Question 1
Question
Deltoid Muscle
Origin:
1.[blank_start]Anterior[blank_end] [blank_start]Lateral third[blank_end] of the [blank_start]clavicle[blank_end]
2. [blank_start]Lateral aspect[blank_end] of the [blank_start]acromion[blank_end]
3. [blank_start]Inferior edge[blank_end] of the [blank_start]spine of the scapula[blank_end]
Insertion: Deltoid tuberosity
Action:
Anterior fibers: [blank_start]abduction[blank_end], [blank_start]flexion[blank_end], [blank_start]horizontal adduction[blank_end], & [blank_start]internal rotation[blank_end]
Middle fibers: abduction
Posterior fibers: Posterior fibers: abduction, [blank_start]extension[blank_end], [blank_start]horizontal abduction[blank_end], & [blank_start]external rotation[blank_end]
Answer
-
Anterior
-
Lateral third
-
clavicle
-
Lateral aspect
-
acromion
-
Inferior edge
-
spine of the scapula
-
abduction
-
horizontal adduction
-
flexion
-
internal rotation
-
extension
-
horizontal abduction
-
external rotation
Question 2
Question
Pectoralis Major
Origin:
1.[blank_start]Medial half[blank_end] of the [blank_start]anterior surface[blank_end] of the [blank_start]clavicle[blank_end]
2. [blank_start]Anterior surface[blank_end] of the [blank_start]costal cartilages[blank_end] of the [blank_start]first six ribs[blank_end]
3. [blank_start]Adjoining portion[blank_end] of the [blank_start]sternum[blank_end]
Insertion:
1. [blank_start]Flat tendon[blank_end] 2 or 3 inches wide to [blank_start]lateral lip[blank_end] of the [blank_start]intertubercular groove[blank_end] of the humerus
Action:
1.Upper fibers (clavicular head): [blank_start]internal[blank_end] rotation, [blank_start]horizontal[blank_end] adduction, [blank_start]flexion[blank_end], [blank_start]abduction[blank_end] (once arm is [blank_start]abducted 90 degrees[blank_end], upper fibers assist in further abduction), & [blank_start]adduction[blank_end] (with arm [blank_start]below 90 degrees of abduction[blank_end])
2. Lower fibers (sternal head): [blank_start]internal rotation[blank_end], [blank_start]horizontal adduction[blank_end], [blank_start]extension from flexed position[blank_end], & adduction
Question 3
Question
Latissimus Dorsi
Origin:
1. [blank_start]Posterior crest[blank_end] of the [blank_start]ilium[blank_end]
2. [blank_start]Back of sacrum[blank_end] and spinous processes of [blank_start]lumbar[blank_end] and [blank_start]lower six thoracic[blank_end] vertebrae
3. Slips from the [blank_start]lower three ribs[blank_end]
Insertion: [blank_start]Medial lip[blank_end] of the [blank_start]intertubercle groove[blank_end] of the humerus
Actions:
1.[blank_start]Adduction[blank_end]
2.[blank_start]Extension[blank_end]
3. [blank_start]Internal rotation[blank_end]
4.[blank_start]Horizontal abduction[blank_end]
Answer
-
Posterior crest
-
ilium
-
Back of sacrum
-
lumbar
-
lower six thoracic
-
lower three ribs
-
Medial lip
-
intertubercle groove
-
Adduction
-
Extension
-
Internal rotation
-
Horizontal abduction
Question 4
Question
Teres Major
Origin: The [blank_start]inferior third[blank_end] of the [blank_start]lateral border[blank_end] of the [blank_start]scapula[blank_end]
Insertion: The [blank_start]medial lip[blank_end] of the [blank_start]intertubercle groove[blank_end] of the humerus
Action:
1. [blank_start]Extension[blank_end], particularly from the [blank_start]flexed position[blank_end] to the [blank_start]posteriorly extended position[blank_end]
2.Internal rotation
3.[blank_start]Adduction[blank_end], particularly from the [blank_start]abducted position[blank_end] down to the side & toward midline of body
Question 5
Question
Coracobrachialis Muscle
Origin: [blank_start]Coracoid process[blank_end]
Insertion: [blank_start]Middle[blank_end] of the [blank_start]medial border[blank_end] of the humeral shaft
Action:
1. [blank_start]Flexion[blank_end]
2. [blank_start]Adduction[blank_end]
3. [blank_start]Horizontal adduction[blank_end]
Answer
-
Coracoid process
-
Middle
-
medial border
-
Flexion
-
Adduction
-
Horizontal adduction
Question 6
Question
Subscapularis Muscle
Origin: [blank_start]entire anterior[blank_end] surface of the subscapular fossa
Insertion: [blank_start]Lesser[blank_end] tubercle of the humerus
Action:
1.[blank_start]Internal rotation[blank_end]
2. [blank_start]Adduction[blank_end]
3.[blank_start]Extension[blank_end]
4.[blank_start]Stabilization[blank_end] of the humeral [blank_start]head in glenoid fossa[blank_end]
Answer
-
entire anterior
-
Lesser
-
Internal rotation
-
Adduction
-
Extension
-
Stabilization
-
head in glenoid fossa
Question 7
Question
Supraspinatus
Origin: [blank_start]Medial two thirds[blank_end] of the supraspinatus fossa
Insertion: [blank_start]Superiorly[blank_end] on the greater tubercle of the humerus
Action:
1.[blank_start]Abduction[blank_end]
2. [blank_start]Stabilization[blank_end] of the humeral [blank_start]head in glenoid fossa[blank_end]
Answer
-
Medial two thirds
-
Superiorly
-
Abduction
-
Stabilization
-
head in glenoid fossa
Question 8
Question
Infraspinatus Muscle
Origin: [blank_start]posterior surface[blank_end] of the scapula just [blank_start]below the spine[blank_end]
Insertion: [blank_start]Greater tubercle[blank_end] on the [blank_start]posterior side[blank_end]
Action:
1.[blank_start]External rotation[blank_end]
2. [blank_start]Horizontal abduction[blank_end]
3.[blank_start]Extension[blank_end]
4. [blank_start]Stabilization[blank_end] of humeral head in the [blank_start]glenoid fossa[blank_end]
Answer
-
posterior surface
-
below the spine
-
Greater tubercle
-
posterior side
-
External rotation
-
Horizontal abduction
-
Extension
-
Stabilization
-
glenoid fossa
Question 9
Question
Teres Minor
Origin: [blank_start]Posterior scapula[blank_end], [blank_start]lateral border[blank_end]
Insertion: [blank_start]Greater tubercle[blank_end] of humerus on the [blank_start]posterior[blank_end]
Action:
1.[blank_start]External rotation[blank_end]
2.[blank_start]Horizontal abduction[blank_end]
3.[blank_start]Extension[blank_end]
4.[blank_start]Stabilization[blank_end] of humeral head in the [blank_start]glenoid fossa[blank_end]
Answer
-
Posterior scapula
-
lateral border
-
Greater tubercle
-
posterior
-
External rotation
-
Horizontal abduction
-
Extension
-
Stabilization
-
glenoid fossa