Axilla & Breast Anatomy Flashcards
Mammary Glands
Modified ______________
Develop from ________ along __________
Mammary Glands
Modified apocrine sweat glands
Develop from ectodermal inversion along Milk Lines
What happens when normal regression fails?
When normal regression fails, accessory breasts (polymastia**) or accessory nipples (**polythelia) may occur
Muscles separated from breast by ________________:
- Loose areolar tissue
- Allows movement of the breast on chest wall
- Contains lymphatics & small vessels
Muscles separated from breast by retromammary space:
- Loose areolar tissue
- Allows movement of the breast on chest wall
- Contains lymphatics & small vessels
Each mammary gland is firmly attached to the overlying skin of the breast via suspensory _______________
Each mammary gland is firmly attached to overlying skin of the breast via suspensory COOPERS LIGAMENTS
________________________:
The skin of the breast is tethered by _____________
accumulation of fluid may cause the skin to have a dimpled appearance (___________)
Cutaneous lymphoedema
As the skin of the breast is tethered by Cooper’s ligaments
accumulation of fluid may cause the skin to have dimpled appearance (Peau d‘Orange)
Most common site for malignant tumours of the breast?
Superior lateral quadrant (Includes axillary tail/process)
Innervation of the Breast?
Anterior & lateral cutaneous branches of 4th-6th intercostal nerves
SUBCLAVIAN a. → _____________
SUBCLAVIAN a. → Internal thoracic a.
AXILLARY a → ____________
→____________
AXILLARY a → Lateral Thoracic a.
→Thoracoacromial a.
DESCENDING (THORACIC) aorta → _________________
DESCENDING (THORACIC) aorta → Intercostal a.
Lymph is Present in Most Tissues Except?
CNS
cartilage
bone
placenta
teeth
cornea
thymus & marrow
________________ is used as a landmark of lymph node location
Pectoralis minor as a landmark of lymph node location
- Level I: below lower edge pec minor
- Level II: deep to pec minor
- Level III: above/medial to pec minor
