Physiology of Smooth Muscles -Mechanics of contraction and relaxation
Anatomy of the breast
1. ANATOMY OF THE BREAST
ORIBA DAN LANGOYA, MBchB
Makerere University School of Medicine
Surgery Club Mini ward Round
2. INTRODUCTION
Embryology
Epithelial/mesangial-
glandular tissues of
breast 4th to 6th weeks
Develops from milk
streak
thoracic mammary
bud appears at
approx. 49day. Rest
involutes
Dermally derived
Lies cushioned in fat
Between layers of
superficial pectoral
fascia
3. Anatomy
Breasts form a 2ND ary
sexual feature of
females.
Breast lies upon the
deep pectoral fascia,
anterior, and inferiorly,
external oblique and its
aponeurosis as the
latter forms the anterior
wall of the sheath of
rectus abdominis
5. Blood Supply
Arteries
Internal thoracic artery
Intercostal arteries
The axillary artery
Lymph Drainage
Lateral quad drain into
ant axillary or pect
Some vessels comm
with lymph vessels of
the opp breast & with
those of the anterior
abdominal wall
The med quad drain
into internal thoracic
group