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Phonation Lab 3
Extrinsic Laryngeal Musculature (Cadaver or Noncadaver Lab)
To the Instructor: You can approach this as either a cadaver or noncadaver lab. With a cadaver
lab, you will often be limited to the specimens on hand. I use the cadaver lab that is part of our
premed program in biology, and cadavers are always in varying stages of dissection. In a
noncadaver format, you can bring in your anatomy texts or use the figures listed next from the
Image Library to go over the anatomical relationships. Consider also examining the photographs
that are listed as well as the line drawings, so that the relationships can be seen more clearly.
During a recent lab, one of my students looked at the sternohyoid and said, “That looks just like
the picture in the book! Life imitates art!”)
Figure
4-18 Digastricus anterior and posterior, stylohyoid, mylohyoid
4-19 Digastricus anterior and posterior, stylohyoid, mylohyoid, geniohyoid
4-20 Sternocleidomastoid, omohyoid, sternohyoid
4-21 Sternothyroid and thyrohyoid
Phonation Lab 3
Extrinsic Laryngeal Musculature (Cadaver or Noncadaver Lab)
We will examine the muscular support for the larynx in this lab. You will want to review the
infrahyoid and suprahyoid musculature in preparation for this lab.
Extrinsic muscles of the larynx:
sternothyroid
thyrohyoid
Suprahyoid muscles (hyoid elevators):
Infrahyoid muscles (hyoid depressors):
sternohyoid
