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1
Respiration Lab 3
Muscles of Respiration (Noncadaver Lab)
To the Instructor: This lab activity parallels Lab 2, in that it is designed to be a means of
reviewing the musculature associated with respiration. You may wish to add some of the
following images from the Image Library to the lab guide so that students will have them at hand
as a reference in the lab.
Figure
2-25 Diaphragm, inferior view
2-26B Diaphragm, lateral view
2-28A Internal and external intercostals
2-30 Accessory inspiration and expiration muscles: Posterior thoracic
muscles, serratus posterior superior and inferior, levatores costarum
(brevis and longis)
2-31 Accessory inspiration muscles: Anterior thoracic and neck muscles;
sternocleidomastoid; pectoralis major and minor; scalenus anterior,
medius, and posterior
2-33 Posterior accessory muscles of respiration: Trapezius, levator
scapulae, rhomboideus minor and major, serratus posterior and
inferior, quadratus lumborum
2-35 Abdominal accessory muscles of expiration: Internal intercostals,
external oblique abdominis, internal oblique abdominis, transversus
abdominis
2-38 Abdominal aponeurosis and abdominal accessory muscles of
expiration: Internal intercostals, external oblique abdominis, internal
oblique abdominis, transversus abdominis
This is a great opportunity to review the muscles of inspiration and expiration. Bring your
various anatomy resource texts so that you and the students can review photos of specimens,
especially of the diaphragm (which is very hard to visualize without a cadaver). As you present
