1. What is the significance of the formation of the blastocoel and blastoderm during blastulation? 2. What physical processes initiates and accomplish the formation of the gastrula?
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1. What is the significance of the formation of the blastocoel and blastoderm during blastulation?
2. What physical processes initiates and accomplish the formation of the gastrula?
please answer both questions
Step by step
Solved in 2 steps
- 1 a)Explain the role of cell sorting in the formation of the blastula. b)Name four (4) structures / tissues that form from each of the primary germ layers in the gastrula1. Encloses and protects the embryo and fetus from temperature fluctuations and trauma 2. Will form the umbilical cord and become part of the urinary bladder. 3. Provides nutrients and blood circulation for the first 2 weeks of gestation. 4. Is developed from the trophoblast layer of the blastocyst and forms the fetal portion of the placenta Match the following numbered functions above with the correct structures listed below. Number Structure Chorion Allantois Yolk sac Amnion1. Discuss the formation of cleavage of sea urchin 2. Discuss the formation of gastrulation of sea urchins. Answer question 1 and 2
- Answer the following questions briefly (3-5 sentences only). 1. Why does oxygen consumption increase during gastrulation? 2. What is the purpose of applying tiny particles of carbon to the surface of the embryo? 3. What processes cause the change in the form of the embryo during gastrulation 4. Does the environment play a role in the movement of cells? 5. Why is the nuclei of the early cleavage cells considerably larger than they are in ordinary somatic cells?1. Compare and contrast the embryonic development of the starfish and the sea urchin. 2. Compare and contrast gametogenesis in starfish and sea urchin. 3. What is the significance of the formation of the blastocoel and blastoderm during blastulation? What physical processes initiates and accomplish the formation of the gastrula?40. A 9-month-old boy is brought to the office for a follow-up examination. He has had six episodes of respiratory tract infections and has had frequent constipation since birth. He is unable to sit up or roll over. Laboratory studies show hypoparathyroidism. The most likely cause of these findings is failed development of which of the following embryologic structures? A) First pharyngeal groove B) First pharyngeal pouch C) Second pharyngeal groove D) Second pharyngeal pouch E) Third pharyngeal groove F) Third pharyngeal pouch
- 1. Identify the types of movements during gastrulation. 2. Based on your answer in question 1, discuss the types of movements during gastrulation. Answer question number 1 and 2.Activity 1. Define each of the concepts below. Acrosome Amnion Blastocyst Blastula Chorion Cortical reaction Extraembryonic membranes Gastrulation Holoblastic Isolecithal Meroblastic Morula Placenta Radial cleavage Spiral cleavage Telolecithal Trophoblast Activity 2. Using the concepts from Activity 1, make mini-concept maps (two concepts connected by a relationship) by connecting each concept to at least one other.What is the difference in gastrulation and blastula process?
- asap1. One day after an uncomplicated vaginal delivery at term of a healthy 3465-g (7-lb 10-oz) male newborn, a 32-year-old woman, gravida 4, para 4, has a 12-hour history of episodes of increasingly severe lower abdominal cramps. The cramps usually occur when she breast-feeds her newborn. She has no history of serious illness and takes no medications. Her temperature is 37°C (98.6°F), pulse is 82/min, respirations are 18/min, and blood pressure is 124/72 mm Hg. The uterine fundus is firm and consistent in size with a 22-week gestation. Release of which of the following is the most likely cause of this patient's symptoms? OA) Angiotensin B) Oxytocin C) arathyroid hormone D) Prolactin O) E ReninA 3-month-old male infant has a swelling in the inguinal area that increases when he cries. This finding is most likely caused by abnormal development of which of the following structures? a. genital tubercle b. labioscrotal swellings c. mesonephric ducts d. paramesonephric ducts e. processus vaginalis f. urogenital folds g. urogenital sinus