Lecture 7
Skeletal System
Gross Anatomy II
7-1
Appendicular Skeleton
• Girdles
– Pectoral or shoulder
– Pelvic
• Upper Limbs
–
–
–
–
Arm (brachial)
Forearm (antebrachial)
Wrist (carpal)
Hand (manus)
• Lower Limbs
– Thigh (femoral)
– Leg (crural)
– Foot (pes)
Fig. 8.1
7-2
Pectoral Girdle
• Scapula (2)
– Acromion process
• Forms protective cover
• Attachment for clavicle
• Attachment for muscles
– Coracoid process
• Attachment for muscles
– Glenoid cavity
• Articulates with
humerus
Fig. 8.3
• Clavicle (2)
Fig. 8.2
7-3
Arm
• Humerus
– Head
– Tubercles
• Greater and lesser
– Intertubercular groove
– Capitulum
• Articulates with radius
– Trochlea
• Articulates with ulna
– Epicondyles
• Attachment of forearm
muscles
Fig. 8.4
7-4
Forearm
• Radius
– Thumb side
– Radial tuberosity
(biceps brachii muscle)
• Ulna
–
–
–
–
Fig. 8.5
Little finger side
Trochlear notch
Olecranon process
Radial notch
7-5
Wrist and Hand
• Wrist
– 8 carpals
Fig. 8.6
7-6
Pelvis
• Os Coxae: Right and Left
– Ilium
– Ischium
• Sit down bone
– Pubis
• Symphysis pubis
• Acetabulum
• Obturator foramen
• Sacrum
Fig. 8.7
7-7
Os Coxae
Fig. 8.9
7-8
Thigh
• Femur
– Head
– Neck
– Trochanters
• Greater and lesser
– Condyles
• Medial and lateral
– Epicondyles
• Medial and lateral
• Patella or kneecap
Fig. 8.11
Fig. 8.12
7-9
Leg
• Tibia
– Larger and supports
most of weight
– Tibial tuberosity
– Medial malleolus
• Fibula
– Articulates with tibia
not femur
– Lateral malleolus
Fig. 8.13
7-10
• Tarsals (7)
Foot
– Talus (ankle bone)
– Calcaneus (heel)
Fig. 8.14
7-11
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
7-12
Questions?
7-13