calcaneus Metatarsals - 5 foot bones Phalanges - 14 toe bones –proximal –middle (medial) –distal

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