Brainscape's Knowledge GenomeTM

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


See full index

Human Biology Unit 2 > Fertilisation > Flashcards

Fertilisation Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

Cleavage

A

Rapid Mitotic Division

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

Fertilisation

A

Sperm and egg pro-nuclei fuse together

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

Zygote

A

Diploid cell (Fertilised Egg)

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

Morlua

A

Solid ball of cells, first 3-4 days

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

Blastocysts

A

Contains many cells including the inner cell mass and cavity, first 5-6 days

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

Implantation

A

Embedding of the blastocyst into the endometrium

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

Where does fertilisation occur?

A

Fallopian Tube (preferably in the top 3rd of it)

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

Why are millions of sperm released when one one is required?

A

So that there is a higher chance of the sperm reaching the egg and fertilisation occurring.

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

What hormone does the zygote produce

A

Human chorionic gonadotropin (HCG)

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

What is the function of Human chorionic gonadotropin?

A

To maintain the zygote and stops degeneration of the corpus lute

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

briefly describe the importance of capacitation

A

Surface of the sperm undergoes changes that are essential to enable the acrosome reaction.

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

Explain how the sperm reach the egg?

A

Energy in the from of fructose is in the sperm which the mitochondria use for the flagellum, as well as uterine contractions

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

Name the events of the stages of fertilisation

A
  1. Capacitation
  2. Acrosome Reaction
  3. Fusion of the egg and sperm plasma membranes
  4. The cortical reaction
  5. Fusion of egg and sperm nuclei
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

briefly describe the importance of acrosome reaction

A

Enzymes in the acrosome digest a path through the zone pellucida to the egg.

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

briefly describe the importance of fusion of sperm and egg plasma membranes

A

Once sperm enter the egg a ‘fast block’ is put in place to prevent other sperm rom entering the egg.

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

What are the stages of the zygote? (Include time)

A
  1. Zygote - After fertilisation
  2. Morula (3-4 days)
  3. Blastocyst (5-6 days)
  4. Embryo (5-8 weeks)
  5. Foetus (8-40 weeks)
17
Q

briefly describe the importance of fusion of sperm and egg nuclei

A

Fertilisation has occurred

18
Q

briefly describe the importance of cortical reaction

A

Fusion of the membranes induces a permanent block to prevent further sperm entry.

Human Biology Unit 2 (9 decks)

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