PLACENTA STUDY GUIDE

PLACENTA STUDY GUIDE - PLACENTA STUDY GUIDE 1. Functions of...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PLACENTA STUDY GUIDE 1. Functions of the placenta: a. Supply nutrients b. Remove waste products c. Physical protection d. Microbial protection e. Immunological protection f. Hormone protection 2. Stages of development from fertilization through implantation a. Early embryonic development i. 1 cell (zygote) into 2 cells into 4 cells into 8 cells into a morula into a blastocyst b. morula: 16 cell stage, solid ball of cells c. Blastocyst, hollow ball of cells i. Implantation at 7-11 days after fertilization ii. Parts: 1. inner cell mass that gives rise to fetus and most layers of the placenta 2. trophectoderm that gives rise to the outer layer of the placenta 3. Implantation occurs in the uterus 7 to 11 days after fertilization 4. DRAW A BLASTOCYST 5. Placental membranes: a. Amnion-innermost placental membranes i. Fluid filled with amnionic fluid ii. Provides physical protection b. Allantois-middle membrane i. Fluid filled membrane that is the “water bag” that breaks when labor begins
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

PLACENTA STUDY GUIDE - PLACENTA STUDY GUIDE 1. Functions of...

This preview shows document pages 1 - 2. Sign up to view the full document.

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