Flashcards in Lecture 2 - Thoracic Walls and Breast Deck (33):
What are the purposes of the thoracic wall?
Mechanical basis of breathing
There are 3 types of ribs, what are they?
True - attach directly to sternum via costal cartilage
False - Attach to costal cartilage of rib above
Floating - Have no anterior attachment
Which ribs are true
which ribs are false?
Which ribs are floating?
11 and 12
What are the characteristics of a Typical rib?
Superior facet / inferior facet
The Costovertebral joint is weak or strong?
Very Strong - the ribs will break first rather than the joint upon impact
What is the sternal angle?
Between the Manubrium and body of sternum
Thoracic vertebrae mainly permit
What typesof intercostal muscles are there?
The Innermost intercostals are deficient ______
The intercostal space contains:
the 3 different intercostal muscles
The nipple dermatome is __
The sympathetic ganglion is within the ....
The attachment of pectoralis minor is
The action of pec minor is..
elevates ribs/stabilizes scapula
Subclaivus is responsible for
anchoring the clavicle
Which muscle protracts the scapula
Serratus posterior is from
Vertebra to posterior ribs
superior and inferior parts
Serratus posterior superior is from spinous processes...
what is it's action?
c7-T3 (elevates the ribs)
Serratus posterior inferior is from spinous processes...
what is it's action?
depresses the ribs
What are the coverings of the thoracic cage?
sub cut. fat
The mamary gland sits on fascia superifical to..
How many lobules in the mammary gland
Each mammary lobule contains ______, the milk secreting portion of the lobule
Drained by ______duct which opens independently on the nipple
Each mammary lobule contains alveoli, the milk secreting portion of the lobule
Drained by lactiferous duct which opens independently on the nipple
True or False
There is fat between the lobules in the mammary gland
The mammary gland is attached to skin and fascia by
What is the areola?
Pigmented area around nipple
sebaceous glands for lubrication
Thge nipple is ..
Blood supply to the breast is via..
lateral mammary braches of lateral thoracic artery (from axillary artery)
branches from the internal thoracic artery
what percentage of lymph is drained to the axillary nodes?
Cancer cells can cause damage to _______ _______. As a result, the skin becomes thick or dimpled, or the nipple invered, bacause of the...
Cancer cells can cause damage to suspensory ligaments. Asa aresult, the skin becomes thick o dimpled, or the nipple invered, bcause of the shortening of the suspensory ligament