Lab Midterm 2

Trapezius

Origin: Superior nuchal line, nuchal ligament, spinous processes C7-T12; Insertion: Lateral clavicle, acromion, spine of scapula

Rhomboid Major

Origin: Spinous processes T2-T5; Insertion: Medial border of scapula

Rhomboid Minor

Origin: Spinous processes C7-T1; Insertion: Medial border of scapula

Supraspinatus

Origin: Supraspinous fossa of scapula; Insertion: Greater tubercle of humerus

Infraspinatus

Origin: Infraspinous fossa of scapula; Insertion: Greater tubercle of humerus

Teres Minor

Origin: Lateral border of scapula; Insertion: Greater tubercle of humerus

Subscapularis

Origin: Subscapular fossa of scapula; Insertion: Lesser tubercle of humerus

Teres Major

Origin: Inferior angle and lateral border of scapula; Insertion: Medial lip of intertubercular sulcus of humerus

Latissimus Dorsi

Origin: Thoracolumbar fascia (lumbar & sacral spines); Insertion: Floor of intertubercular sulcus of humerus

Erector Spinae

Origin/Insertion: Group of muscles (iliocostalis, longissimus, spinalis) spanning vertebral column

Triceps Brachii

Origin: Long head—Infraglenoid tubercle (scapula); Lateral & medial heads—posterior humerus; Insertion: Olecranon process of ulna

Flexor Carpi Ulnaris

Origin: Medial epicondyle of humerus; Insertion: Pisiform, hamate, base of metacarpal V

Flexor Carpi Radialis

Origin: Medial epicondyle of humerus; Insertion: Bases of metacarpals II and III

Palmaris Longus

Origin: Medial epicondyle of humerus; Insertion: Flexor retinaculum and palmar aponeurosis

Pronator Teres

Origin: Medial epicondyle of humerus; coronoid process of ulna; Insertion: Lateral surface of midshaft of radius

Flexor Digitorum Superficialis

Origin: Medial epicondyle (humerus), coronoid process (ulna), proximal anterior radius; Insertion: Middle phalanges of digits 2-5

Flexor Digitorum Profundus

Origin: Proximal anterior ulna and interosseous membrane; Insertion: Distal phalanges of digits 2-5

Flexor Pollicis Longus

Origin: Proximal anterior radius and interosseous membrane; Insertion: Distal phalanx of thumb

Pronator Quadratus

Origin: Anterior distal ulna; Insertion: Anterior distal radius

Pectoralis Minor

Origin: Ribs 3-5; Insertion: Coracoid process of scapula

Serratus Anterior

Origin: Ribs 1-9; Insertion: Medial border of scapula (anterior surface)

Sternocleidomastoid

Origin: Clavicle and manubrium; Insertion: Mastoid process and superior nuchal line

Pectoralis Major

Origin: Medial clavicle, sternum, costal cartilages 1-6; Insertion: Lateral lip of intertubercular sulcus of humerus

Deltoid

Origin: Clavicle (anterior), acromion (lateral), scapular spine (posterior); Insertion: Deltoid tuberosity of humerus

Brachialis

Origin: Anterior distal humerus; Insertion: Ulnar tuberosity and coronoid process

Brachioradialis

Origin: Lateral distal humerus; Insertion: Styloid process of radius

Biceps Brachii

Origin: Long head—supraglenoid tubercle; Short head—coracoid process; Insertion: Radial tuberosity

Extensor Carpi Radialis Longus

Origin: Lateral supracondylar ridge (humerus); Insertion: Base of metacarpal II

Extensor Carpi Radialis Brevis

Origin: Lateral epicondyle (humerus); Insertion: Base of metacarpal III

Extensor Carpi Ulnaris

Origin: Lateral epicondyle (humerus), posterior ulna; Insertion: Base of metacarpal V

Extensor Digitorum

Origin: Lateral epicondyle (humerus); Insertion: Middle and distal phalanges of digits 2-5

Extensor Digiti Minimi

Origin: Lateral epicondyle; Insertion: Middle and distal phalanx of digit 5

Extensor Pollicis Longus

Origin: Posterior ulna and interosseous membrane; Insertion: Distal phalanx of thumb

Abductor Pollicis Longus

Origin: Radius, ulna, interosseous membrane; Insertion: Base of metacarpal I

Extensor Pollicis Brevis

Origin: Distal posterior radius and interosseous membrane; Insertion: Proximal phalanx of thumb

External Oblique

Origin: Ribs 5-12; Insertion: Linea alba and iliac crest

Internal Oblique

Origin: Iliac crest and inguinal ligament; Insertion: Linea alba and ribs 7-10

Rectus Abdominis

Origin: Pubic crest and symphysis; Insertion: Xiphoid process and costal cartilages 5-7

Transverse Abdominis

Origin: Iliac crest, inguinal ligament, thoracolumbar fascia, ribs 7-12; Insertion: Linea alba, pubis, xiphoid process

Gluteus Maximus

Origin: Ilium and sacrum; Insertion: Iliotibial band and gluteal tuberosity

Gluteus Medius

Origin: Ilium; Insertion: Greater trochanter

Biceps Femoris (Long Head)

Origin: Ischial tuberosity; Insertion: Head of fibula

Biceps Femoris (Short Head)

Origin: Linea aspera (femur); Insertion: Head of fibula

Semitendinosus

Origin: Ischial tuberosity; Insertion: Medial proximal tibia

Semimembranosus

Origin: Ischial tuberosity; Insertion: Medial condyle of tibia

Fibularis Longus

Origin: Proximal fibula; Insertion: Metatarsal I and medial cuneiform

Fibularis Brevis

Origin: Distal fibula; Insertion: Metatarsal V

Gastrocnemius

Origin: Medial and lateral femoral condyles; Insertion: Calcaneus via calcaneal tendon

Soleus

Origin: Posterior tibia and fibula; Insertion: Calcaneus via calcaneal tendon

Flexor Digitorum Longus

Origin: Posterior tibia; Insertion: Distal phalanges of toes 2-5

Flexor Hallucis Longus

Origin: Posterior fibula and interosseous membrane; Insertion: Distal phalanx of hallux

Tibialis Anterior

Origin: Lateral condyle and shaft of tibia, interosseous membrane; Insertion: Medial cuneiform and metatarsal I

Rectus Femoris

Origin: Anterior inferior iliac spine and superior acetabulum; Insertion: Tibial tuberosity via patellar ligament

Vastus Medialis

Origin: Intertrochanteric line and linea aspera; Insertion: Patella via quadriceps tendon

Vastus Lateralis

Origin: Greater trochanter and linea aspera; Insertion: Patella via quadriceps tendon

Vastus Intermedius (Under Rectus Femoris)

Origin: Anterior femoral shaft; Insertion: Patella via quadriceps tendon

Sartorius

Origin: Anterior superior iliac spine; Insertion: Medial proximal tibia

Tensor Fascia Lata

Origin: Iliac crest and ASIS; Insertion: Iliotibial band

Gracilis

Origin: Pubis; Insertion: Medial tibia

Adductor Longus

Origin: Pubis; Insertion: Linea aspera

Adductor Magnus

Origin: Pubis and ischium; Insertion: Linea aspera, gluteal tuberosity, adductor tubercle

Adductor Brevis

Origin: Pubis; Insertion: Linea aspera

Extensor Digitorum Longus

Origin: Lateral condyle of tibia, fibula, interosseous membrane; Insertion: Middle and distal phalanges of toes 2-5

Extensor Hallucis Longus

Origin: Anterior fibula and interosseous membrane; Insertion: Distal phalanx of hallux