Epiblast - Samenvattingen, Notities en Examens
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Anatomy & Embryology 100 Concepts || with 100% Correct Answers.
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Where does fertilization occur? correct answers ampulla of the uterine tube 
 
What is a morula? What day is it formed? correct answers The zygote undergoes rapid mitotic division to create a morula on day 4. 
 
What is a blastocyst? What day is it formed? correct answers A blastocyst is formed on day 5 and consists of an embryoblast (inner cell mass) and trophoblast (outer cell mass). 
 
When does implantation occur? correct answers 6 days after fertilization (about 1 week). 
 
Where does the b...
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NERVOUS SYSTEM AND SPECIAL SENSES NOTES UPDATED
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EMBRYONIC DEVELOPMENT OF THE NERVOUS SYSTEM 
 General Embryonic Development is Described as Either: 
 Trimesters (3x 3-Month Periods): 
o First: - Foundations of Major Organs 
o Second: - Development of Organs 
o Third: - Rapid Growth & Fully Functional Organs. 
 OR... Anatomical Stages: **(These are more relevant) 
o Pre-Embryonic Period: 0-2 Weeks 
 Fertilisation 
 Blastocyst Formation & Implantation 
 Gastrulation 
o Embryonic Period: 3-8 Weeks 
 Development & Differentia...
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Embryology Practice Questions with Answers
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1. The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the: 
 
A. capacitor 
B. head 
C. corona 
D. acrosome 
E. cumulus 
D. is correct. 
The acrosome is the part of the sperm containing proteolytic enzymes to digest the zona pellucida. It is exposed by the process of capacitation. Then, under the influence of substances released by corona radiata cells, it releases its proteolytic enzymes and penetrates the oocyte. 
 
 
 
2. The ovulated mammalian oocyte is arre...
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Embryology Practice Questions with Answers
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Embryology Practice Questions with Answers 
 
1. The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the: 
 
A. capacitor 
B. head 
C. corona 
D. acrosome 
E. cumulus - D. is correct. 
The acrosome is the part of the sperm containing proteolytic enzymes to digest the zona pellucida. It is exposed by the process of capacitation. Then, under the influence of substances released by corona radiata cells, it releases its proteolytic enzymes and penetrates the oocyte....
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Embryology Exam | Actual Questions with Answers| updated 2023/24
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Embryology Exam | Actual Questions with Answers| updated 2023/24 
 
1. The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the: 
 
A. capacitor 
B. head 
C. corona 
D. acrosome 
E. cumulus - D. is correct. 
The acrosome is the part of the sperm containing proteolytic enzymes to digest the zona pellucida. It is exposed by the process of capacitation. Then, under the influence of substances released by corona radiata cells, it releases its proteolytic enzymes a...
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CMMB 403 Final Exam with complete solution
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CMMB 403 Final Exam with complete 
solution 
does the fish organizer and the Nieuwkoop centre have similar functions as their amphibian 
counterparts? - answeryes they do! 
at what stage is the xenopus and zebrafish niewkoop centre form? - answerat the late blastula 
stage (near the end of cleavage) 
at what stage does the Xenopus and the Zebrafish form it's organizer? - answerat the gastrula 
stage 
what is the fish organizer also called? - answerthe embryonic shield 
Where is the fish Nieuwko...
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BIOL 1410 Lab Exam Questions And Answers With Verified Solutions
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Morula - Answer--Solid ball of 16-32 cells 
Early Blastocyst - Answer--Blastocyst Cavity 
-Trophoblast 
-Inner cell mass 
9-12 Day Blastocyst - Answer--Amnion 
-Amnion Cavity 
-Chorion 
-Embryonic Disk 
-Epiblast 
-Hypoblast 
20 Day Embryo - Answer--Amnion 
-Amnionic Cavity 
-Chorion 
-Chorionic Villi 
-Embryo 
-Umbilical chord 
-Yolk sac 
Embryonic Membranes - Answer--Amnion 
-Amnionic Cavity 
-Chorion 
-Chorionic Villi 
-Yolk Sac1. Chorionic Villi 
2. Yolk sac 
3. Umbilical Cord 
4. Amnionic C...
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BIO 4400 FINAL EXAM, CELL FATE AND SPECIFICATION, EXAM 2: NEURULATION, EXAM 2: NEURONS, EXAM 2 - NEURAL CREST CELLS, EXAM 2: SENSORY PLACODES AND ORGANS, CELL-CELL INTERACTIONS AND SIGNALING & ANSWERS (VERIFIED ANSWERS) | GRADED+ | LATEST DONE
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Ectoderm doesn't move through the __________ or __________ 
 ANSWER: 1) blastopore (frogs and fishes) 
or 
2) primitive streak (birds and humans) 
Sensory organs all begin in the head as... 
 ANSWER: placode 
- thickenings of surface ectoderm 
what are 4 types of cell interactions? 
 ANSWER: 1) Internal/mechanical 
2) Juxtacrine signaling 
3) Paracrine signaling 
4) Endocrine signaling 
Note: these are arranged in order of closest interaction to longest distance interaction 
The 6 word key to ...
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Craniofacial Biology-Embryology Exam with Questions and Answers
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Craniofacial Biology-Embryology Exam with Questions and Answers 
 
Timeline of human development ANSWER Embryonic period (first 8 weeks) + Fetal period (everything afterwards) 
 
First trimester = 1 - 12 week 
Second trimester = 12 - 25 week 
Third trimester = 25 - 38 week 
 
Fertilization ANSWER The fusion of haploid gametes (oocyte + sperm) to result in formation of diploid embryo 
--> gametes function to transmit genetic info 
--> gametes derived from primordial germ cells 
 
Fertili...
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embryology quiz with verified solutions already graded a+
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Embryology 
study of prenatal development 
 
 
 
Prenatal development consists of three distinct periods 
the pre-implantation period, the embryonic period, and the fetal period 
 
 
 
 
What periods make up the first trimester of pregnanacy 
the pre-implantaiton period and the embryonic period 
 
 
 
What period comprises the last two trimesters 
the fetal period 
 
 
 
It is important for dental professionals to understand what in prenatal development 
to understand the major events of prenata...
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