1. Chapter 5: Skeletal System The Appendicular Skeleton
Shoulder
Arm
Leg
Pelvis

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

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

4. Arm Bones Humerus Head: articulates with the glenoid cavity
Capitulum: rounded knob that articulates with the radius
Trochlea: articulates with the ulna

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

6. The Wrist, Hand, Fingers Bones in each hand: Carpals: 8 bones
Metacarpals: 5 bones
Phalanges: 14

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

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

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

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

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.

12. Foot Tarsals: ankle bones Metatarsals: 5 bones Phalanges: 14 per foot
Talus: Articulates with the tibia and fibula; has no muscle attachments
Calcaneus: heel bone
Metatarsals: 5 bones
Phalanges: 14 per foot