Embryology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | 1. CNS, lower motor neurons, preganglionic neurons
2. sensory and postganglionic neurons
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| show | week 3
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| show | induces the overlying ectoderm to form the neural plate (neural plate then gives rise to the neural tube and neural crest cells)
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| show | sulcus limitans
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| Neural tissue of the 1. telencephalon 2. diencephalon 3. mesencephalon 4. metencephalon 5. myelencephalon | show 🗑
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| show | 1. lateral
2. third ventricle
3. cerebral aqueduct
4. fourth ventricle
5. central canal
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| show | 1. anencephaly
2. spina bifida
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| The right ventricle of the heart is formed primarily from which embryonic structure? | show 🗑
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| show | 4th week
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| What week of development does the cardiovascular system start to develop? | show 🗑
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| Dextrocardia | show 🗑
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| show | condition where all organs are mirror image of normal; usually asymptomatic (related to Kartagener's syndrome)
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| show | endocardial cushions
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| show | aorticopulmonary septum (neural crest cells form)
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| show | 1. Ligamentum teres
2. Ligamentum venosus
3. ligamentum arteriosum
4. medial umbulical ligaments
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| What are the malformation of the tetrology of fallot? | show 🗑
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| show | 1. bottom
2. middle
3. top
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| show | 1. right vitelline
2. right cardinal
3. left horn of the sinus venosus
4. anterior truncus arteriosus then 4th aortic arch
5. posterior truncus arteriosus then 6th aortic arch
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| show | pulmonary because of hypoxic vasoconstriction which increases resistance and thus pressure
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| What forms to separate the trachea from the esophagus? | show 🗑
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| show | 4 and 6
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| What is the blood supply to the: 1. Foregut 2. Midgut 3. Hindgut | show 🗑
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| show | 1. duodenum
2. tail and body
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| 1. Ventral bud of the pancreas comes from which structure? 2. Which portion of the pancreas does it develop into? | show 🗑
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| 1. Accessory pancreatic duct is made from which pancreatic bud? 2. Main pancreatic duct is made form which pancreatic bud? | show 🗑
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| show | bile duct
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| 1. In what week of development do the intestines begin to herniate? 2. Which week do they return? | show 🗑
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| What is the vitelline duct? | show 🗑
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| What two hormones are secreted by the fetal testis that contribute to male differentiation? Which cells of the testis secrete them? | show 🗑
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| Which hormone is responsible for: 1. Male internal genitalia development 2. Male external genitalia development | show 🗑
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| show | migrate from yolk sac up the hindgut and into the genital ridge
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| Determine which layer of the testes joins with the following structures 1. external oblique 2. internal oblique 3. transverse abdominis 4. transversalis fascia 5. parietal peritoneum | show 🗑
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| What do the structures develop into in a male: 1. genital tubercle 2. urogenital folds 3. labioscrotal swellings | show 🗑
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| show | 1. clitoris, glans clitoris
2. labia minora
3. labia majora
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| show | 1. trophoblast -- placenta
2. embryoblast -- embryo
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| show | cytotrophoblast and syncitiotrophoblast
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| show | 1. ectoderm and mesoderm
2. endoderm
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| What is the process of estrogen production by the fetoplacental unit (starting with cholesterol)? | show 🗑
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| Paramesonephric duct develops into | show 🗑
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| 1. At which fetal stage does implantation occur? 2. How many cells make up this stage? | show 🗑
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| How do the following teratogens effect the fetus? 1. DES 2. folate antagonists 3. lithium | show 🗑
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| show | 1. both have 2 amniotic sacs
2. dizygotic have 2 chorion while monozygotic share a chorion
3. both have 2 placentas
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| 1. inner layer of the chorionic villi that makes cells 2. outer layer of the chorionic villi that secrets βhCG | show 🗑
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| Duct between the bladder and yolk sac | show 🗑
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| show | 1. yolk sac
2. liver
3. spleen
4. bone marrow
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| Which fetal shunt bypasses hepatic circulation. | show 🗑
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| Remnant of the umbilical vein | show 🗑
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| Remnant of the ductus arteriosus | show 🗑
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| show | Chiari II
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| show | Dandy-Walker
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| What do the following aortic arch derivatives form into: 1. 3rd 2. 4th 3. 6th | show 🗑
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| Which germ layer makes up: 1. brachial cleft 2. brachial arch 3. brachial pouch | show 🗑
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| show | 1. muscles of mastication; trigeminal
2. muscles of facial expression; facial nerve
3. stylo-pharyngeus; glosso-pharyngeal nerve
4. pharynx muscles, vagus
6. larynx muscles, vagus
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| show | 1. 3rd pouch develops into the inferior parathyroid glands
2. 4th pouch develops into the superior parathyroids
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| show | 3rd
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| remnant of the thyroglossal duct | show 🗑
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| show | 1. cleft lip
2. cleft palate
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| What structures comprise the: 1. foregut 2. midgut 3. hindgut | show 🗑
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| Midgut rotates around which artery on its return to the abdominal cavity. | show 🗑
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| Pancreas divisum | show 🗑
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| show | dorsal pancreatic bud
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| Which organ arises from mesentery but is supplied by a foregut artery (celiac) | show 🗑
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| 1. first stage of kidney development that degenerates 2. stage of kidney that contributes to the male genital system 3. permanent stage of kidney development | show 🗑
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| show | 1. ureteric bud
2. metanephric mesenchym
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| Most common site of obstruction leading to hydronephrosis in fetus | show 🗑
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| Horshoe kidneys get trapped under which artery? | show 🗑
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| show | incomplete fusion of the paramesonephric ducts
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| pulls testes down to the scrotum | show 🗑
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| show | 1. hypospadias
2. epispadias
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Created by:
amichael87
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