Infrahyoid muscles

Question 1

Origin of Omohyoid

Answer 1

Inferior belly: Upper border of scapula medial to scapular notch
Superior belly: intermediate tendon

Question 2

Insertion of Omohyoid

Answer 2

Inferior belly: Intermediate tendon
Superior belly: Lower border of the hyoid bone lateral to the sternohyoid insertion

Question 3

Action of Omohyoid

Answer 3

Depresses/ stabilizes the hyoid bone

Question 4

Origin of Sternohyoid

Answer 4

Posterior surfaces of manubrium and sternal end of the clavicle

Question 5

Insertion of Sternohyoid

Answer 5

Lower border of the hyoid bone, medial to the omohyoid muscle insertion

Question 6

Action of Sternohyoid

Answer 6

Depresses/stabilizes the hyoid bone

Question 7

Origin or Sternothyroid

Answer 7

Posterior surface of the manubrium below the origin of the sternohyoid muscle

Question 8

Insertion of Sternothyroid

Answer 8

Oblique line of the thyroid cartilage

Question 9

Action of Sternothyroid

Answer 9

Depresses/stabilizes the hyoid bone

Question 10

Origin of Thyrohyoid

Answer 10

Oblique line of the thyroid cartilage

Question 11

Insertion of Thyrohyoid

Answer 11

Lower border of the hyoid bone

Question 12

Action of Thyrohyiod

Answer 12

Elevates the larynx
Depresses/stabilizes the hyoid bone