Answer the following questions from your knowledge of human reproduction - Leaving Cert Biology - Question 13 - 2019
Question 13
Answer the following questions from your knowledge of human reproduction.
(a) Contraception can include natural, mechanical, and chemical methods.
Give one example... show full transcript
Worked Solution & Example Answer:Answer the following questions from your knowledge of human reproduction - Leaving Cert Biology - Question 13 - 2019
Step 1
Contraception can include natural, mechanical, and chemical methods. Give one example of each of the above types of contraception.
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Answer
Natural method: Withdrawal or abstinence (rhythm method).
Mechanical method: Condom or diaphragm (IUD) or vasectomy/tube ligation.
Chemical method: Pill (hormonal contraceptive), vaginal ring, spermicide, or implant.
Step 2
Draw a large diagram of the human female reproductive system. On your diagram, label the following parts.
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Answer
The diagram should include the following labels:
Oviduct (Fallopian tube)
Cervix
Ovary
Vagina
Uterus
Endometrium.
Step 3
On your diagram, use the letter M to label the site of meiosis, use the letter F to label the usual site of fertilisation.
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M should be labeled on the ovary, as it is the site of meiosis. F should be labeled on the oviduct (Fallopian tube), as it is the usual site of fertilisation.
Step 4
Name a human female menstrual disorder. For this disorder give: 1. A possible cause 2. A method of treatment.
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Menstrual disorder: Fibroids.
Possible cause: Abnormal hormonal response or genetic factors.
Method of treatment: Surgery or Hormone Replacement Therapy (HRT).
Step 5
What is meant by the term implantation?
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Implantation refers to the process of embedding (attaching) the fertilised egg into the endometrium (lining of the uterus).
Step 6
Name, in the correct order, the developmental stages from the fertilised egg to implantation.
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Morula
Blastocyst.
Step 7
Outline what happens to each of the following after implantation has taken place: 1. The level of the hormone progesterone in the blood. 2. The endometrium.
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The level of progesterone in the blood increases after implantation.
The endometrium is maintained or thickens to support the developing embryo.
Step 8
Embryo cells organise into three germ layers. Name each of these layers.
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Ectoderm
Mesoderm
Endoderm.
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