Summary Maternal and Child Nursing Reviewer I - Part 8
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Course
Maternal And Child Nursing
Institution
Pamantasan Ng Lungsod Ng Maynila
Book
The Nurse and the Childbearing Family
The document is part of an another series of reviewers in line with Maternal and Child Nursing. Purchase all of the documents to have a better comprehension and complete picture of the topic. The reviewers in this series is a very comprehensive and competently summarized for students who are crammi...
TABLE OF CONTENTS MATURE EGG/OVUM:
• REPRODUCTIVE & SEXUAL HEALTH - during ovulation period the graafian follicle
1. Process of Fertalization will release mature eggs which contains
abundant estrogen level resulting to increase
• SOURCE: Pilliteri 6th Edition – Maternal and
the motility of uterine walls so that their tiny-
Child Nursing
hair like structure (cilia) is able to get the
ovum and drive to uterine cavity.
- OVA contains 22 autosomes and 1 sex
chromosome.
LESSON IX: PROCESS OF FERTILIZATION
• FERTILIZATION: is the union of an ovum and a • An ovum can only move with the aid of the 2
spermatozoon. protective layers that surrounds namely:
- This usually occurs in the outer third of a 1. ZONA PELLUCIDA: acellular and thick inner
fallopian tube, the ampullar portion layer
• ZYGOTE: ovum and spermatozoa 2. CORONA RADIATA: the outer layer consists
• No more other sperm can ever enter the of elongated cells.
membrane this process is known as Zona
SPERM
reaction.
- normally can release 3-5cc (1 teaspoon) with
- Conception/Pregnancy is the formation of
a normal count of about 150-200-500 million
zygote.
per ejaculation.
- It occurs when the second meiotic division of
- 22 autosomes and 1 X or 1 Y sex
the oocyte is then accomplished, and the
chromosomes.
combinations of ovum nucleus (female
- Moves with the aid of the flagellar movement
pronucleus) and the head of sperm enlarges
of the tail.
(male pronucleus) and the tail degenerates.
- It can reach the point of fertilization within 5
• After fertilization, CLEAVAGE, is the mitotic
mins but basically can travel about 4-6 hours
cellular reproduction and starts with movement of
- It can also continue to be viable within the
fertilized ovum (zygote) within 3-4 days (72-96
vagina 2-3 days
hours) from the fallopian tube going to the uterus.
- The female reproductive tract will produce an
• BLASTOMERES: fertilized ovum that splits
enzyme that will help in capacitation as the
rapidly.
sperm explores.
• MORULA: 16 blastomeres.
• ACROSOME: Small hole will form in the coating on
o ZORA PELLUCIDA: protective covering.
the sperm.
• BLASTOCYST: As cavity is formed in the morula
- essential for sperm to penetrate to the
and becomes identifiable.
protective coating of the ovum before.
o EMBRYOBLAST: outer layer which gives
rise to the embryo. • CAPACITATION is a normal change the removes
o TROPHOBLAST: gives rise to the placenta. the protective coating from the head of sperm
Small hole will form in the coating on the
sperm known as acrosome
- The enzymes are essential for sperm to
penetrate to the protective coating of the
ovum before fertilization
- Sperm have 22 autosomes and 1 X or 1 Y
sex chromosome
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