ANAT2341 Student 2015 Quiz Questions

1 Introduction
2 Gamatogenesis
- 2.1 Fertilization Quiz
- 2.2 Week 1 and 2 Development
3 Week 1
4 Placenta Development
5 Glossary Links

Introduction

Student designed quiz questions.

Gamatogenesis

1 Which is the most correct statement about male Gamatogenesis :

	the entire proces is driven by the secretions of the sertoli cells
	it does not occur before puberty
	meiosis is initiated by meitoically dividing stem cells
	it takes a males spermatozoa 38 hours from commencing meiosis until it reaches a mature spermtozoa.
	sperm does does not reach full maturity until fertilization.

2 The most correct sequence of spermatogenesis ( male gamatogenesis ) is:

	spermatozoa, spermatodytes, spermatid, spermatagonia
	sertoli cells, spermatocytes, spermatagonia, spermatozoa
	spermatogonia, spermatocytes, spermatids, spermatozoa
	spermatocytes, spermatids, spermatogonia, spermatozoa

3 Which of the following statements about gamatogenesis are True:

A) Oogenesis enter arrest at the 1st meiotic stage and spermatogenesis does not enter arrest
B) Meiosis is initiated twice in a finite population of cells
C) Spermatogenesis produces 4 gametes/meiosis whereas oogenesis produces 1 gamete/meiosis
D) In Oogenesis gamate differentiation occurs at the diploid phase and spermatogenesis it occurs in the haploid phase.

- neither gamate has reached its full maturity when it leaves the gonad - spermatogenesis can not occur untill puberty and oogenesis is reactivated at puberty due to hormual stimulation from the endocrine system

	none of the above
	A and C
	A,B,D
	A,C,D
	all of the above

Fertilization Quiz

1 Which of the following statements about female and male gametogenesis is incorrect:

	While male meiosis is completed in days or weeks, female meiosis is delayed for months or years.
	Male meiosis produces four gametes, whereas female meiosis produces only two.
	In oogenesis meiosis is initiated once in a finite cell population, while in spermatogenesis meiosis is continuously initiated in a stem cell population.
	Male gamete differentiation occurs after meiosis ends, whereas in oogenesis this occurs earlier during the first meiotic prophase.

2 Where does fertilization usually occur:

	Ovaries
	Upper uterine cavity
	First 1/3 of uterine tube
	Last 1/3 of uterine tube
	Lower uterine cavity

3 The acrosome reaction...:

	Helps spermatozoa to penetrate the zona pellucida
	Initiates ovulation
	Allows spermatozoa movement by stimulating the mitochondria
	Is responsible for ZP2 expression in the zona pellucida
	all of the above

Week 1 and 2 Development

1 Which of the following is not an abnormality that occurs during week 1 and 2 development?

	Tubal pregnancy
	Hydatidiform mole
	Dizygotic Twinning
	Endometriosis
	Tornwaldt’s cysts

2 Which of the following is incorrect regarding a zygote?

	Cleavage of a zygote forms 2 blastomeres
	The zona pellucida remains intact during division
	Cell division is initially synchronous
	Sperm contribute the centriole for mitotic division
	During zygote cleavage, the cell cycle consists of G1, S, G2, M phases.

3 Implantation:

	Leads to the formation of a coagulation plug around day 12
	Always occurs in the uterine wall
	Usually occurs during days 3-4
	Always begins with adplantation where the morula adheres to the uterine epithelium
	Leads to the blastocyst becoming immotile as soon as it adheres to the epithelium

Week 1

1 Which ONE of the following is true with regard to the male reproductive system?

	The midpiece of spermatozoa is responsible for motility
	The male sex hormone, testosterone is produced by spermatozoa
	Only one spermatozoa has to reach the oocyte for fertilisation to occur
	Spermatozoa primarily use their chemotaxic response to oestrogen to locate the oocyte

2 Which statement is INCORRECT with regard to the female menstrual cycle:

	Gonadotropin releasing hormone is only responsible for signalling the release of luteinising hormone (LH)
	The peak of oestrogen occurs during ovulation
	The female body experiences a rise in temperature during the luteal phase and is an indication of menstruation
	Rising levels of progesterone occur in the luteal phase

3 Select the CORRECT statement:

	Fertilisation usually occurs two thirds down the fallopian tube
	Upon entering the vagina, spermatozoa have up to four days to fertilise the oocyte
	Spermatozoa contributes to only 10% of seminal fluid upon ejaculation.
	Capacitation is the inactivation of spermatozoa motility

1 In which layer of the uterus does implantation occur?

	Myometrium
	Perimetrium
	Compact Endometrium
	Spongy Endometrium

2 An amniocentesis is generally done in the 18th – 22nd week of pregnancy?

	False
	True

3 What factors would indicate a villi cell was tertiary and in its third stage of development?

	Week 3 of pregnancy
	The mesenchyme has differentiated into blood vessels and cells forming a network
	Villi cover the whole chorionic surface
	Villi is made up from simple cytotrophoblast cells inside a cord of syncitiotrophoblast cells

Placenta Development

1 Which of these is NOT a part of Tertiary Chorionic Villi formation?

	Mesenchyme differentiating into blood vessels and cells.
	Fusing with placental vessels.
	Extra-embryonic mesoderm grows into the villi.
	All of the above

2 Which of these structures make up part of the maternal surface of the placenta?

	Amniotic membrane.
	Cotyledons
	Chorionic plate.
	Syncytiotrophoblasts

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Glossary Links

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