Study Guides (275,964)
CA (151,050)
McMaster (10,221)
KINESIOL (440)
Final

KINESIOL 1A03 Final: Kin1A03 Final Exam Review

103 Pages
72 Views
Spring 2018

Department
Kinesiology
Course Code
KINESIOL 1A03
Professor
Krista Howarth
Study Guide
Final

This preview shows pages 1-3. Sign up to view the full 103 pages of the document.
KINESIOL 1A03 (Anatomy) Exam Summary
1
EMBRYOLOGY:
- Embryonic period extends from fertilization through the eighth week of development;
development of organ systems.
- Fetal period last 30 weeks; organ systems grow and mature.
Overview:
1. Fertilization occurs within the uterine tube 12-
24 hours after ovulation.
2. Cleavage first cleavage completed about 30
hours after fertilization.
3. Morula 3-4 days after fertilization.
4. Blastocyst 4.5-5 days after fertilization.
5. Implantation 6 days after fertilization.
Fertilization:
- Merging of genetic information from sperm and
secondary oocyte.
- Sperm swim from the vagina to the cervix using their tails.
- Sperm pass through the uterus and uterine tubes due to contraction of the walls of these
structures.
- Must penetrate the corona radiata and the zona pellucida.
- Corona Radiata Zona Pellucida Plasma Membrane of
Secondary Oocyte Cytoplasm of Secondary Oocyte.
- Corona Radiata penetrated due to the enzymes of the
spe’s aosoe, alog ith tail oeet.
- Zona Pellucida glycoprotein ZP3 (receptor on zona
pellucida) binds to the sperm; acrosomal enzymes are
released to digest a path in the zona pellucida.
- Haploid nucleus in the sperm becomes the male pronucleus;
haploid nucleus in the fertilized ovum becomes the female
pronucleus.
- Syngamy when the two haploids merge; form a diploid zygote.
Cleavage:
Day 1:
- Zygote begins mitotic division (cleavage).
- First division takes around 6 hours; successive divisions take less
time.
Day 2:
- Second cleavage is complete, yielding 4 cells.
Morula:
Day 4:
find more resources at oneclass.com
find more resources at oneclass.com
KINESIOL 1A03 (Anatomy) Exam Summary
2
- End of 3rd day 16 cells; each division yields blastomeres (smaller and
smaller cells).
- 4th day cluster of cells form (morula); still surrounded by the zona
pellucida, and still the size of the zygote.
Days 4/5:
- Morula enters the uterine cavity, and is nourished by uterine milk.
- 32 cells fluid inside the morula rearranges the blastomeres into the blastocoel
(blastocyst cavity).
- Whole mass is called a blastocyst.
Blastocyst:
Day 5:
- Two different cell populations arise as the blastocyst is formed:
o Embryoblast (inner cell mass) develops in the embryo.
o Trophoblast (outer cell mass) develops in the chorionic sac
surrounding the fetus, and the fetal portion of the placenta.
Implantation (Days 6-7):
- Blastocyst is free in the uterine cavity for 2 days.
- Implants by attaching to the endometrium at around 6 days after
fertilization.
- Occurs in either the posterior portion of the fundus or the body of
the uterus.
- Embryoblast orients towards the endometrium.
- After implantation, the
endometrium is called the
decidua.
- Has different regions named
based on their positions relative
to the site of the implanted
blastocyst.
8 Days:
- Layer in closest contact with endometrium: syncytiotrophoblast.
o Does’t hae as uh ellula stutue; loose ouda i tes of those ells.
o Secrete enzymes that digest/liquefy the endometrial cells.
o Allows for the embryo to embed into the endometrial structure.
- Deep to that: cytotrophoblast.
- These two layers will come to form the chorion (fetal membrane).
find more resources at oneclass.com
find more resources at oneclass.com
KINESIOL 1A03 (Anatomy) Exam Summary
3
o Also begin to secrete hCG (human
Chorionic Gonadotropin); only appears
once these cell structures become active.
o Hormone that helps to maintain the
lining of the endometrium.
o Most typically detected in home
pregnancy tests.
- Embryoblast develops into two layers: hypoblast
and epiblast.
- Hypoblast (primitive endoderm).
- Align into the bilaminar embryonic disc.
o Epiblast arranges itself so that it has a
cavity inside (amniotic cavity); eventually
enlarges and surrounds the whole embryo.
- Yolk sac cellular layer is now fully developed in terms of the growth of the hypoblast.
- Hypoblast cells start to migrate towards the amniotic cavity (exocoelomic membrane).
o Exocoelomic membrane combines with the hypoblasts to create the yolk sac.
9 Days:
- Lacunae begin to form from the
syncytiotrophoblasts; open cavities where blood
supply/placenta form.
12 Days:
- Yolk sac is fully formed.
- Amnion/amniotic cavity still present.
- Extraembryonic mesoderm form from the cells of
the yolk sac; also start to form a connective tissue layer around the yolk sac/amnion.
o Also forms cavities; eventually turn into a single, larger cavity called the
extraembryonic coelom (coelom =
cavity).
- Lacunae are getting larger; some are linked to
capillary/blood vessel structures in the
endometrium; form sinusoids (endometrial
capillaries around the developing embryo),
and will eventually link up and form a blood
vessel network.
- Extraembryonic mesoderm, together with the
trophoblast cells, will form an external
structure called the chorion.
o Blocks antibody production from the mother, promotes production of immune
cells (T-lymphocytes), continues to produce hCG which supports the lining of the
endometrium.
find more resources at oneclass.com
find more resources at oneclass.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
KINESIOL 1A03 (Anatomy) Exam Summary EMBRYOLOGY: Embryonic period extends from fertilization through the eighth week of development; development of organ systems. Fetal period last 30 weeks; organ systems grow and mature. Overview: 1. Fertilization occurs within the uterine tube 12 24 hours after ovulation. 2. Cleavage first cleavage completed about 30 hours after fertilization. 3. Morula 34 days after fertilization. 4. Blastocyst 4.55 days after fertilization. 5. Implantation 6 days after fertilization. Fertilization: Merging of genetic information from sperm and secondary oocyte. Sperm swim from the vagina to the cervix using their tails. Sperm pass through the uterus and uterine tubes due to contraction of the walls of these structures. Must penetrate the corona radiata and the zona pellucida. Corona Radiata Zona Pellucida Plasma Membrane of Secondary Oocyte Cytoplasm of Secondary Oocyte. Corona Radiata penetrated due to the enzymes of the sperms acrosome, along with tail movement. Zona Pellucida glycoprotein ZP3 (receptor on zona pellucida) binds to the sperm; acrosomal enzymes are released to digest a path in the zona pellucida. Haploid nucleus in the sperm becomes the male pronucleus; haploid nucleus in the fertilized ovum becomes the female pronucleus. Syngamy when the two haploids merge; form a diploid zygote. Cleavage: Day 1: Zygote begins mitotic division (cleavage). First division takes around 6 hours; successive divisions take less time. Day 2: Second cleavage is complete, yielding 4 cells. Morula: Day 4: 1
More Less
Unlock Document

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

You've reached the limit of 4 previews this month

Create an account for unlimited previews.

Already have an account?

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit