Head And Neck Muscle Flashcards
How are the body muscles classified?
- Voluntary, involuntary, cardiac
- Shape
- Muscle fibre direction
- Action
- Location
- Bones they attach to
Which bone is next to the longus colli?
Longus capitis (directly after it)
What is the action of the sternocleidomastoid
- Bilateral: flexes the neck
- Unilateral: tilts chin
What forms the floor of the submental and submandibular triangles
- Stylohyoid
- Mylohyoid
- Digastric
- Genioglossus
What forms the submental triangle
- Hyoid bone
- Two mylohyoid muscles
What forms the submandibular triangle
- Digastric muscle (bellies= two)
- Mandible
Two sides of rhe submandibular triangle
Submental borders and submandibular borders (location)
Submandibular (2)
Submental (1) = middle
Name the anterior triangles of the head and neck muscles
- Submandibular triangle (two triangles)
- Submental triangle (middle triangle between submandibular triangle)
Name the 3 muscles that assist in protrusion and retraction and mastication (face muscles)
- Masseter
- Medial pterygoid
- Lateral pterygoid
Name the two pterygoid muscles
- lateral and medial pterygoid
Which muscles make up the posterior triangle? (Head and neck muscles)
Anterior:
- Posterior border of sternocleidomastoid
Posterior:
- Anterior border of trapezius muscle
Base:
- Middle third of clavicle
Floor:
- Anterior, middle and posterior scalene muscle
- Splenius capitis and levator scapulae
- Inferior belly of omohyoid
What makes up the submental borders for the submental triangle?
- Anterior belly of digastric muscle (left)
- Anterior belly of digastric muscle (right)
- Superior border of hyoid bone (base)
Which muscle is responsible for opening the eye?
Levator palpebrae superioris m.
Which muscles are responsible for lifting the eyebrows?
Which muscle is responsible for bringing the eyebrows down?
Elevation: Occipitofrontalis (on each side)
Depression: corrugator supercilii
What is/are the action(s) of the sternocleidomastoid muscle?
- Flexion of the neck
- Tilts the chin to the opposite side
