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Lecture Human anatomy and physiology - Chapter 7: The skeleton (part c)

Bones of the limbs and their girdles are collectively called the appendicular skeleton because they are appended to the axial skeleton that forms the longitudinal axis of the body. Chapter 7 - The skeleton (part c) provides knowledge of appendicular skeleton. | 7 The Skeleton: Part C Appendicular Skeleton Bones of the limbs and their girdles Pectoral girdle attaches the upper limbs to the body trunk Pelvic girdle secures the lower limbs Pectoral Girdle (Shoulder Girdle) Clavicles and the scapulae Attach the upper limbs to the axial skeleton Provide attachment sites for muscles that move the upper limbs PLAY A&P Flix™: Bones of the pectoral girdle Figure 7.24a Clavicle Acromio- clavicular joint Scapula (a) Articulated pectoral girdle Clavicles (Collarbones) Flattened acromial (lateral) end articulates with the scapula Cone-shaped sternal (medial) end articulates with the sternum Act as braces to hold the scapulae and arms out laterally Figure 7.24b Acromial (lateral) end (b) Right clavicle, superior view Posterior Sternal (medial) end Anterior Scapulae (Shoulder Blades) Situated on the dorsal surface of rib cage, between ribs 2 and 7 Flat and triangular, with three borders and three angles Seven large fossae, named according to location Figure 7.25a Acromion Coracoid process Suprascapular notch Superior border Superior angle Subscapular fossa Medial border Inferior angle Glenoid cavity Lateral border (a) Right scapula, anterior aspect Figure 7.25b Superior angle Medial border Coracoid process Suprascapular notch Acromion Glenoid cavity at lateral angle Lateral border Infraspinous fossa Spine (b) Right scapula, posterior aspect Supraspinous fossa Figure 7.25c Coracoid process Glenoid cavity Acromion Infraspinous fossa Spine (c) Right scapula, lateral aspect Infraglenoid tubercle Supraglenoid tubercle Supraspinous fossa Subscapular fossa Inferior angle Supraspinous fossa Infraspinous fossa Subscapular fossa Posterior Anterior The Upper Limb 30 bones form the skeletal framework of each upper limb Arm Humerus Forearm Radius and ulna Hand 8 carpal bones in the wrist 5 metacarpal bones in the palm 14 phalanges in the fingers Humerus Largest, longest bone of upper limb Articulates superiorly with glenoid cavity of scapula . | 7 The Skeleton: Part C Appendicular Skeleton Bones of the limbs and their girdles Pectoral girdle attaches the upper limbs to the body trunk Pelvic girdle secures the lower limbs Pectoral Girdle (Shoulder Girdle) Clavicles and the scapulae Attach the upper limbs to the axial skeleton Provide attachment sites for muscles that move the upper limbs PLAY A&P Flix™: Bones of the pectoral girdle Figure 7.24a Clavicle Acromio- clavicular joint Scapula (a) Articulated pectoral girdle Clavicles (Collarbones) Flattened acromial (lateral) end articulates with the scapula Cone-shaped sternal (medial) end articulates with the sternum Act as braces to hold the scapulae and arms out laterally Figure 7.24b Acromial (lateral) end (b) Right clavicle, superior view Posterior Sternal (medial) end Anterior Scapulae (Shoulder Blades) Situated on the dorsal surface of rib cage, between ribs 2 and 7 Flat and triangular, with three borders and three angles Seven large fossae, named according to location .