1. Appendicular Skeleton (pg 8)

2. Appendicular Skeleton (pg 8)
• 126 bones

3. Appendicular Skeleton (pg 8)
• 126 bones
• Arms and legs plus the girdles that attach
them to the axial skeleton

4. Pectoral Girdle
Attaches arm to body

5. Pectoral Girdle
Attaches arm to body
1. Clavicle: Collarbone. S-shaped. Articulates
with the manubrium of sternum and scapula

6. Pectoral Girdle
Attaches arm to body
1. Clavicle: Collarbone. S-shaped. Articulates
with the manubrium of sternum and scapula
2. Scapula: Shoulder blade. Thin, flat triangular
bone. Articulates with clavicle and humerus.
Has a bony ridge for muscle attachment

7. Upper Extremity
1. Humerus: Between shoulder and elbow.
Articulates with the scapula, ulna and radius

8. Upper Extremity
1. Humerus: Between shoulder and elbow.
Articulates with the scapula, ulna and radius
2. Ulna: On the pinky side of the forearm.
Longer than the radius. Forms the point of
the elbow

9. Upper Extremity
1. Humerus: Between shoulder and elbow.
Articulates with the scapula, ulna and radius
2. Ulna: On the pinky side of the forearm.
Longer than the radius. Forms the point of
the elbow
3. Radius: On the thumb side of the forearm.
Crosses over the ulna when the hand is
turned over

10. Upper Extremity
1. Humerus: Between shoulder and elbow.
Articulates with the scapula, ulna and radius
2. Ulna: On the pinky side of the forearm.
Longer than the radius. Forms the point of
the elbow
3. Radius: On the thumb side of the forearm.
Crosses over the ulna when the hand is
turned over
4. Carpals: 8 bones arranged in 2 rows. Form
the wrist

11. Upper Extremity
1. Humerus: Between shoulder and elbow.
Articulates with the scapula, ulna and radius
2. Ulna: On the pinky side of the forearm.
Longer than the radius. Forms the point of
the elbow
3. Radius: On the thumb side of the forearm.
Crosses over the ulna when the hand is
turned over
4. Carpals: 8 bones arranged in 2 rows. Form
the wrist
5. Metacarpals: 5 bones, one in line with each
finger. Form the hand

12. Upper Extremity
1. Humerus: Between shoulder and elbow.
Articulates with the scapula, ulna and radius
2. Ulna: On the pinky side of the forearm. Longer
than the radius. Forms the point of the elbow
3. Radius: On the thumb side of the forearm.
Crosses over the ulna when the hand is turned
over
4. Carpals: 8 bones arranged in 2 rows. Form the
wrist
5. Metacarpals: 5 bones, one in line with each
finger. Form the hand
6. Phalanges: 14 bones (3 in each finger, 2 in
thumb)

13. Pelvic girdle
• Attaches leg to body

14. Pelvic girdle
• Attaches leg to body
• Consists of 2 coxal (hip) bones

15. Pelvic girdle
• Attaches leg to body
• Consists of 2 coxal (hip) bones
• Articulate posteriorly with the sacrum and
anteriorly with each other at the symphysis
pubis

16. Pelvic girdle
• Attaches leg to body
• Consists of 2 coxal (hip) bones
• Articulate posteriorly with the sacrum and
anteriorly with each other at the symphysis
pubis
• Each coxal bone has 3 parts
1. Ilium: largest part. Wing-shaped

17. Pelvic girdle
• Attaches leg to body
• Consists of 2 coxal (hip) bones
• Articulate posteriorly with the sacrum and
anteriorly with each other at the symphysis pubis
• Each coxal bone has 3 parts
1. Ilium: largest part. Wing-shaped
2. Ischium: Posterior portion. Sitting bones

18. Pelvic girdle
• Attaches leg to body
• Consists of 2 coxal (hip) bones
• Articulate posteriorly with the sacrum and
anteriorly with each other at the symphysis pubis
• Each coxal bone has 3 parts
1. Ilium: largest part. Wing-shaped
2. Ischium: Posterior portion. Sitting bones
3. Pubis: lower, anterior portion

19. Lower Extremity
1. Femur: largest, longest, strongest bone in the
body

20. Lower Extremity
1. Femur: largest, longest, strongest bone in the
body
2. Tibia: On the medial side of the leg. Larger
than the fibula. Articulates with femur to
form knee joint

21. Lower Extremity
1. Femur: largest, longest, strongest bone in the
body
2. Tibia: On the medial side of the leg. Larger
than the fibula. Articulates with femur to
form knee joint
3. Fibula: Slender bone on lateral side

22. Lower Extremity
1. Femur: largest, longest, strongest bone in the
body
2. Tibia: On the medial side of the leg. Larger
than the fibula. Articulates with femur to
form knee joint
3. Fibula: Slender bone on lateral side
4. Patella: Kneecap. Flat triangular bone
enclosed within the tendon that attaches the
thigh muscles to the tibia. Protects the knee
joint

23. Lower Extremity
1. Femur: largest, longest, strongest bone in the
body
2. Tibia: On the medial side of the leg. Larger
than the fibula. Articulates with femur to
form knee joint
3. Fibula: Slender bone on lateral side
4. Patella: Kneecap. Flat triangular bone
enclosed within the tendon that attaches the
thigh muscles to the tibia. Protects the knee
joint
5. Tarsals: 7 bones that form the ankle. Largest
is the calcaneus (heel) bone

24. Lower Extremity
1. Femur: largest, longest, strongest bone in the
body
2. Tibia: On the medial side of the leg. Larger than
the fibula. Articulates with femur to form knee
joint
3. Fibula: Slender bone on lateral side
4. Patella: Kneecap. Flat triangular bone enclosed
within the tendon that attaches the thigh
muscles to the tibia. Protects the knee joint
5. Tarsals: 7 bones that form the ankle. Largest is
the calcaneus (heel) bone
6. Metatarsals: 5 bones that form the instep and
ball of the foot

25. Lower Extremity
1. Femur: largest, longest, strongest bone in the body
2. Tibia: On the medial side of the leg. Larger than the
fibula. Articulates with femur to form knee joint
3. Fibula: Slender bone on lateral side
4. Patella: Kneecap. Flat triangular bone enclosed within
the tendon that attaches the thigh muscles to the
tibia. Protects the knee joint
5. Tarsals: 7 bones that form the ankle. Largest is the
calcaneus (heel) bone
6. Metatarsals: 5 bones that form the instep and ball of
the foot
7. Phalanges: 14 bones. 3 in each toe, except big toe
(hallux) which has 2