WEEK 1 PEC REGION, BREAST, AXILLA Flashcards
Why does the variable inferior border of pec region vary?
Bc females have different size breasts, typically around T5 for males (nipple at T4)
What makes up the thoracic cage?
Sternum, jugular notch, vertebrae
Another name for jugular notch?
Suprasternal notch
What makes up the pectoral girdle?
Clavicle and scapula held together by muscles and ligaments
Does the origin or insertion typically move?
Insertion; origin is a fixed location
The lateral pectoral nerves goes through both the pec major and minor?
False. Lateral nerve only goes through Pec Major. Medial Pec nerve goes through BOTH
What makes the base of the axilla?
Fascia and skin
What makes the apex of the axilla?
Clavicle and rib 1
What is the “inlet” of the axilla?
The apex region (clavicle and rib 1)
What makes the anterior wall of the axilla?
Pectoral muscles
What makes the lateral wall of the axilla?
Humerus
What makes the medial wall of the axilla?
Rib cage
What makes the posterior wall of the axilla?
Subscapularis (teres major and latissimus dorsi)
What are the contents of axilliary?
Axillary artery & its branchs, axillary vein, axillary lymph nodes, brachial plexus of nerve (ventral rami of C5-T1) and axillary tail of Spence (of female breast)
Where is the axillary tail of Spence?
Female breast that connects into axillary
What are the vertebrae that start the brachial plexus?
C5-T1
What is found WITHIN the axillary sheath?
Axillary artery, axillary vein, brachial plexus nerves
Artery verses vein
Artery= away from heart, vein= towards heart
The axillary artery is a continuation of what artery?
Subclavian artery
The axillary artery STARTS where?
At the lateral border of the 1st rib
Axillary artery supplies what areas of the body?
Pectoral region, axilla, upper extremity (some back around scapula)