Power point: Parts of the Egg Labeling the diagram

PA Academic Standards•3.1.3.C2•3.1.5A5•3.1.3A3•3.1.BA4

Parts of the Egg

• OBJECTIVE:• SWBAT: identify and label the parts of the

egg.• SWBAT: summarize the function of each egg

part for the developing embryo.

shellouter shell membraneinner shell membrane

air cell

albumen

chalazae

yolk

blastodisc = infertilewhite

germinal spot

blastoderm = fertiletan, 4 x’s larger

+ f = food source

Germinal Spot

Blastodisc: InfertileColor: whiteSize: tiny, circular

Blastoderm: FertileColor: tan, clear ringSize: 4 x’s larger

First food source for the growing embryo: 1: The first food source is the _________. The embryo absorbs

______________ from the shell to help build strong __________.

shellcalcium bones

Three Sources of Nutrients

2: The _____________is a food source for the embryo. There are two layers of albumen; _____________ and ______.

The albumen provides __________and ___________.

albumenthick thin

protein water

Second food source for the growing embryo:

Three Sources of Nutrients

Third food source for the growing embryo:3: The main source of food is the ________. The yolk provides the embryo with __________,_________, and _________.

vitamins minerals fats

Three Sources of Nutrients

Yolk

By day 21, the egg shell _______________ in strength.

The embryo is absorbing the _____________ from the shell for food.

This process will help the embryo to get out of the shell once it has developed into a chick. The shell is weak or fragile.

During the 21 days, the egg ______________________ grow in size. does or does not

decreases

calcium

does not

4The embryo

resembles a spider insize and shape.

shell embryo yolk

albumen air cell

4

• White embryology notebook:• Page 3: Read• Page 4: Complete –use word bank

only• Page 5: Read and complete all

activities• Page 13: Draw, label, and color your

observation of the embryo on Day 4.

Homework