INFRAHYOID MUSCLES
| A | Superior constrictor | |
| B | . Inferior constrictor | |
| C | Thyrohyoid | |
| D | Stern thyroid |
| A | Superior constrictor | |
| B | . Inferior constrictor | |
| C | Thyrohyoid | |
| D | Stern thyroid |
Superior constrictor
|
MUSCLE Superior constrictor (Constrictor of pharynx) |
ORIGIN
i. Pterygoid hamulus ii. Pterygomandibular raphe iii. Medial surface of mandible (near lower attachment of pterygomandibular raphe |
INSERTION
Median raphe on posterior wall of pharynx |
|
Inferior constrictor (Constrictor of
Two parts: pharynx) |
i. Thyropharyngeus – from thyroid
cartilage (oblique line of thyroid cartilage) ii. Cricopharyngeus – from cricoid cartilage |
Median raphe on posterior wall of
pharynx |
| Sternothyroid (Infrahyoid muscle) |
i. Posterior surface of manubrium
sterni ii. Adjoining part of first costal cartilage |
Oblique line of thyroid cartilage |
| Thyrohyoid (Infrahyoid muscle) | Oblique line of thyroid cartilage |
Lower border of body and greater
cornua of hyoid bone |
| A | Muscle fibers in the ligament of Treitz | |
| B |
Omohyoid |
|
| C |
Occipitofrontalis |
|
| D |
Sternocleidomastoid |
Digastric muscles refers to muscles with two bellies. Sternocleidomastoid has two heads but it does not have two bellies and hence this muscle cannot be termed as a digastric muscle.
Which of the following hyoid muscles is an important landmark in both the anterior and posterior triangles of the neck?
| A |
Geniohyoid |
|
| B |
Mylohyoid |
|
| C |
Omohyoid |
|
| D |
Sternohyoid |
Which muscle is innervated by a branch of the ansa cervicalis?
| A |
Sternocleidomastoid |
|
| B |
Platysma |
|
| C |
Sternohyoid |
|
| D |
Trapezius |
All are elevators of larynx except:
| A |
Thyrohyoid |
|
| B |
Digastric |
|
| C |
Stylohyoid |
|
| D |
mylohyoid |
The main laryngeal elevators are: Digastric anterior and posterior, the stylohyoid, mylohyoid, geniohyoid, genioglossus, hyoglossus, and thyropharyngeus muscles

