7-1 Appendicular Skeleton Girdles –Pectoral or shoulder –Pelvic Upper Limbs –Arm (brachial) –Forearm –(Radius and Ulna) –Wrist (carpal) –Hand (manual)

7-1

Appendicular Skeleton• Girdles

– Pectoral or shoulder– Pelvic

• Upper Limbs– Arm (brachial)– Forearm – (Radius and Ulna)– Wrist (carpal)– Hand (manual)

• Lower Limbs– Thigh (femoral)– Leg – (tibia and fibula)– Foot (pedal)

Fig. 7.1

7-2

Pectoral Girdle• Scapula (2)

– Acromion process• Forms protective cover• Attachment for clavicle• Attachment for muscles

– Coracoid process• Attachment for muscles

– Glenoid cavity/fossa• Articulates with

humerus

• Clavicle (2)

Fig. 7.24

7-3

Arm• Humerus

– Head– Tubercles

• Greater and lesser

– Intertubercular groove– Capitulum

• Articulates with the cupshaped depression on the head of the radius

– Trochlea• Articulates with

olecronon process of the ulna

– Epicondyles• Attachment of forearm

muscles

Fig. 7.25

7-4

Forearm

• Radius– Thumb side

– Head

– Styloid process

• Ulna– Little finger side

– Trochlear notch

– Olecranon process

– Radial notch

– Styloid processFig. 7.26

7-5

Wrist and Hand• Wrist

– 8 carpal bones

– Sally Left The Party To Take Cathy Home

• Scaphoid• Lunate• Triquital• Pisiform• Trapezium• Trapezoid• Capitate• Hamate

Fig. 7.27

7-6

Pelvis• Coxae: Right and Left

– Ilium– Ischium

• Sit down bone– Pubis

• Symphysis pubis

• Acetabulum• Obturator foramen• Sacrum

Fig. 7.30

Fig. 7.31

7-7

Thigh

• Femur– Head

– Neck

– Trochanters• Greater and lesser

– Condyles• Medial and lateral

– Epicondyles• Medial and lateral

• ___________________ or kneecap

Fig. 7.34

7-8

Leg

• Tibia– Larger and supports

most of weight

– Tibial tuberosity

– Medial malleolus

• Fibula– Articulates with tibia

not femur

– Lateral malleolus

Fig. 7.36

7-9

Foot

• Tarsals (7)– Talus (ankle bone)– Navicular– Medial Cuneiform– Intermediate Cuneiform– Lateral Cuneiform– Cuboid– Calcaneus (heel)

Fig. 7.38

7-10

Points to Remember

• Appendicular skeleton includes bones of upper and lower limbs and pectoral and pelvic girdles

• Pectoral girdle and upper limb held in place largely by muscles

• Pelvic girdle has strong articulation with sacrum to help support weight of body

7-11

Questions?