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| SH Lymphatic Structure and Organs - Quiz
| | Normal peripheral blood: |
| | * 60 - 80% of lymphocytes are T cells |
| | * 10 - 15% are B cells |
| | * remainder lack both B and T cell markers (null cells). |
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| --[[User:Z8600021|Mark Hill]] 15:10, 15 February 2013 (EST) Histology Quiz under development.
| | T cell subpopulations defined by antigenic markers |
| | | * CD4+ (helper) |
| Here are a few simple questions that relate to your SH 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 [http://vslides.unsw.edu.au/VirtualSlideV2.nsf/id/FA8942 virtual slides], lecture and [[SH Practical - Lymphatic Structure and Organs|practical support]] page.
| | * CD8+ (suppressor) |
| | | * killer (cytotoxic) |
| Some questions have associated images, if the image is to small to see clearly open the image separately in a new tab.
| | * memory cells |
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| ==Take the Quiz==
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| {|
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| | width=400px|<quiz display=shuffle>
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| {Sex determination occurs initially through the SRY transcription factor acting on:
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| |type="()"}
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| - primordial germ cells
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| - anterior pituitary
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| + testes support cells
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| - ovary support cells
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| - mesonephric duct cells
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| ||Answer
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| {The lower end of the mesonephric duct branches to form the:
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| |type="()"}
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| + ureteric bud
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| - uterus bud
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| - urethral bud
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| - gonadal bud
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| - none of the above
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| ||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".
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| | |
| {The sequential development of the renal structures within intermediate mesoderm can best be described as:
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| |type="()"}
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| + pronephros, mesonephros, metanephros
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| - pronephros, metanephros, mesonephros
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| - mesonephric duct, metanephros, mesonephros
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| - mesonephric duct, paramesonephric duct, metanephros
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| - uteric bud, ureter, urinary bladder
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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.
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| | |
| {The sequential development of the genital system can best be described as:
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| |type="()"}
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| - internal and external genital tract dependent upon primordial germ cell hormone secretion
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| + gonadal differentiation and hormone secretion determining internal then external tract development
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| - mesonephric duct hormone secretion forming genital ridge then internal and external tract development
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| - internal tract determining gonadal then hormone secretion for external tract development
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| - paramesonephric duct forming genital ridge then hormone secretion for internal and external tract development
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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.
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| | |
| {The allantois, cloaca, hindgut and yolk sac are all lined with endoderm
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| |type="()"}
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| + true
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| - false
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| || 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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| {The cells in the adult male and female gonad forming from equivalent primordial cells in each sex are:
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| |type="()"}
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| - Sertoli cells and thecal cells
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| - Leydig cells and interstitial cells
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| - primordial germ cells and oocytes
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| + thecal cells and interstitial cells | |
| - ductus deferens and mesonephric ducts
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| ||'''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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| {Select the correct options below for the embryonic contribution to the female uterus and vagina
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| |type="[]"}
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| - Wolffian duct
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| - Utereric duct
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| + Mullerian duct | |
| + paramesonephric duct
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| - urogenital sinus
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| ||Mullerian and paramesonephric duct are the same thing and the embryonic contributors to the female uterus and vagina development.
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| | |
| | |
| {The relative movement of organs with the peritoneal cavity can best be described as:
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| |type="()"}
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| - descent of the adrenal glands and gonads
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| - ascent of the adrenal glands and genital tubercle
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| + ascent of the kidneys and descent of the gonads
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| - descent of the kidneys and adrenal glands
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| - none of the above
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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.
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| | |
| {The genital tubercle and inner genital folds form the same adult structures in both sexes.
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| |type="()"}
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| - true
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| + false
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| || 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.
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| {Select the correct options below describing aspects of gonad development
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| |type="[]"}
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| - testis cortical and ovary medullary
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| + ovary cortical and testis medullary
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| + prenatal meiosis in the ovary germ cells
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| - prenatal meiosis in the testis germ cells
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| + prenatal mitosis in the ovary germ cells
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| ||Remember the anatomy of the adult gonads, with cortical primordial follicles in the ovary and medullary seminiferous tubules. The primordial germ cells in the testis form diploid spermatogonia that proliferate by mitosis and divide by meiosis postnatally. The primordial germ cells in the ovary form primordial oocytes that proliferate by mitosis and commence meiosis prenatally in the fetal ovary.
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| </quiz>
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| ===Question Images===
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| [[File:SH Practical - Lymphatic Structure and Organs.jpg|200px]]
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| '''Question 1 image'''
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| |}
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| [[Category:Quiz]]
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