HLTH201 Lecture Notes - Zona Pellucida, Hypoblast, Epiblast

21 views3 pages

champagnelizard59

22 Jul 2014

School

University of Waterloo

Department

Health Studies

Course

HLTH201

Professor

Heidi Engelhardt

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Figure 11. 20: development of a human embryo from fertilization to implantation. Compaction of the human embryo occurs on day 4 when it is at the 10-cell stage. Hatches from the zona pellucida upon reaching the uterus. During its migration to the uterus, the zona prevents the embryo from prematurely adhering to the oviduct rather than traveling to the uterus. Figure 11. 22: the cleavage of a single mouse embryo in vitro. (a) 2-cell stage. (b) 4-cell stage. (c) early 8-cell stage. (d) compacted 8-cell stage. (e) morula. (f) Figure 11. 23: scanning electron micrographs of (a) uncompacted and (b) compacted 8-cell mouse embryos. Figure 11. 24: implantation of the mammalian blastocyst into the uterus. (a) mouse blastocysts entering the uterus. (b) initial implantation of the blastocyst in a rhesus monkey. Figure 11. 27: tissue formation in the human embryo between days 7 and 11. (a, b) human blastocyst immediately prior to gastrulation.

Related Questions

pleas pleas do all parts

1-Are both the egg and zygote of a sea star the same size?

2-Do the cells of a two-cell sea star embryo differ in size?

3-Does the sea star embryo appear to be growing during cleavage?

4-What structures will the archenteron develop into?

5-What obvious visual change occurs in a frog egg upon fertilization?

6-How is the orientation of the blastocoel in an amphibian blastula different than that of a sea star?

7-What structures will form from the neural fold of the frog embryo?

8-In a chick embryo at gastrulation, what does the primitive streak indicate?

9-What are the segmented units that are visible along the dorsal axis of the 33 hour chick embryo?

10-The basic stages of development are quite similar for a wide range of organisms. How would you explain such consistency?

turquoisecaribou231

Match the descriptor in the left-hand column to the appropriateanatomic, structural component of the female reproductive tractlisted in the right-hand column.

1.	Cervix
2.	Clitoris
3.	Fallopian Tube
4.	Labia
5.	Ovary
6.	Uterus
7.	Vagina

	sheds its lining during menstruation
	contains follicles where germ cells mature
	corpora lutea in this structure serve as the primary source ofprogesterone during the first trimester of pregnancy
	base of the uterus that dilates and effaces during the birthingprocess
	normal site for fertilization in the female reproductivetract
	female homolog of the penis
	site of semen deposition in the female reproductive tract
	a.k.a. oviduct
	female gonad responsible for steroidogenesis and gameteproduction
	portal of entry from/exit to the external environment for thefemale reproductive tract
	site of implantation and embryo/fetal development duringpregnancy
	cells scraped from this region are analyzed forprecancerous/cancerous cells when a pap smear is performed
	contains 3 layers, the endometrium, myometrium and perimetrium,moving from its lumen to its outer surface
	a.k.a. uterine tube
	longitudinal folds on either side of the vaginal and urethralopenings

mauvesnail91

I've been thinking about the development of an embryo from thezygote stage.

How is it that when cytokinesis takes place at that stage, thecells all stick together in a little ball, but later in life, someare not bound to others (red blood cells, sperm cells, etc.)?

In other words, how is it that some cells are stuck together andsome are separated? How does this property develop?

HLTH201 Lecture Notes - Zona Pellucida, Hypoblast, Epiblast

Document Summary

Get access

Related Documents

HLTH201 Lecture : Developmental Biology Figures 3.docx

HLTH201 Lecture Notes - Lecture 2: Coronary Artery Disease, Lung Cancer, Longitudinal Study

HLTH201 Chapter Notes - Chapter 9: Simvastatin, Body Fluid, Warfarin

Related Questions