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aA brief ppt description about mammary gland which may be necessary for teaching for first year mbbs bds and paramedical students, hope i may be usefull
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UPPER LIMBREGIONAL ANATOMY
DR SURAJIT KUNDUSR. LECTURER
DEPT. OF ANATOMYMAITRI INSTITUTE OF DENTAL SCIENCES & RESEARCH
CENTREANJORA, DURG
CHHATTISHGARH, INDIA
INTRODUCTIONPARTS OF THE HUMAN
BODY: HEAD NECK AND BRAIN, THORAX,
ABDOMEN, EXTREMITIES (UPPER LIMB AND LOWER LIMB)
UPPER LIMBHAS 4 PARTS- SHOULDER, ARM, FOREARM
AND HAND
THE PECTORAL
REGION
THE MAMMA
RY GLAND
OR
THE BREAST
INTRODCTION PRESENT BILATERALLY IN BOTH SEXES
MALE AND IMMATURE FEMALES- RUDIMENTARY
MATURE FEMALES- WELL DEVELOPED AND BECOMES MORE PROMINENT DURING PREGNANCY AND LACTATION
MOST IMPORTANT STRUCTURE OF THE PECTORAL REGION
IT IS A MODIFIED SWEAT GLAND (APOCRINE TYPE).
POSITION
LIES IN THE SUPERFICIAL FASCIA OF THE PECTORAL REGION
BUT
A SMALL EXTENSION KNOWN AS AXILLARY TAIL OF SPENCE PIERCESTHE AXILLARY FASCIA THROUGH A SMALL FORAMEN
KNOWN FORAMEN OF LANGER AND LIES IN THE AXILLA
EXTENT
VERTICALLYFROM SECOND TO SIXTH RIB IN THE
MID CLAVICULAR LINE
HORIZONTALLYFROM LATERAL BORDER OF STERNUM TO
THE MID AXILLARY LINE ALONG THE FOURTH RIB
RELATIONSTHE BASE OF THE MAMMARY GLAND CALLED
AS MAMMARY BED RESTS UPON THE FOLLOWING STRUCTURES (FROM SUPERFICIAL TO DEEP)
(a) RETROMAMMARY SPACE(b) DEEP FASCIA (PECTORAL FASCIA)(c) MUSCLES- PECTORALIS MAJOR, SERRATUS
ANTERIOR, EXTERNAL OBLIQUE
RETROMAMMARY SPACEA SPACE DEEP TO THE BASE OF THE GLAND,
LIES SUPERFICIAL TO DEEP FASCIA, CONTAINS LOOSE AREOLAR TISSUE, MAKES THE GLAND FREELY MOVABLE.
RETROMAMMARY SPACE
PRESENTING PARTS
(A) NIPPLECONICAL PROJECTION IN THE CENTRE OF THE
ANTERIOR PART OF THE BREAST, LIES IN THE FOURTH INTERCOSTAL SPACE, PINK IN COLOUR, HAS HIGH NERVOUS INNERVATION AND OPENINGS OF 15-20 LACTIFEROUS DUCTS.
(B) AREOLA CIRCULAR PIGMENTED AREA OF SKIN AROUND THE
BASE OF THE NIPPLE, BECOMES DARKER DURING PREGNANCY AND LACTATION, CONTAINS MODIFIED SEBACIOUS GLANDS WHICH BECOMES ENLARGED DURING PREGNANCY AND LACTATION FORMING TUBERCLES OF MONTGOMERRY
STRUCTURE
3 COMPONENTS
(A) FIBROUS TISSUE(B) GLANDULAR TISSUE
(C) AREOLAR TISSUE
(A) FIBROUS TISSUE
SUPPORTS THE ENTIRE GLAND FORMS SEPTA (SUSPENSORY
LIGAMENTS OF COOPER) WHICH ANCHORS THE GLAND TO THE OVERLYING SKIN AND TO THE UNDERLYING DEEP FASCIA (PECTORAL FASCIA) AND DIVIDES THE GLAND INTO 15-20 LOBES
(B) GLANDULAR TISSUE
CONSIST OF 15-20 LOBES LOBES ARE OF TUBULOALVEOLAR TYPE EACH LOBE HAS ONE LACTIFEROUS
DUCT LOBES ARE ARRANGED IN A RADIATING
MANNER ARROUND THE AREOLA THE LACTIFEROUS DUCT DILATES NEAR
ITS OPENING IN THE NIPPLE TO FORM LACTIFEROUS SINUS WHICH ACT AS RESERVOIR OF MILK
DUCTS ARE SURROUNDED BY MYOEPITHELIAL CELLS
STRUCTURE OF THE MAMMARY GLAND
NEUROVASCULAR SUPPLY
ARTERIAL SUPPLYBREAST IS HIGHLY VASCULAR ORGAN.
SUPPLIED BY THE FOLLOWING SETS OF ARTERIES:
1. AXILLARY ARTERY- LATERAL THORACIC BRANCH AND SUPERIOR THORACIC BRANCH
2. INTERNAL THORACIC ARTERY- PERFORATING BRANCH
3. POSTERIOR INTERCOSTAL ARTERY (2ND , 3RD, 4TH )- LATERAL BRANCH.
VENOUS DRAINAGE
VEINS FORM AN ANASTOMOTIC VENOUS CIRCULAR PLEXUS ARROUND THE MAMMARY GLAND KNOWN AS CIRCULAR VENOSUS.
VEINS FROM THIS PLEXUS ENDS IN AXILLARY, INTERNAL THORACIC AND POSTERIOR INTERCOSTAL VEINS.
NERVE SUPPLY
INTERCOSTAL NERVES (4TH- 6TH )- ANTERIOR AND LATERAL CUTANEOUS BRANCHES.
LYMPHATIC DRAINAGE
CLINICAL ANATOMY SKIN INCISIONS FOR BREAST SURGERIES GIVEN
ALONG THE SKIN CREASES AND IN A RADIAL MANNER.
BREAST IS A COMMON SITE FOR TUMOUR.
TUMOUR IN THE BREAST CAN BENIGN OR MALIGNANT
BENIGN TUMOUR- PAPPILOMA- TREATED BY SURGICAL EXCISION OF THE GROWTH.
MALIGNANT TUMOUR- BREAST CANCER/ CARCINIMA
BREAST CANCER TREATED BY REMOVAL OF THE AFFECTED (ONE OR BOTH) BREAST- SURGICAL PROCEDURE KNOWN AS RADICAL MASTECTOMY
DIAGNOSIS OF BREAST CANCER DONE BY EXAMINATION OF THE AFFECTED BREAST LUMP
CLINICAL ANATOMY (CONT.)
BREAST CANCER- SIGNS AND SYMPYOMS:1. A HARD NON-MOVABLE BREAST WITH A SOLID PALPABLE
LUMP
2. RETRACTION OF THE OVERLYING SKIN DUE TO INFILTERATION OF CANCER CELLS ALONG THE SUSPENSORY LIGAMENTS OF COOPER
3. RETRACTION AND FLATTENING OF THE NIPPLE DUE TO AFFECTION OF THE LACTIFEROUS DUCTS
4. SKIN ARROUND THE BREAST- PEAU D ORANGE DUE TO RETRACTION OF THE HAIR FOLLICLES AND OEDEMATOUS SKIN
5. DIAGNOSIS CAN BE CONFIRMED BY FNAC (FINE NEEDLE ASPIRATION CYTOLOGY), MAMMOGRAPHY AND USG (ULTRASONOGRPHY)
KRUKENBURG TUMOUR
QUESTIONS LONG QUESTION
DESCRIBE THE MAMMARY GLAND
OR
DESCRIBE THE MAMMARY GLAND (BREAST) UNDER THE FOLLOWING HEADINGS-(a) location and extent (b) important relations (c) structure (d) blood supply (e) lymphatic drainage (f) applied anatomy.
SHORT NOTES(1) MAMMARY BED
(2) LYMPHATIC DRAINAGE OF THE MAMMARY GLAND
(3) STRUCTURE OF MAMMARY GLAND
SHORT ANSWERS(4) RETROMAMMARY SPACE
(5) TAIL OF SPENCE
(6) FORAMEN OF LANGER
(7) LIGAMENT OF COOPER