Flashcards in Thoracic and Urinary Anatomy Deck (93)
The thoracic cage is made of?
Sternum anteriorly, 12 T vertebrae posteriorly, 12 pairs of ribs laterally
Manubrium of the sternum articulates with?
Clavicles, 1st ribs, part of 2nd ribs, body of sternum
Body of sternum articulates with what via what type of joint (x2)
Manubrium via symphyseal joint
2-6th ribs via synovial joints
The xiphoid process articulates with what via what type of joint?
Body of sternum via symphyseal joint
Which are true ribs and what makes them true?
Ribs 1-7 because they articulate with the sternum
Which are false ribs and what makes them false?
Ribs 8-10 because they have cartilaginous ends and articulate with the cartilage of the rib above
Which are floating ribs and what makes them floating?
Ribs 11-12 because their anterior ends aren't connected
Which are the typical ribs?
Features of typical ribs (3-9)?
Head w/2 articular demi-facets (art w/vertebra above and corresponding vertebra), neck btw head and tubercle, upper border of neck has crest for superior costotransverse ligament, tubercle with facet for articulation w/TVP of corresponding vertebra and rough part for lateral costotransverse ligament, angle btw tubercle and shaft, shaft has ext/int surfaces and sup (smooth/round)/inf (sharp, costal groove) borders, costal cartilage unossified ant end of rib and costal end articulate w/sternum via synovial joints
Which are the atypical ribs?
1, 2, 10, 11, 12
1st rib features?
shortest, most curvaceous, head has one articular facet, , rib has extra tubercle for anterior scalene attachement, rib has inner/outer borders and sup/inf surfaces, extra groove for subclavian A
2nd rib is atypical because?
Large rough tuberosity for attachment of serratus ant
10-12th rib is atypical because?
One facet on the head
External intercostal muscle fibers run which directions?
Downward and medial (hands in pocket)
Internal intercostal muscle fibers run which directions?
Upward and medial
Innermost intercostal muscle fibers run which directions?
Upward and medial
The neurovascular bundle in the intercostal spacs runs between what muscles?
Internal and innermost intercostals
What is in the intercostal space's neurovascular bundle from top to bottom?
The intercostal space is covered by what externally and internally?
The breast is a modified type of sweat gland, which one?
apocrine sweat gland
The tail of spence is located under what and where?
The breast lies between which ribs?
How many lobules are in the breast embedded in fat and fibrous tissue?
The suspensory ligament of cooper attaches breast glandular tissue to what?
skin above pectoral fascia
Glandular tissue of the breast opens into what ducts?
Lactiferous ducts are dilated towards what sinuses before opening into the nipple?
The nipple line lies in the center of what?
The breast is supplied by what blood vessels?
Lateral thoracic, internal thoracic, 2-4th anterior intercostal, thoraco-acromial A
What is the lymphatic drainage pathway of the breast?
75% to anterior (pectoral) group of axillary nodes, cntral group axillary nodes and apical group axillary nodes and rest drain to nodes along internal T A and a small amount drain to ant ab wall