Muscle Origin and Insertion Flashcards
Masseter
O- Maxillary process of the zygomatic bone
I- superficial side of the ramus of the mandible
Temporalis
O- Temporal Fossa
I- coronoid process of the mandible
Sternocleidomastoid
O- Clavicle and sternum
I- Mastoid Process
Trapezius
O- occipital bone, ligamentum nuchae, and the spinous process of T1-T12
I- lateral 3rd of the clavicle, as well as the acromium, and spine of the scapula
Diaphram
O- Sternum and Xiphoid process, lower 6 ribs
I- Central Tendon appanerousis
External Oblique
O- outer part of 5th-12th ribs
I- Linea alba, pubic crest, pubic tubercle, xiphoid process
Internal Oblique
O- inguinal ligament, iliac crest
I- linea alba, pectenial line of pubis, ribs 10-12
Transverse Abdominus
O- lateral 1/3rd of the superior surface of the inguinal ligament, iliac fascia
I- xiphoid process, linea alba, pubic crest
Rectus Abdominus
O- Pubic symphysis and crest
I- Xiphoid process, costal cartilages of ribs 5-7
Quadratus Lumborum
O- iliolumbar ligament and iliac crest
I- inferior border of 12th rib and transverse process of L1-4
Levator Scapula
O- Transvers process of the atlas and axis, posterior tubercles of C3-4
I- Superior angle of the medial border of the scapula
Rhomboid Major
O- Spinous process of T2-5
I- Medial border of the scapula to the inferior angle
Rhomboid Minor
O- inferior border of the nuchal ligament, spinous process of C7-T1
I- Medial border of the scapula superior to rhomboid major
Serratus Anterior
O- upper 8 ribs and intercostal membranes around mid clavicular line
I- inner medial border of the scapula
Pectoralis Minor
O- anterior surface of 3-5th ribs
I- over the coracoid process to the greater tubercle the humerus
Supraspinatus
O- Supraspinous fossa
I- Superior facet of the greater tubercle of the humerus
Infraspinatus
O- infraspinous fossa
I- middle facet of the greater tubercle of the humerus
Subscapularis
O- subscaplular fossa
I- Lesser tubercle of the humerus
Pectoralis Major
O- clavicular head and anterior surface of medial half of clavicle, sternalcostal head, anterior surface of sternum, superior 6 costal cartilages, aponeurosis of external oblique
I- Lateral lip of the bicipital groove
Deltoid
O- lateral part of clavicle as well as the spine and acromium of the scapula
I- Deltoid tuberosity
Latissimus Dorsi
O- spinous process of T7-12, thoracolumbar fascia, iliac crest, inferior 3-4 ribs, inferior angle of the scapula
I- floor of inter tubercular groove of humerus
Teres Major
O- posterior inferior angle of the scapula
I- medial lip of intertubercular sulcus of the humerus
Teres Minor
O- lateral border of the scapula superior to Teres major
I- Inferior facet of the greater tubercle of the humerus