2011 Lab 8 - Genital - Quiz: Difference between revisions
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{Sex determination occurs initially through the SRY transcription factor acting on: | {Sex determination occurs initially through the SRY transcription factor acting on: | ||
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||The support cells in the genital ridge, forming the testes, express SRY and this leads to a cascade of signaling differentiating these cells into Sertoli cells, also called sustentacular (structural support) cells of Sertoli. [[P#primordial germ cell|Primordial germ cells]] are not involved in this initial sex determination step. The anterior pituitary participates in later hormonal events. Ovary support cells (granulosa cells) differentiate in the absence of SRY. Sesonephric duct cells, while present early in genital ridge development, are not the initiators of this process but later effected by gonad differentiation. | ||The support cells in the genital ridge, forming the testes, express SRY and this leads to a cascade of signaling differentiating these cells into Sertoli cells, also called sustentacular (structural support) cells of Sertoli. [[P#primordial germ cell|Primordial germ cells]] are not involved in this initial sex determination step. The anterior pituitary participates in later hormonal events. Ovary support cells (granulosa cells) differentiate in the absence of SRY. Sesonephric duct cells, while present early in genital ridge development, are not the initiators of this process but later effected by gonad differentiation. | ||
{The lower end of the mesonephric duct branches to form the: | {The lower end of the mesonephric duct branches to form the: | ||
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- none of the above | - none of the above | ||
||The [[BGDB_Sexual_Differentiation_-_Early_Embryo#Kidney_and_Mesonephric_Duct|ureteric bud]] is a single epithelial branch forming from each mesonephric duct, that extends laterally into intermediate mesoderm as part of early metanephric formation. Mesonephric duct does not form uterus or urethra. As far as I know I made up the term "gonadal bud". | ||The [[BGDB_Sexual_Differentiation_-_Early_Embryo#Kidney_and_Mesonephric_Duct|ureteric bud]] is a single epithelial branch forming from each mesonephric duct, that extends laterally into intermediate mesoderm as part of early metanephric formation. Mesonephric duct does not form uterus or urethra. As far as I know I made up the term "gonadal bud". | ||
{The sequential development of the renal structures within intermediate mesoderm can best be described as: | {The sequential development of the renal structures within intermediate mesoderm can best be described as: | ||
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||The rostro-caudal paired strips of intermediate mesoderm form in a downward sequence: pronephros (in the neck region), mesonephros (along the length of the trunk) and metanephros (at the level of the hindlimbs). The metanephros being the developing adult kidney. | ||The rostro-caudal paired strips of intermediate mesoderm form in a downward sequence: pronephros (in the neck region), mesonephros (along the length of the trunk) and metanephros (at the level of the hindlimbs). The metanephros being the developing adult kidney. | ||
{The sequential development of the genital system can best be described as: | {The sequential development of the genital system can best be described as: | ||
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||Differentiation of the initially indifferent gonad is required before internal tract and then external tract development. Both the latter require gonad development and will be abnormal without this first step. Mesonephric duct is present beside the early genital ridge, but does not induce its differentiation. Paramesonephric duct forms after gonad determnation. | ||Differentiation of the initially indifferent gonad is required before internal tract and then external tract development. Both the latter require gonad development and will be abnormal without this first step. Mesonephric duct is present beside the early genital ridge, but does not induce its differentiation. Paramesonephric duct forms after gonad determnation. | ||
{The allantois, cloaca, hindgut and yolk sac are all lined with endoderm | {The allantois, cloaca, hindgut and yolk sac are all lined with endoderm | ||
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- false | - false | ||
|| During week 3 gastrulation generates the endoderm layer that forms an epithelial layer that with later embryonic disc folding lines all of the above structures. | || During week 3 gastrulation generates the endoderm layer that forms an epithelial layer that with later embryonic disc folding lines all of the above structures. | ||
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- ductus deferens and mesonephric ducts | - ductus deferens and mesonephric ducts | ||
||'''Thecal cells''' (female) and '''interstitial cells''' (male) both form the sex hormone secreting cell population in the gonads. Leydig cells and interstitial cells are 2 names for the same cell in the testis. Primordial germ cells exist in both sexes and do form oocytes, but this is not what the question asked. The ductus deferens is the male internal genital tract formed from the mesonephric ducts. | ||'''Thecal cells''' (female) and '''interstitial cells''' (male) both form the sex hormone secreting cell population in the gonads. Leydig cells and interstitial cells are 2 names for the same cell in the testis. Primordial germ cells exist in both sexes and do form oocytes, but this is not what the question asked. The ductus deferens is the male internal genital tract formed from the mesonephric ducts. | ||
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||Mullerian and paramesonephric duct are the same thing and the embryonic contributors to the female uterus and vagina development. | ||Mullerian and paramesonephric duct are the same thing and the embryonic contributors to the female uterus and vagina development. | ||
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||The adrenals, kidneys and gonads are initially closely related. Both the adrenals and kidneys are described as moving relatively as ascending, while the gonads (both ovary and testis) move away in relative descent. | ||The adrenals, kidneys and gonads are initially closely related. Both the adrenals and kidneys are described as moving relatively as ascending, while the gonads (both ovary and testis) move away in relative descent. | ||
{The genital tubercle and inner genital folds form the same adult structures in both sexes. | {The genital tubercle and inner genital folds form the same adult structures in both sexes. | ||
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+ false | + false | ||
|| In the fetus, the genital tubercle and genital folds appear as the same external genital structures in both sexes and differentiate to form different adult structures. | || In the fetus, the genital tubercle and genital folds appear as the same external genital structures in both sexes and differentiate to form different adult structures. | ||
{Select the correct options below describing aspects of gonad development | {Select the correct options below describing aspects of gonad development | ||
Revision as of 09:06, 15 February 2012
| 2011 Lab 8: Introduction | Sex Determination | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Quiz | Online Assessment |
Here are a few simple questions that relate to your urogenital practical, this page is not a part of today's Practical class. You should try in your own time after completing the Practical today. Take the quiz and see what you know, if you get some wrong, try working through through the practical content again.
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| 2011 Lab 8: Introduction | Sex Determination | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Quiz | Online Assessment |
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Cite this page: Hill, M.A. (2024, April 26) Embryology 2011 Lab 8 - Genital - Quiz. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/2011_Lab_8_-_Genital_-_Quiz
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
