32 femalefertiliz2007modfinal_nxpowerlite_

32 femalefertiliz2007modfinal_nxpowerlite_ - Female...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
Female Reproduction II and Fertilization ALMOST THERE!!!!!! Dr. Kelly Selman MCTB 11/20/07
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Lobules Lactiferous duct Lactiferous sinus Branched glands that develop from the epidermis and lie within subcutaneous tissue (superficial fascia)
Background image of page 2
Mammary glands have 15-20 lobes. Each lobe has its own Lactiferous duct that opens to the nipple via a sinus. Glands consist of: Lobes Lobules Duct system Intra lobular ducts Inter lobular ducts Lobar ducts ( Lactiferous ducts) 3 Physiological stages: Resting (nonpregnant) Proliferating (pregnancy) Lactating Lobule Lactiferous duct = Lobar duct (drains lobe) Lobe Lobule Lactiferous sinus
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Resting mammary gland Lobule Consists of ducts in a “fibroadipose” tissue Displays minor changes during 28 day cycle
Background image of page 4
Myoepithelial cells Plasma cells Resting glands consist primarily of intralobular ducts (epithelial cells & myoepithelial cells)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Late proliferating gland Interlobular duct Lobule (prolactin and placental lactogen)
Background image of page 6
Plasma cells Myoepithelial cells Hard to distinguish intralobular ducts from alveoli What is function of plasma cells here? Late proliferating gland
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Osmium stained to demonstrate lipid secretions Lactating mammary gland
Background image of page 8
Hormonal regulation PREGNANCY: Corpus luteum & placenta secrete estrogen and progesterone Estrogen : stimulates (lactiferous) duct development Progesterone : stimulates alveoli growth Other hormones from ovary (inhibin, activin), LACTATION: Prolactin (adenohypophysis): stimulates secretion Oxytocin (neurohypophysis): effects myoepithelial cell contraction Other hormones from pituitary & adrenals involved
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Secretion in mammary gland alveolar cells Dimeric IgA made by plasma cells, transcytosed into lumen (passive immunity) Lipids released by Apocrine secretion Oxytocin Prolactin Merocrine secretion: Proteins (casein, a-lactalbumin, antibodies, etc.) Myoepithelial cell Prolactin stimulates milk production Oxytocin induces contraction of myoepithelial cells & milk release
Background image of page 10
Minimal structural changes occur monthly Major changes occur during pregnancy EarlyPregnancy (2) Mid-Pregnancy (1) (3) Nulliparous (4) Lactation (5) After weaning
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Benign breast diseases There are several different types of benign breast diseases that effect the various components of the mammary glands (connective tissue, ducts and acini) Fibrocystic breast disease is the most common non- malignant disease (20-50 yr old females) Fluid filled cysts Fibrosis
Background image of page 12
Breast cancer There are several different types of breast cancers; about 80% arise in the epithelial linings of the lactiferous ducts. Epithelial cells lining the lactiferous ducts have estrogen
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/04/2012 for the course ANT 610C taught by Professor Johnaris during the Spring '10 term at University of Florida.

Page1 / 63

32 femalefertiliz2007modfinal_nxpowerlite_ - Female...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online