Muscles Of The Anterior Neck That Assist In Deglutition And Speech

Question 1

Digastric

Suprahyoid muscle

Answer 1

O-Mastoid process [deep to sternocleidomastoid and splenius capitis]

I-Inferior border of the mandible

A-With hyoid bone fixed, depress the mandible [Temporomandibular joint]
With mandible fixed, elevate the hyoid bone
Retract the mandible [TM joint]

N-Anterior belly: trigeminal [V] [mandibular division]
Posterior belly: facial [ VII]

Question 2

Stylohyoid

Suprahyoid muscle

Answer 2

O-styloid process

I-hyoid bone

A-Elevate hyoid and tongue
Depress mandible [TM joint]

N-facial [ VII]

Question 3

Mylohyoid

Suprahyoid muscle

Answer 3

O-Underside of mandible

I-hyoid bone

A-Elevate hyoid and tongue
Depress mandible [TM joint]

N-Trigeminal [ V]

Question 4

Geniohyoid

Suprahyoid muscle

Answer 4

O-Underside of mandible

I-hyoid bone

A-Elevate hyoid and tongue
Depress mandible [TM joint]

N-C1, 2

Question 5

Omohyoid

Infrahyoid muscle

Answer 5

O-Superior border of the scapula

I-hyoid bone

A-depress the hyoid bone and thyroid cartilage

N-C1, 2,3

Question 6

Sternohyoid

Infrahyoid muscle

Answer 6

O-Top of manubrium

I- Hyoid bone

A-depress the hyoid bone and thyroid cartilage

N- C1, 2,3

Question 7

Sternothyroid

Infrahyoid muscle

Answer 7

O-Top of manubrium

I-Thyroid cartilage

A-depress the hyoid bone and thyroid cartilage

N- C1, 2,3

Question 8

Thyrohyoid

Infrahyoid muscle

Answer 8

O-thyroid cartilage

I-hyoid bone

A-Depress the hyoid bone and thyroid cartilage

N-C1,2