Appendicular Skeleton

Unit 4 Miss Wheeler

Appendicular Skeleton

� Made of 126 bones �  Pectoral (shoulder)

girdle �  Limbs (appendages) �  Pelvic girdle

Pectoral (Shoulder) Girdle � Made of 2 bones

1.  Clavicle- collarbone 2.  Scapular- shoulder blade

� These allow the upper limbs to have free movement

Pectoral (Shoulder) Girdle

Scapula Clavicle

Bones of the Arm � Humerus

�  Upper arm

� Ulna �  Forearm �  Medial bone in

anatomical position

� Radius �  Forearm �  Lateral bone in

anatomical position

Bones of the Hand � Carpals

�  Wrist bones

� Metacarpals �  Palm bones

� Phalanges �  Finger bones

Bones of the Leg � Femur

�  Thigh bone �  Heaviest, strongest

bone in the body

� Patella �  Kneecap

� Tibia �  Shinbone �  Larger and medial

� Fibula �  Thin and sticklike

Bones of the Foot

� Tarsals �  Two largest are:

� Calcaneus (heel) � Talus (ankle)

� Metatarsals �  Sole of the foot

� Phalanges �  Toes

Pelvic Girdle

� Supports upper body � Protects reproductive organs, bladder,

large intestine � Made of three pairs of fused bones

1.  Ilium 2.  Ischium 3.  Pubis

Pelvic Girdle

Gender Differences of the Pelvis �  Female skeletons have a wider-set pelvic girdle that is

more shallow �  Male skeletons have a pubic arch that is less than 90

degrees �  Females has a pubic arch greater than 90 degrees

Male Female