2010 BGD Practical 6 - Quiz: Difference between revisions

Here are a few simple questions that relate to your BGD 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 2010 BGD Practical - Implantation to 8 Weeks.

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	lateral to medial:extraembryonic - lateral plate - intermediate - paraxial
	lateral to medial: lateral plate - paraxial - intermediate - axial
	medial to lateral: notochord - somites - intermediate - lateral plate
	medial to lateral: paraxial - axial - intermediate - cardiac

	true
	false

	rostrocaudally
	caudorostrally

	occurs after fertilization
	occurs when meiosis II is completed
	occurs initially when sperm and oocyte membranes fuse
	occurs when cortical granules are released

	the blastocyst forms from the 2 blastomere stage
	the blastocyst has a cavity lined with endoderm
	the blastocyst stage occurs after hatching from the zona pellucida
	the blastocyst has an embryoblast and trophoectoderm layer

	is driven by the trophoblast layer
	occurs following adplantation
	can occur inside and outside the uterine body
	allows endocrine support of the corpus luteum

	amniotic cavity, yolk sac and chorionic cavity
	pericardial cavity, pleural cavity and peritoneal cavity
	blastocoel, somitocoel and lateral plate coelom
	maternal lacunae, uterine gland lumen, uterine body cavity

	gives rise to the trilaminar embryo
	involves cell migration from the epiblast layer
	extends from the primitive node to the buccopharyngeal membrane
	occurs at the region known as the primitive streak
	generates endoderm and then mesoderm layers

	mechanical role in embryonic disc folding and signaling for tissue patterning
	formation of the nucleus pulposis and separating cloacal and buccopharyngeal membranes
	gastrulation and neuralation
	formation of the nucleus pulposis and intervertebral disc

	true
	false

Quizzes

@@ Line 12: / Line 12: @@
 - medial to lateral: paraxial - axial - intermediate - cardiac
-||The [[E#extraembryonic mesoderm|extraembryonic mesoderm]] is outside the embryonic disc. Intermediate mesoderm is outside the paraxial layer. Cardiogenic mesoderm is a region of prechordal splanchnic mesoderm.
+||The [[E#extraembryonic mesoderm|extraembryonic mesoderm]] is outside the embryonic disc. Intermediate mesoderm is outside the paraxial layer. Cardiogenic mesoderm is a region of prechordal splanchnic mesoderm. Note - how I always mispronounce "paraxial" as "para-axial", it's a bad habit of mine, the correct pronunciation is "par" then "axial".
-{The spermatogenic epithelium is stimulated by follicle stimulating hormone (FSH)
+{During embryonic disc folding in week 3 only the ectoderm layer folds ventrally left, right and above and below the notochord.
 |type="()"}
-+ true
+- true
-- false
++ false
-|| Follicle stimulating hormone (FSH) does stimulate the spermatogenic epithelium and luteinizing-hormone (LH) stimulates testosterone production by Leydig cells.
+|| During folding in the third week all three germ cell layers (ectoderm, mesoderm and endoderm) fold together ventrally as described.
-{Gamete differentiation occurs while diploid in
+{Somites form regularly at the level of the body in the direction
 |type="()"}
-+ oocytes
++ rostrocaudally
-- spermatozoa
+- caudorostrally
-||Oocyte differentiation occurs while diploid (in first meiotic prophase), while spermatozoa differentiation occurs while haploid (after meiosis ends) in spermiogenesis.
+||In the direction from head (rostro) toward tail (caudal). This direction of development is seen in many other structures such as: neural tube neuropore closure (cranial then caudal); intermediate mesoderm (early kidney formation) and limb development (upper then lower limb).

2010 BGD Practical 6 - Quiz: Difference between revisions

Revision as of 15:40, 23 May 2010

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