test1 Flashcards
Sagittal plane
divides the body into left/right. Flexion/extension ( anterior/posterior) occur in this plane
frontal (coronal) plane
divides the body into anterior/posterior portions Abduction/adduction occur in this plane
transverse (horizontal) plane
divides the body into superior and lower inferior portions Rotation occurs in this plane
Bilateral
refers to both sides
Contralateral
opposite side
Ipsilateral
same side
Axial Skeleton
head, thorax, trunk Cranium Vertebral Column Thorax
Appendicular Skeleton
Upper extremities Lower extremities
Muscles of the Shoulder Girdle (5)
All of the muscles cause movement of the scapula All have origin on the axial skeleton and insertions on the scapula and/or clavicle
1.Pectoralis minor 2.Serratus anterior 3.Trapezius 4.Rhomboids 5.Levator scalpulae
Pectoralis Minor
Actions: protraction, downward rotation and depression.
-O axial skeleton / I- coracoid process of scapula
Serratus Anterior
Action: abduction ( protraction) and upward rotation
O – axial skeleton /I – scapula
Trapezius
Action:: elevate, depress, and upward rotation
O – axial skeleton ; I clavicle/scapula
Rhomboids
Action: Adduction ( Retraction), downward rotation, and elevation.
O – axial skeleton I – medical border of scapula
Levator Scalpulae
Action: elevation; downward rotation
O – axial skeleton I – scapula
Force Couples
Muscles are pulling in different directions to accomplish the same movement
Muscles of the Glenohumeral/Shoulder Joint
All muscles move the humerus
Deltoid
Coracobrachialis
Teres Major
Rotator Cuff group ( supraspinatous, infraspinatous, subscapularis, teres minor)
Latissimus Dorsi
Pectoralis Major
Pectoralis Major
O: clavicle/anterior surface of ribs 1-6
I : bicipital grove of the humerus
A: horizontal adduction, flexion, internal rotation and adduction
Coracobrachialis
O: coracoid process of scapula
I: Medial border of humerus shaft
A: Shoulder flexion /Horizontall adduction
N: musculocutaneous nerve
Anterior Deltoid
O: lateral 3rd of clavicle
I: Deltoid Tuberosity
A: Shoulder flexion, horizontal shoulder adduction
N: Axillary Nerve
Middle Deltoid
O: Acronion Process
I: Deltoid tuberosity
A: shoulder abduction
Posterior Deltoid
O : lateral half of sacpula spine
I: deltoid tuberosity
A: Shoulder extension, external rotation, horizontal abduction, abduction
Deltoid
Anterior, Middle, Posterior
A:Shoulder extension, external rotation, abduction, flexion, horizontal shoulder adduction and abduction
Rotator Cuff Muscles (SITS)
SITS- subscapularis, infraspinatous, teres minor, and supraspinatous
responsible for keeping the humeral head in its proper position within the glenoid cavity
Subscapularis (Rotator Cuff Muscle)
O: subscapula fossa of scapula
I : Lesser tubercle of the humerus
A : internal rotation