Laryngeal Musculature #3 Elevators Flashcards
1
Q
In general, where are the points of attachment for the extrinsic muscles of the larynx? What is their function?
A
- One attachment to the larynx and the other attachment on a structure outside the larynx
- Forms a network that surrounds the larynx and anchors it in position within the neck
- Makes major adjustments to the larynx
- Elevating
- Depressing
2
Q
What are the 2 main categories of extrinsic muscles of the larynx?
A
- Hyoid and Laryngeal Elevators
- Hyoid and Laryngeal Depressors
3
Q
What are the names of the Hyoid and Laryngeal Elevators?
A
- Digastricus
- Stylohyoid muscle
- Mylohyoid muscle
- Geniohyoid muscle
- Genioglossus muscle
- Hyoglossus muscle
4
Q
What are the 2 parts of the digastricus muscle? What are their actions?
A
- Anterior belly
- Function: elevates hyoid anteriorly (pulls it up and forward)
- Posterior belly
- Function: elevates hyoid posteriorly (pulls it up and back)
5
Q
Action for stylohyoid muscle
A
- elevates hyoid posteriorly
6
Q
Location detail and action of Mylohyoid muscle
A
- Makes up the floor of the oral cavity
- Action: elevates hyoid anteriorly
7
Q
Action of Geniohyoid muscle
A
-Elevates hyoid anteriorly
8
Q
Detail and action of Genioglossus muscle
A
- Forms the primary muscle of the tongue
- Elevates hyoid
9
Q
Action of hyoglossus muscle
A
- Elevates hyoid and depresses tongue
10
Q
Label the the Extrinsic Laryngeal Muscles (Elevators)
A
A1 - Diagastric Anterior Belly
A2 - Diagastric Posterior Belly
B - Stylohyoid
C - Mylohyoid
D - Geniohyoid
E - Genoiglossus
F - Hyoglossus
