DSA sternum/sibson's/clavicle Flashcards
where does the abdominal diaphragm attach
to the first three lumbar vertebrae
lower 6 ribs
xiphoid process of the sternum
during respiration which part of the chest cage changes more dramatically
the inferior portion
with deep inhalation what happens to the sternum
the entire sternum glides superiorly and the caudal end moves anteriorly
with exhalation what happens to the sternum
the entire sternum glides inferiorly and the inferior end moves posteriorly
what are the different diagnoses of the sternum
rotated right (manubrium and body)
sidebending (manubrium and body)
backward and forward bending (manubrium and body)
what happens with forward bending of the manubrium
decreases the angle (measured from the outside)
what happens with backward bending of the manubrium
increases the angle
what happens with sidebending of the sternum
it is based on the top part of the sternum body and which direction that goes
what happens with backward bending of the body of the sternum
decreases angle
what happens with forward bending of the body of the sternum
increases angle
in abduction the distal end of the clavicle moves… and the proximal end moves
superiorly (distal end)
inferiorly (proximal end)
in flexion the distal end of the clavicle moves ….
and the proximal end moves…
distal end–> anterioly
proximal end–> moves posteriorly
what does the intervclavicular ligament resist
superior displacement of the sternal end of the clavicle
the costoclavicular ligament resists what
limits upward movement of the lateral end of the clavicle
helps with a downward glide of the sternal end of the clavicle with abduction of the clavicle
what is the strongest ligament between the clavicle and the scapula
coracoclavicular ligament
conoid
trapezoid part
what is the thoracic inlet boundaries
manubrium of sternum anterioly
first thoracic posteriorly
first rib laterally
where is the thoracic outlet
space between the anterior scalenes where the subclavian artery and brachial plexus pass
where does sibson’s fascia originate
originates from the deep cervical fascia surrounding the longus coli musculature of the anterior cervical spine. Some texts suggest that it also attaches to the transverse processes of C7
where does sibson’s fascia connect
to the superomedial border of the 1st rib
it is contiguous with the axillary sheath and endothoracic fascia covering the cupula of the lungs
and therefore it is also called suprpleural membrane
what structures pass through the functional diaphragm created by sibson’s fascia
- Recurrent Laryngeal Nerve
- Vagus Nerve
- Stellate Ganglion
- Phrenic Nerve
- Brachial Plexus
- Common Carotid Artery
- Vertebral Artery
- Thyrocervical Trunk
- Internal Thoracic Artery (especially cardiothoracic surgeons)
- Internal Jugular Vein
- Subclavian Artery and Vein
- Thoracic Duct and Right Lymphatic Duct
- Anterior Cervical Lymph Nodes
what does the right lymphatic duct drain
lymph from the upper right quadrant of the body into the right subclavian vein
what does the thoracic duct drain
lymph from the rest of the body into the left jugulovenous angle
WHAT happens if lymphatic return is inhibited
stagnation of pressure gradients occurs leading to lymphatic stasis and diminishment of cellular, tissue and organs
