Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CMCA LEC 2nd Year, 1st Sem > fertilization > Flashcards

fertilization Flashcards

1
Q

process of FUSION of the SPERMATOZOON
with the MATURE OVUM

A

Fertilization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

begins with ____ and ____ collision and
ends with the production of a mononucleated
SINGLE CELL called _______ .

A

sperm, egg, zygote

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Almost always fertilization occurs in the _____

A

AMPULLARY portion of FALLOPIAN TUBES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The ovum immediately following _____ is PICKED UP by the _____ which partly envelope the
ovary, specially at the time of ovulation

A

ovulation, tubal fimbriae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The PICK UP ACTION might be ______ or by a kind
of ______ by _____ or by a ______exerted by the _____ tubular secretion

A

muscular, suction, ciliary action, positive chemotaxis, tubular secretion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

________ - how it gets out/excreted
suction - __________
________ - picks up the ovum

A

approximation - how it gets out/excreted
suction- to transport
fimbriae- picks up the ovum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

WHAT is rapidly TRANSPORTED to the ampullary
part.

A

ovum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

WHERE is ovum rapidly TRANSPORTED

A

ampullary part.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Fertilized lifespan of

oocytes ranges from _____
sperm is _______

A

oocyte = 12 to 24 hours
sperm = 48 to 72 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

t/f

Out of hundreds of millions of sperms deposited in
the vagina at single ejaculation only ONE THOUSAND of capacitated spermatozoa enter the uterine tube while only SEVEN HUNDRED reach the ovum.

A

f

Out of HUNDREDS OF MILLIONS of sperms deposited in the vagina at single ejaculation only THOUSANDS of capacitated spermatozoa enter the uterine tube while only THREE TO FIVE HUNDRED reach the ovum.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

WHAT is facilitated by muscular contraction and aspiration action of the uterine tube.

A

The tubal transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The tubal transport is facilitated by ______ and _______ of the uterine tube

A

muscular contraction, aspiration action

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

_________ of the cells of the ______ occurs by the chemical action of the _______ liberated from the ______ of the hundreds of sperm present at the site

A

Complete dissolution, corona radiata, HYALURONIDASE, Acrosomal cap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Penetration of _____ is facilitated by ______

A

Zona pellucida, Hyaluronidase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Soon after the Sperm fusion, what PREVENTS THE PENETRATION of other sperm

A

ZONA REACTION and COLEMA BLOCK

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

PROCESS OF FERTILIZATION

A

Chemo Attraction
Release of Acrosomal Enzymes
Binding of sperm to extracellular envelopes
Passage through extracellular envelopes
Fusion of sperm and egg pronuclei

17
Q

WHEN DOES LIFE BEGIN?

A

Every human cell has 46 CHROMOSOMES (Chr)
EXCEPT SPERM AND EGG which have 23
EACH. At conception they become a unique
human with 46 Chr.

18
Q

Sex of the child is determined by ______

A

the PATTERN OF SEX CHROMOSOME supplied by the SPERMATOZOON.

19
Q

If the SPERMATOZOON contains

‘X’ Chromosomes (XX) = _______
‘Y’ Chromosomes (XY) = _______

A

XX = FEMALE
XY = MALE

20
Q

MORULA

A

Fertilization → Zygote → Blastomeres → Morula →
Blastocyst

21
Q

After the zygote formation, a _______
division of the segmentation nucleus occurs
producing ________.

A

typical mitotic, two BLASTOMERES

22
Q

WHAT STAGE is reached approximately 30
hours after “FERTILIZATION”.

A

Two cells stage

23
Q

The two cells stage is reached approximately ______

A

30 hours after “FERTILIZATION”.

24
Q

WHAT continues to divide by binary
division through the 4,6,8 cell stage until a cluster of cells are formed and are called MORULA, resembling MULBERRY.

A

blastomeres

25
Q

The blastomeres continue to DIVIDE BY by ______ through the 4,6,8 cell stage until a cluster of
cells are formed and are called MORULA, resembling MULBERRY

A

binary division

26
Q

The blastomeres continue to DIVIDE BY BINARY FISSION TRHOUGH WHAT CELL STAGES?

A

4,6,8 CELL STAGES

27
Q

The blastomeres continue to divide by binary
division through the 4,6,8 cell stage until WHAT IS FORMED? are formed and are called MORULA, resembling MULBERRY.

A

cluster of cells

28
Q

The blastomeres continue to divide by binary
division through the 4,6,8 cell stage until CLUSTER OF CELLS ARE FORMED AND ARE CALLED

A

MORULA

29
Q

this resembles mulberry

A

MORULA

30
Q

By the what day does it form to 16-64 cell stage.

A

4th day

31
Q

By the 4th day it forms to _____ cell stage

A

16-64

32
Q

cluster of cells is called

A

morula

33
Q

While the morula REMAINS FREE in the uterine cavity on what days

A

4th and 5th days

34
Q

WHAT passes through the canaliculi of the zona
pellucida which separates the cells of morula and is
now termed as BLASTOCYST.

A

fluid

35
Q

WHERE DOES FLUID PASS THROUGH fluid passes which separates the cells of morula and is now termed as BLASTOCYST.

A

canaliculi of the zona pellucida

36
Q

Term for when fluid passes through the canaliculi of the zona pellucida which separates the cells of morula

A

BLASTOCYST

37
Q

WHAT is the next step so that trophectoderm cells interact with endometrial cells and implantation occurs.

A

Zona Hatching

38
Q

In Zona Hatching, what cells interact for implantation to occur?

A

trophectoderm cells and endometrial cells

39
Q

when ZYGOTE DIVIDES to 32 CELLS

A

BLASTOCYST

CMCA LEC 2nd Year, 1st Sem (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions