Term
| what are the three parts of the sternum, superior to inferior? |
|
Definition
| manubrium, body, xyphoid process |
|
|
Term
| what are ribs 1-7, 8-10, and 11-12 called, respectively? |
|
Definition
1-7 - vertebrosternal/true ribs
8-10 - vertebrochondral/false ribs
11-12 - floating/false ribs |
|
|
Term
| how do thoracic vertebrae articulate with ribs? |
|
Definition
| through the superior costal, inferior costal, and transverse costal facets |
|
|
Term
| what would the head of rib 7 articulate with? |
|
Definition
superior costal facet of T7 and inferior costal facet of T6.
costal tubercle articulates with traverse process of T7 |
|
|
Term
|
Definition
|
|
Term
| how are ribs 10-12 different? |
|
Definition
only 1 facet each
11-12 have no neck or tubercle |
|
|
Term
|
Definition
| part of the thoracic wall moves freely due to multiple rib fractures - in on inspiration, etc. |
|
|
Term
| what is the upper opening of the rib cage called? |
|
Definition
| the superior thoracic aperture, aka thoracic outlet |
|
|
Term
| what is the upper opening of the rib cage called? |
|
Definition
| the superior thoracic aperture, aka thoracic outlet |
|
|
Term
| what is costoclavicular syndrome, how does it present, and how is it treated? |
|
Definition
compression of the subclavian artery by the first rib and clavicle.
causes coldness and pallor in the upper limb and diminished radial pulse.
treat with surgery to remove blood clot and/or remove rib 1 (graft vein, clean out scar tissue) |
|
|
Term
| what is located at the manubrium and body articulation? |
|
Definition
| Sternal angle of Louis - alongside rib 2 |
|
|
Term
| what are the 4 components of intercostal nerves? |
|
Definition
| somatic motor, general sensory, visceral motor, and visceral sensory |
|
|
Term
| what dermatomes are at the level of the nipple and umbilicus? |
|
Definition
|
|
Term
| external intercostal and internal intercostal muscles |
|
Definition
both innervated by intercostal nerves T1-11.
Action: during inspiration (elevate ribs) and expiration (depress ribs), respectively |
|
|
Term
| what muscles can you see on the inside of ribs? |
|
Definition
| subcostal muscles (depress ribs) and transversus thoracis (star-shaped from xiphoid process out - serve to depress costal cartilages) |
|
|
Term
| where do the anterior intercostal arteries originate from? |
|
Definition
upper 6 - from internal thoracic artery
lower 5 - from musculophrenic artery |
|
|
Term
| where do the posterior intercostal arteries originate from? |
|
Definition
upper 2 - from superior thoracic artery
lower 9 - from thoracic aorta |
|
|
Term
| where does the internal thoracic artery originate and what are its branches? |
|
Definition
| originates at the subclavian artery and gives off anterior intercostal 1-6, superior epigastric and musculophrenic |
|
|
Term
| what do intercostal veins drain into? |
|
Definition
anterior - internal thoracic veins
posterior - azygos system |
|
|
Term
what cervical vertebrae supply the phrenic nerve?
what runs with the phrenic nerve |
|
Definition
C3,4,5
pericardiacophrenic vessels |
|
|
Term
| where does the mediastium split into superior and inferior? |
|
Definition
|
|
Term
|
Definition
| Glandular tissue --> lactiferous duct --> lactiferous sinus |
|
|
Term
| what is in between the pec major and the breast? |
|
Definition
|
|
Term
| what vascularizes the breast? |
|
Definition
| medial mammary branches from the internal thoracic artery, lateral thoracic and thoracoacromial branches from the axillary artery, and the posterior intercostal arteries from the aorta |
|
|
Term
| where does most of the lymph from the breast drain? |
|
Definition
via lymphatic vessels that drain into axillary nodes.
also parasternal and abdominal nodes. |
|
|
Term
| mastectomy can cause damage to what nerve? |
|
Definition
|
|
