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FIU - ZOO 3603 - ZOO 3603, embryology - Study Guide

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FIU - ZOO 3603 - ZOO 3603, embryology - Study Guide

School: Florida International University
Department: OTHER
Course: Embryology
Professor: Maria Terreros
Term: Spring 2018
Tags: embryo, embryology, FIU, floridainternationaluniversity, Biology, Bio, biomajor, MCAT Biology, biologymajor, mesoderm, ectoderm, earlydevelopment, HumanDevelopment, Science, syudy, Studyguide, Nursing, and medical
Name: ZOO 3603, embryology
Description: This is a study guide for exam 2
Uploaded: 02/21/2018
This preview shows pages 1 - 3 of a 7 page document. to view the rest of the content
background image Embryology Study Guide     Chapter 6  Embryology  Side note:  
Yellow highlight: is what I felt was important 
Aqua highlight: is what she repeated several times 
Pink:  important information     Ninth Week  •  The baby can be affected by alcohol consumption, smoking, overweight  mothers can cause diabetes in gestation.   •  These different environmental factors can affect the baby.  
•  Mothers that consume alcohol or smoke have much smaller babies.  
  Figure 6-1 page 96.  •  Ultrasound of baby in the first trimester.  
•  Pregnancy is divided into 3 trimesters.  
•  The embryo is 14 cm at nine weeks. 
•  We will see what happens in the first trimester, much more development of  the head. The head occupies half of the total size.    •  The head stops growing in order to let other parts of the body grow. They  develop in 9-12 weeks.    
Figure 6-2 page 96 
•  9 Week fetus. From 9-12 weeks is one of the most important, we see  different structures that develop.   •  For ex: we will see how the head looks, how the face separates.  
•  The eyelids are closed.   
•  We can see these characteristics, we cannot see the difference between 
male and female system (genital organs).   •  We will see the formation of red blood cells.  
•  At the end of the 12 weeks this process makes a spleen.  
•  The spleen is involved in the red blood cells process.  
   
You can see the fetus at 9 weeks in figure 6-2 level of umbilical cord.  
 
Figure 6-3 page 97 
Intestine is not in the umbilical cord. It will have more space so the intestines can 
accommodate in abdomen.  
 
Figure 6-4 
•  At 16 weeks you can differentiate male and female also at 14 weeks. 
•  Formation of upper limbs in relation to lower limbs in 16 weeks.  
background image •  12 weeks you will have period that compromise 9-12 weeks difference  between upper limb and lower limb.   •  Remember also it happens because upper limb develops earlier than lower  limbs (1 to 2 days prior)   
Figure 6-5 page 98 
•  17 weeks you will see main formation of vernix caseosa- greasy material. 
•  Lanugo appear all over the body and vernix caseosa helps.  
•  Lanugo is thin hair forming in body of baby.  
•  See formation of brown fat- first fat that is forming in the fetus.  
•  We have white and brown fat- white has a larger amount.  
•  17 weeks brown fat is formed, white fat forms later on at 30 weeks more or 
less which gives another formation to the baby.   •  Brown fat produces heat for the baby (it regulates the temperature of the  baby).    
Figure 6-6 page 98 
•  21-25 weeks. We start seeing much more growing and much more weight.  •  We start seeing the appearance of the baby is a little pink because of the  presence of the capillaries.     Figure 6-7 page 99  •  26-29 development of the limbs. 24-26 see formation of type two alveolar  cells.   •  28-30 weeks we will have formation of white fat.    
Thirty to 34 weeks- The pupillary reflex- pupil in response to  
35-38 weeks- the nervous system is matured to execute some integrative 
functions 
 
Figure 6-9 Page 100 
•  Healthy newborns    
Postmaturity syndrome: alcohol, drugs, smoking 
 
Procedure to see some disorders and birth defects 
 
Figure 6-13 page 103 
•  Amniocentesis is made from 14 weeks to 16 weeks.    •  This procedure is more safe than other procedures.  
•  It counts chromosomes to see if the baby has a defect, they can determine 
the sex of the baby because they are doing the karyotype and can see the 
sexual chromosome.  
•   If mothers are 38 and older it is recommended to take the test, also for  mothers who have been pregnant in the past and their child had a problem. 
background image •  Amniocentesis the mother has a much more advanced pregnancy.  
•  For example, another kind of study that doctors can do, measure the 
alpha-fetoprotein.   •  It’s an enzyme that is producing the liver of the baby.  
•  Alpha-fetoprotein is high the level of amniotic fluid then this can be 
assumed there's a problem in the central nervous system.    
Figure 6-14 page 103 
•  Presence of chromatin in nucleus of cell can determine sex in the  pregnancy. If its present it is a female, because its at the level of X  chromosome.   •  (A)(B) normal cell that comes from a cell.  
•  Males do not show chromatin in nuclei of cell.  
•  D) fluorescence is made to see the presence of a Y chromosome.   
•  Easy to do to see the sex of the baby.  
•  The sex is in relation with many diseases, very important diseases that are 
x-linked. For that there are many couples who are interested in knowing 
sex of the baby.  
 
 
 
Chapter 7  Placenta and Fetal Membranes  Endometrium that generates the placenta  
 
Figure 7-1  
•  Development of the fetal membranes and placenta.    •  Two placentas. Primary  •  Secondary villi.   •  Amniotic membrane ruptures    Figure 7-4   •  Amnion and smooth chorion fuse  •  We will observe how the  chorionic villi and the inter villi space is formed at  level of trophoblast lactum.     
Figure 7-5 
•  Maternal placenta has a characteristic shape that has cohiladon.  •  Different part of maternal placenta.   •  Decidua basalis is a  functional layer.   •  Spiral arteries  •  Endometrial (spiral) arteries.   •  Decidua parietalis and smear chorion fuse.   •  Branch villi (many) 

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School: Florida International University
Department: OTHER
Course: Embryology
Professor: Maria Terreros
Term: Spring 2018
Tags: embryo, embryology, FIU, floridainternationaluniversity, Biology, Bio, biomajor, MCAT Biology, biologymajor, mesoderm, ectoderm, earlydevelopment, HumanDevelopment, Science, syudy, Studyguide, Nursing, and medical
Name: ZOO 3603, embryology
Description: This is a study guide for exam 2
Uploaded: 02/21/2018
7 Pages 24 Views 19 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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