Thoracic Cavity KIA

The "true ribs" are attached directly to the sternum anteriorly. These ribs include ribs:

1-7

The seventh rib articulates with the ______ and ______ vertebral bodies.

5th; 7th

The clavicular portion of the pectoralis major muscle CANNOT:

aid in exhalation if the arms are overhead

During deep inspiration, the upper rib cage expands more in a(n) ____ direction and the lower rib cage expands more in a(n) ____ direction.

anterior; lateral

The central tendon of the diaphragm becomes stabilized by:

compression on the abdominal viscera

The active contribution of the lateral pterygoid in relation to the disc is it:

eccentrically controls posterior translation of the disc during elevation

Actions of the medial pterygoid include:

elevates and contralaterally deviates

The structure that tethers the disc from moving too far anteriorly is the:

inferior retrodiscal lamina

Contraction of the diaphragm causes:

inhalation

The muscle that has attachments to the articular disc is the:

lateral pterygoid

Muscles contracting during mandibular deviation to the right include:

left medial and lateral pterygoid

Muscles of mandibular elevation include:

masseter and temporalis

Muscles that can cause ipsilateral deviation.

masseter and temporalis

Contraction of the diaphragm results in all the following EXCEPT:

negative pressure results on the abdominal viscera

Muscles NOT attached to the superior and inferior borders of the ribs.

outermost intercostal

With reciprocal clicking, the first click is ______ and the second is ______.

recapturing; dislocating

The manubriosternal joint is attached to rib

rib 2

The arthrokinematic motion during mandibular depression is ______ in the INFERIOR space and ______ in the SUPERIOR space.

roll; glide

Ribs 8 through 10 are "false ribs" because:

they do not attach directly to the sternum.

The costovertebral joint is an articulation between the ________ and the ________.

vertebral body; rib head