Difference between revisions of "Menstrual Cycle"
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===About the Menstrual Cycle=== | ===About the Menstrual Cycle=== | ||
: The '''menstrual cycle''' is controlled by the [[hormone]]s; [[oestrogen]], [[progesterone]], [[Luteinising Hormone|luteinising hormone]] and [[Follicle Stimulating Hormone|follicle stimulating hormone]]. | : The '''menstrual cycle''' is controlled by the [[hormone]]s; [[oestrogen]], [[progesterone]], [[Luteinising Hormone|luteinising hormone]] and [[Follicle Stimulating Hormone|follicle stimulating hormone]]. | ||
+ | |||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |[[File:MenstrualCycleGraph2.png|center|500px]] | ||
+ | |- | ||
+ | | style="height:20px; width:500px; text-align:left;" |A [[graph]] showing changes during the '''menstrual cycle''' in: | ||
+ | : The stages of [[follicle]] growth and [[ovulation]]. | ||
+ | : The [[Body Temperature|body temperature]]. | ||
+ | : The [[hormone]] levels. | ||
+ | : The relative thickness of the [[Uterus|uterine wall]]. | ||
+ | |} | ||
+ | *[[Oestrogen]] - [[Secrete]]d by the [[ovary|ovaries]] in [[female]]s and causes the expression of [[Secondary Sexual Characteristic|secondary sexual characteristics]] during [[puberty]]. | ||
+ | *[[Progesterone]] - [[Secrete]]d by the [[ovary|ovaries]] in [[female]]s and causes the lining of the [[uterus]] to become thicker during the [[Menstrual Cycle|menstrual cycle]]. | ||
+ | *[[Luteinising Hormone]] - [[Secrete]]d by the [[Pituitary Gland|pituitary gland]] in [[female]]s and causes an [[ovum]] to be released from a [[follicle]] in the [[ovary|ovaries]]. | ||
+ | *[[Follicle Stimulating Hormone]] - [[Secrete]]d by the [[Pituitary Gland|pituitary gland]] in [[female]]s and causes [[follicle]]s to grow in the [[ovary|ovaries]]. |
Revision as of 17:53, 16 November 2018
Contents
Key Stage 3
Meaning
The menstrual cycle is the changes that happen to the female reproductive system every 28 days.
About the Menstrual Cycle
- The menstrual cycle in humans repeats every month.
In the first 6 days of the menstrual cycle the uterine wall leaves through the vagina. This is often called a 'period'. | On day 7 an ovum begins to mature and the uterine wall starts to build back up again. | The uterine wall continues to build up. | The uterine wall continues to build up. |
The uterine wall continues to build up. | The ovum is released from the ovary. | The ovum travels down the oviduct. | If the ovum is not fertilised the uterine wall breaks down. |
A graph showing the relative thickness of the uterine wall through the 28 days of the menstrual cycle. |
Key Stage 4
Meaning
The menstrual cycle is a regular change in the organs of the female reproductive system that include ovulation and menstruation (periods).
About the Menstrual Cycle
- The menstrual cycle is controlled by the hormones; oestrogen, progesterone, luteinising hormone and follicle stimulating hormone.
A graph showing changes during the menstrual cycle in:
|
- Oestrogen - Secreted by the ovaries in females and causes the expression of secondary sexual characteristics during puberty.
- Progesterone - Secreted by the ovaries in females and causes the lining of the uterus to become thicker during the menstrual cycle.
- Luteinising Hormone - Secreted by the pituitary gland in females and causes an ovum to be released from a follicle in the ovaries.
- Follicle Stimulating Hormone - Secreted by the pituitary gland in females and causes follicles to grow in the ovaries.