PHSL 1010 Final Exam Questions With
Correct Answers
What |is |the |role |of |sex |chromosomes |in |sex |determination?
They |direct |development |of |internal |and |external |sex |organs
What |are |the |examples |bipotential |reproductive |structures |of |the |early |embryo?
Embryonic |tissues, |bipotential |gonad, |wolffish |ducts, |mullerian |ducts, |genital |tubercle, |urethral
|folds, |urethral |groove, |and |labioscrotal |swellings
What |are |Wolffian |ducts?
Embryonic |structures |that |develop |into |male |reproductive |structures
What |is |the |first |step |of |male |embryonic |development?
Sex-determining |region |of |Y |chromosome |in |embryonic |germ |cells |produces |testis-determining
|SRY |protein
What |is |the |second |step |of |male |embryonic |development?
Testis-determing |SRY |protein |initiates |production |of |proteins |that |cause |gonad |medulla |to |
differentiate |into |a |testis
,What |do |interstitial |and |Sertoli |cells |secrete?
Interstitial |and |Sertoli |cells |which |respectively |secrete |testosterone |and |Anti-mullerian |
hormone
What |does |testosterone |control?
It |controls |the |development |of |wolffish |ducts |into |accessory |structures |and |male |external |
genitilia |(via |DHT)
What |does |anti-mullerian |hormone |cause?
It |causes |the |regression |of |Müllerian |duct
What |is |the |first |step |of |female |embryonic |development?
The |cortex |of |the |bipotential |gonad |develops |into |ovarian |tissue
What |is |the |second |step |of |female |embryonic |development?
Wolffian |duct |degenerates
What |is |the |third |step |of |female |embryonic |development?
Müllerian |duct |becomes |Fallopian |tube, |uterus, |and |upper |part |of |the |vagina
What |is |the |male |pattern |of |gametogenesis?
, Spermatogonium |through |mitosis |into |spermatogonia. |Meiosis |begins |and |primary |
spermatocyte |is |produced. |First |meiotic |division |produces |secondary |spermatocytes. |Second |
meiotic |division |produces |spermatid
What |is |the |female |pattern |of |gametogenesis?
Oogonium |through |mitosis |into |spermatogonia. |Meiosis |begins |and |primary |oocyte |is |
produced. |First |meiotic |division |produces |secondary |oocytes. |Second |meiotic |division |yields |
egg
Diagram |the |common |hormonal |control |and |feedback |pathways |for |reproductive |function |(1st |
step)
In |the |CNS |internal |and |environmental |stimuli |produces |kisspeptin |in |the |hypothalamus.
Diagram |the |common |hormonal |control |and |feedback |pathways |for |reproductive |function |
(2nd |step)
Kisspeptin |in |the |hypothalamus |produces |GnRH.
Diagram |the |common |hormonal |control |and |feedback |pathways |for |reproductive |function |(3rd
|step)
In |the |anterior |pituitary |GnRh |controls |secretion |of |FSH |and |LH.
What |does |LH |act |on?
It |acts |on |endocrine |cells |stimulating |the |production |of |peptide |and |steroid |sex |hormones
Correct Answers
What |is |the |role |of |sex |chromosomes |in |sex |determination?
They |direct |development |of |internal |and |external |sex |organs
What |are |the |examples |bipotential |reproductive |structures |of |the |early |embryo?
Embryonic |tissues, |bipotential |gonad, |wolffish |ducts, |mullerian |ducts, |genital |tubercle, |urethral
|folds, |urethral |groove, |and |labioscrotal |swellings
What |are |Wolffian |ducts?
Embryonic |structures |that |develop |into |male |reproductive |structures
What |is |the |first |step |of |male |embryonic |development?
Sex-determining |region |of |Y |chromosome |in |embryonic |germ |cells |produces |testis-determining
|SRY |protein
What |is |the |second |step |of |male |embryonic |development?
Testis-determing |SRY |protein |initiates |production |of |proteins |that |cause |gonad |medulla |to |
differentiate |into |a |testis
,What |do |interstitial |and |Sertoli |cells |secrete?
Interstitial |and |Sertoli |cells |which |respectively |secrete |testosterone |and |Anti-mullerian |
hormone
What |does |testosterone |control?
It |controls |the |development |of |wolffish |ducts |into |accessory |structures |and |male |external |
genitilia |(via |DHT)
What |does |anti-mullerian |hormone |cause?
It |causes |the |regression |of |Müllerian |duct
What |is |the |first |step |of |female |embryonic |development?
The |cortex |of |the |bipotential |gonad |develops |into |ovarian |tissue
What |is |the |second |step |of |female |embryonic |development?
Wolffian |duct |degenerates
What |is |the |third |step |of |female |embryonic |development?
Müllerian |duct |becomes |Fallopian |tube, |uterus, |and |upper |part |of |the |vagina
What |is |the |male |pattern |of |gametogenesis?
, Spermatogonium |through |mitosis |into |spermatogonia. |Meiosis |begins |and |primary |
spermatocyte |is |produced. |First |meiotic |division |produces |secondary |spermatocytes. |Second |
meiotic |division |produces |spermatid
What |is |the |female |pattern |of |gametogenesis?
Oogonium |through |mitosis |into |spermatogonia. |Meiosis |begins |and |primary |oocyte |is |
produced. |First |meiotic |division |produces |secondary |oocytes. |Second |meiotic |division |yields |
egg
Diagram |the |common |hormonal |control |and |feedback |pathways |for |reproductive |function |(1st |
step)
In |the |CNS |internal |and |environmental |stimuli |produces |kisspeptin |in |the |hypothalamus.
Diagram |the |common |hormonal |control |and |feedback |pathways |for |reproductive |function |
(2nd |step)
Kisspeptin |in |the |hypothalamus |produces |GnRH.
Diagram |the |common |hormonal |control |and |feedback |pathways |for |reproductive |function |(3rd
|step)
In |the |anterior |pituitary |GnRh |controls |secretion |of |FSH |and |LH.
What |does |LH |act |on?
It |acts |on |endocrine |cells |stimulating |the |production |of |peptide |and |steroid |sex |hormones
