Kin 3304 - Exam 2 Questions With Complete
Solutions
shoulder girdle - Answer-•shoulder girdle serves as a base from which the upper
extremity functions
•only attachment of thenupper extremity to the axial skeleton is vi the scapula
•scapula attaches through clavicle at the sternoclavuculae joint
Shoulder Girdle Bones - Answer-Primary bones: moves a unit
-Scapula
-Clavicle
*only bony link to the axial skeleton is provided by the clavicle's articulation with
the sternum
Key landmarks of scapula - Answer-Coracoid process
Acromion process
Glendon's fossa
Lateral border
Inferior angle
Medial border
,Superior angle
Spine
pectoralis major action: upper - Answer-Internal rotation
Horizontal adduction
Flexion
Abduction (assist above 90 degrees)
Adduction (assist below 90 degrees)
pectoralis major action: lower - Answer-Internal rotation
Horizontal adduction
Adduction and extension from flexed to anatomical position
pectoralis major application - Answer--synergist with deltoid
Push-ups
Pull-ups
Throwing
Bench press
(May be over developed)
,Coracobrachialis origin - Answer-Coracoid process
Coracobrachialis insertion - Answer-Medial border of humerus shaft
Coracobrachialis action - Answer-Flexion
Vertical Adduction
Horizontal adduction
Coracobrachialis application - Answer-Assisting muscle, most functional in
bringing arm across chest
-may be strengthened by bench press and lat pulls
Deltoid origin - Answer-Clavicle
Acromion process
Scapular spine
deltoid insertion - Answer-Deltoid tuberosity on later humerus
Deltoid action: anterior - Answer-Abduction
Flexion
Horizontal adduction
Internal rotation
Deltoid action: middle - Answer-Vertical and horizontal abduction
, Deltoid action: posterior - Answer-Horizontal and vertical abduction
Extension
External rotation
Deltoid application - Answer-(Any movement of humerus on the scapula will
involve part or all of the deltoid)
Lifting movement:
Trapezius stabilizes scapula as deltoid pulls on humerus
Strengthens with sidearm dumbbell raise, abducting horizontally can empire
posterior and anterior fibers
latissimus dorsi origin - Answer-Posterior crest of ilium
Sacrum
Spinous process of lower vertebrae
Lower 3 ribs
latissimus dorsi insertions - Answer-Intertubercular groove of humerus
Latissimus dorsi action - Answer-Adduction
Extension
Internal rotation
Horizontal abduction
Solutions
shoulder girdle - Answer-•shoulder girdle serves as a base from which the upper
extremity functions
•only attachment of thenupper extremity to the axial skeleton is vi the scapula
•scapula attaches through clavicle at the sternoclavuculae joint
Shoulder Girdle Bones - Answer-Primary bones: moves a unit
-Scapula
-Clavicle
*only bony link to the axial skeleton is provided by the clavicle's articulation with
the sternum
Key landmarks of scapula - Answer-Coracoid process
Acromion process
Glendon's fossa
Lateral border
Inferior angle
Medial border
,Superior angle
Spine
pectoralis major action: upper - Answer-Internal rotation
Horizontal adduction
Flexion
Abduction (assist above 90 degrees)
Adduction (assist below 90 degrees)
pectoralis major action: lower - Answer-Internal rotation
Horizontal adduction
Adduction and extension from flexed to anatomical position
pectoralis major application - Answer--synergist with deltoid
Push-ups
Pull-ups
Throwing
Bench press
(May be over developed)
,Coracobrachialis origin - Answer-Coracoid process
Coracobrachialis insertion - Answer-Medial border of humerus shaft
Coracobrachialis action - Answer-Flexion
Vertical Adduction
Horizontal adduction
Coracobrachialis application - Answer-Assisting muscle, most functional in
bringing arm across chest
-may be strengthened by bench press and lat pulls
Deltoid origin - Answer-Clavicle
Acromion process
Scapular spine
deltoid insertion - Answer-Deltoid tuberosity on later humerus
Deltoid action: anterior - Answer-Abduction
Flexion
Horizontal adduction
Internal rotation
Deltoid action: middle - Answer-Vertical and horizontal abduction
, Deltoid action: posterior - Answer-Horizontal and vertical abduction
Extension
External rotation
Deltoid application - Answer-(Any movement of humerus on the scapula will
involve part or all of the deltoid)
Lifting movement:
Trapezius stabilizes scapula as deltoid pulls on humerus
Strengthens with sidearm dumbbell raise, abducting horizontally can empire
posterior and anterior fibers
latissimus dorsi origin - Answer-Posterior crest of ilium
Sacrum
Spinous process of lower vertebrae
Lower 3 ribs
latissimus dorsi insertions - Answer-Intertubercular groove of humerus
Latissimus dorsi action - Answer-Adduction
Extension
Internal rotation
Horizontal abduction
