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CC: A fertile egg has a ________?
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CC: An inifertile egg has a _________?
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Embryology

QuestionAnswer
CC: A fertile egg has a ________? Blastoderm
CC: An inifertile egg has a _________? Blastodisc
DO: How many sequences of genomes are there for chickens more than 20,000
DO: Which comes first the blastoderm or the blastodisc the blastodisc
DO: When does the alloantois form at 4-6 days of incubation
DO: What is the chorioalloantoic membrane the membrane after the alloantois that is attached to the inside of the shell and crisscrossed with blood vessels
DO: What are the 3 functions of the chorioalloantoic membrane exchange oxygen and carbon dioxide between the embryo and the outside of the shell, collect solid waste, and remove calcium from the shell so the embryo can use it to make bones
DO: What process makes the shell thinner the use of calcium from the shell to make bones
MM:In about how long does an ovum develop to the size of a yolk? a week
CC: How long does the blood vessels coming from the embryo join with those coming from the area opaca? 48 hours
EA: How many stages are in the development of the embryo? 45 stages
EA: What is gastrulation? When the cells that make a triangular wedge move inward.
CC: how long until the embryo takes to use up all the yolk? 19
RL; At fertilization how many features does the cell have? One
RL: What do the cells form at stage 4 Primitive
RL: Do surrounding cells influence what not committed cells become? Yes
RL: Once a cell has been committed can it be influenced by other tissue surrounding it? No
CC: Which membrane will eventually extend around and lie next to the shell? The Chorion
RL: How many vertebrae are in a newly hatched chick? More than 40
MM:How does the ovum develop to the size of a yolk? by collecting lipid particles that were made in the hen's liver from the blood.
MM: When the yolk is the correct size , it is released from the ____ into the hen's ________? Ovary , abdomen
MM: What catches the yolk which then starts its journey through the oviduct to add the albumen and shell? infundibulum
MM: What contains the genetic information that is supplied by the female ? the blastodisc
MM: The yolk particles contain _____ as the major energy source? fat
MM: The embryo's head should be tucked under ____ and located toward the _______?? the right wing , round end of the egg
RL: Between what days do the Somites move to create leg buds? 6-8
RL: What will a Dermatome somite form? Skin
RL: What will a Myotome somite form? Muscle
RL: What will a Sclerotome somite form? Skeletal Structures
MM: What is it called when the embryo is not oriented correctly? Malposition
MM:What is malformation? it is when the embryo is not formed properly
MM: In commercial poultry, the combination of malpositions and malformations decreases the overall hatchability by about how much? 5%
CC: Which membrane appears last? Allantois
CC:Which membrane appears as a sac outside of the embrane? allantois
CC: Which two membranes fuse together to form the chorioallantoic membrane? The Chorion and The Allantois
CC: What membrane is first visible on the inside of the shell? chorioallantoic
CC: Where is the Chorioallantoic? Next to the shell
CC: What membrane is first visible on the inside of the shell? chorioallantoic
CC: What does the chorioallantoic membrane do? Exchange oxygen and CO2 between the outside of the shell, resivoir to collect solid wastes, remove calcium
CC: When does cell division begin? Fertilization
CC: What part of the blastoderm does the embryo develop? Area Pellucida
CC: Cell division starts from the _____ and moves to the ______. Posterior, Anterior
CC: What is Gastrulation? Where the cells on the edge begin to move towards the center
DO: How can toxic compounds enter the egg through the hens feed or the environment around the egg
DO: What could happen if toxic compounds enter the egg the developing embryo can die or be malformed
DO: What helps chicks get out of the egg an egg tooth that they lose soon after hatching
CC: Cells form in what 3 layers? Ectoderm, Mesoderm, Endoderm
CC: The Ectoderm is located where? Outside
CC: The Mesoderm is located where? Middle
CC: The Endoderm is located where? Inner
Created by: michelle.knox
 

 



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