Muscles to know origin and insertion

Question 1

Omohyoid (infrahyoid)

Answer 1

Originates: Superior border of the scapula and superior transverse ligament
Inserts: Body of hyoid bone.

Question 2

Masseter

Answer 2

Originates: maxilla and zygomatic arch
Inserts: mandible

Question 3

Sternocleidomastoid

Answer 3

Originates: Sternal head: manubrium of the sternum; clavicular head: the medial third of the clavicle.
Insertion: Mastoid process of temporal bone and lateral half of superior nuchal line of the occipital bone.

Question 4

Pectoralis major

Answer 4

Originates: Clavicle (clavicular head), sternum, and costal cartilages of ribs 2–6 and sometimes ribs 1–7 (sternocostal head).
Insertion: Greater tubercle and lateral lip of intertubercular sulcus of the humerus.

Question 5

Rectus abdominous

Answer 5

Originates: Pubic crest and pubic symphysis
Inserts: Cartilage of ribs 5–7 and xiphoid process

Question 6

External oblique

Answer 6

Originates: Ribs 5–12
Insertion: Iliac crest and linea alba

Question 7

Latissmus dorsi

Answer 7

Originates: Spines of T7–L5, lumbar vertebrae, crests of sacrum and ilium, ribs 9–12 via the thoracolumbar fascia.
Inserts: Intertubercular sulcus of the humerus.

Question 8

Levator scapulae

Answer 8

Originates: Transverse processes of C1–C4.
Inserts: Superior vertebral borderof scapula

Question 9

Subscapularis

Answer 9

Originates: Subscapular fossa of scapula
Insertion: Lesser tubercle of humerus.

Question 10

Biceps brachii

Answer 10

Origination: Long head originates from the tubercle above the glenoid cavity of the scapula (supraglenoid tubercle)
Insertion: Radial tuberosity of radius and bicipital aponeurosis

Question 11

Brachialis

Answer 11

Origination: Distal, anterior surface of the humerus
Insertion: Ulnar tuberosity and coronoid process of ulna

Question 12

Brachioradialis

Answer 12

Origination: Lateral border of the distal end of the humerus
Insertion: Superior to the styloid process of the radius

Question 13

Gluteus maximus

Answer 13

Originates: Iliac crest, sacrum, coccyx, and aponeurosis of sacrospinalis
Insertion: Iliotibial tract of fascia lata and superior lateral part of linea aspera (gluteal tuberosity) under greater trochanter of femur

Question 14

Tibialis anterior

Answer 14

Origination: Lateral condyle and body of tibia and interosseous membrane (sheet of fibrous tissue that holds shafts of tibia and fibula together)
Insertion: Metatarsal I and first (medial) cuneiform

Question 15

Gastrosnemius

Answer 15

Origination: Lateral condyle of femur (origin of lateral head), medial condyle of the femur
(origin of medial head) and articular capsule of the knee
Insertion: Calcaneus by way of the calcaneal tendon