Chapter 5: Skeletal System The Appendicular Skeleton ShoulderArmLegPelvis.

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  • Slide 1
  • Chapter 5: Skeletal System The Appendicular Skeleton ShoulderArmLegPelvis
  • Slide 2
  • Pectoral Girdle (shoulder) Clavicle: aka: collarbone Articulates with the sternum and the scapula Helps make the shoulder joint and an attachment point for ligaments
  • Slide 3
  • Pectoral Girdle (shoulder) Scapula: aka shoulder blade Acromion: the end of the spine that forms the shoulder joint Glenoid Cavity: a pocket for the head of the humerus The shape of the scapula allows for muscles to attach
  • Slide 4
  • Arm Bones Humerus Head: articulates with the glenoid cavity Capitulum: rounded knob that articulates with the radius Trochlea: articulates with the ulna
  • Slide 5
  • Ulna and Radius Ulna: medial side of the forearm Trochlear Notch: curved area that receives the trochlea of the humerus Radius: lateral side of the forearm Head: articulates with the capitulum of the humerus
  • Slide 6
  • The Wrist, Hand, Fingers Bones in each hand: Carpals: 8 bones Metacarpals: 5 bones Phalanges: 14
  • Slide 7
  • Pelvis Coxal Bones: The hipbones that are made of three fused bones Ilium: superior; Ischium: inferior and posterior Pubis: inferior and anterior Acetabulum: that pocket found where the bone fuse
  • Slide 8
  • Dude or Dudette? Female inlet (superior opening) is larger and more circular Female bones are lighter and more thin Female Ilia flare more laterally Female ischial spines are shorter; outlet (inferior opening) is larger Female pubic arch is more round as the bones are at a great angle
  • Slide 9
  • Nice Legs! Femur: longest, heaviest, strongest bone in the body Head: articulates with the acetabulum Greater and lesser trochanters: muscle attachment points Medial and Lateral Condyles: articulate with the tibia
  • Slide 10
  • Tibia and Fibula Tibia: shin bone Bears the weight of the leg Articulates with the femur,, fibula, and tarsal bones Fibula: parallel and lateral to the tibia
  • Slide 11
  • Knee Patella: kneecap Maintains positions of the quadriceps tendon and increase its leverage on the tibia. Allow the knee to lock for bipedal locomotion.
  • Slide 12
  • Foot Tarsals: ankle bones 7 bones Talus: Articulates with the tibia and fibula; has no muscle attachments Calcaneus: heel bone Metatarsals: 5 bones Phalanges: 14 per foot

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