Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Higher Human 2.3

2.3- The biology of controlling fertility

QuestionAnswer
What kind of fertility is shown in females? cyclical fertility
What kind of fertility is shown in males? continuous fertility
What does cyclical fertility mean? Women are only fertile for a few days during each menstrual cycle.
What does continuous fertility mean? Men continually produce sperm in their testes so show continuous fertility
What can be used as Identification of the fertile period? A woman’s body temperature rises by around 0·5°C after ovulation and her cervical mucus becomes thin and watery
Ovulation can be stimulated by drugs that prevent the negative feedback effect of what hormones? oestrogen on FSH secretion
Other ovulatory drugs mimic the action of FSH and LH. What can this lead too? These drugs can cause super ovulation
What can super ovulation result in? multiple births or be used to collect ova for in vitro fertilisation (IVF) programmes.
Describe the process of artificial insemination. Several samples of semen are collected over a period of time. The doctors implants semen into cervix or uterus.
When is artificial insemination particularly useful? Artificial insemination is particularly useful where the male has a low sperm count
What can be used for artificial insemination if the partner is sterile? donor sperm
Describe Intra-cytoplasmic sperm injection (ICSI) The head of the sperm is drawn into a needle and injected directly into the egg to achieve fertilisation.
When will Intra-cytoplasmic sperm injection (ICSI) be used? If mature sperm are defective or very low in number, ICSI can be used.
Describe In vitro fertilisation (IVF). Eggs are mixed with sperm in a culture dish. The fertilised eggs are incubated until they have formed at least eight cells and are then transferred to the uterus for implantation.
How are eggs for IVF obtained? Surgical removal of eggs from ovaries after hormone stimulation
The use of IVF in conjunction with pre-implantation genetic diagnosis (PGD) helps to indentify? single gene disorders and chromosomal abnormalities.
What are some physical methods of contraception? barriers (condoms) intra-uterine devices sterilisation procedures
What are some chemical methods of contraception? The oral contraceptive pill The progesterone-only (mini) pill Emergency hormonal contraceptive pills
What does the The oral contraceptive pill do? It contains a combination of synthetic oestrogen and progesterone that mimics negative feedback preventing the release of FSH and LH from the pituitary gland.
What does the progesterone-only (mini) pill do? causes thickening of the cervical mucus
When can Emergency hormonal contraceptive pills be taken? they can be taken up to 72 hours or 120 hours after unprotected sex, depending on which type of pill is used’.
What does the Emergency hormonal contraceptive pill do? prevent or delays ovulation.
Created by: mackas89
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards