The Menstrual Cycle.

Slides:

Advertisements

Similar presentations

The Menstrual Cycle. What is the menstrual cycle? The process in which females ripen or release one mature egg. The average menstrual cycle will repeat.

Advertisements

Female Hormone Regulation

The Menstrual and Ovarian Cycles

Female Hormonal Cycle or the MENSTRUAL CYCLE MENSTRUAL CYCLE Normal cycle length is considered 28 days, however it can range from days divided.

The Human Menstrual Cycle What is the importance and stages in the human menstrual cycle?

Stage 1 – Menstruation Starts on Day 1 – lasts 3-7 days Hormones – travel in blood to target tissue – ALL 4 hormones at lowest levels Ovary – – Follicle.

The Menstrual and Ovarian Cycles The Truth behind PMS!!

FEMALE REPRODUCTIVE SYSTEM

Name the parts of the female reproductive system. Describe the production, function and storage of egg cells. Explain the function of hormones in the.

Do Now Name three organs of the female reproductive system

Control of the Oestrous Cycle

Ovulation and Menstruation. Function of Menstrual Cycle Uterine walls thickens with rich blood supply in preparation for a fertilized egg If fertilization.

Female Reproductive System

 Follicle Stimulating Hormones (FSH) and Luteinizing Hormone (LH)- released in the pituitary gland.  Estrogen- Development of the female secondary sexual.

MENSTRUAL CYCLE. Major stage of puberty (between the ages of 8 and 13) From the beginning of one period to the beginning of the next takes about 28 days.

The Menstrual Cycle.

Menstruation IF fertilization does NOT take place Menstrual cycle – a series of changes controlled by hormones that help prepare the female uterus for.

Menstrual Cycle. The Cycle Strongly linked to the endocrine system (hormone based) Typically takes 28 days to cycle through 4 phases ◦ Follicular ◦ Ovulation.

Hormonal Control of the Menstrual Cycle Inside the ovary of females there are large sac like structures called Graafian follicles Each follicle contains.

Vagina Day Female Reproduction.

Menstrual Cycle Regulation

FEMALE REPRODUCTIVE SYSTEM

Accelerated Biology.  Some important vocabulary  Follicle – a cluster of cells that surrounds an immature egg and provides it with nutrients (where.

HHD The Menstrual Cycle

PART 2B THE FEMALE REPRODUCTIVE SYSTEM - HORMONES.

Aim: How can hormones influence the reproductive cycles in humans? Do Now: Using the diagrams below, which structures produce hormones? What hormones are.

The Uterine (Menstrual) Cycle CHRISTIAN CHEW BIOL 260 | TUESDAY LAB | TONINI.

Human Reproduction. Reproduction – is the formation of new individuals.  The reproductive system produces, stores, and releases specialized sex cells.

Female Reproductive Cycle Or Menstrual Cycle

Uterine (Menstrual) Cycle

Understanding Ovulation

Menstrual Cycle and Fertilization

Human Reproduction.

Unit B: Reproduction and Development

The Reproductive System

The Menstrual Cycle Biology 12.

Control of the oestrous cycle

Understanding Ovulation

Understanding Ovulation

MENSTRUAL CYCLE Occurs APPROXIMATELY every 28 days

Menstruation & Conception

Both a reproductive organ, and an endocrine gland

Menstruation IF fertilization does NOT take place

The Menstrual Cycle Year 8 Science.

Menstruation IF fertilization does NOT take place

Male and Female Reproductive System

Human Reproduction 6.6.

MENSTRUAL CYCLE.

Ch. 18 – Male/Female Reproduction

Human Reproduction The Menstrual Cycle.

Topic: Human Reproductive System

A reproductive organ, and an endocrine gland

Introduction: Menstrual Cycle

The Menstrual Cycle.

Both a reproductive organ, and an endocrine gland

Animal Reproduction Chapter 46.

Menstrual Cycle.

The Female Menstrual Cycle

Introduction: Menstrual Cycle

Hormone Description FSH LH estrogen progesterone

Reproductive Hormones

The Menstrual cycle.

Regulation of the Reproductive System

Prepared By, Ms. Bincy Cherian Asst.prof College of Nursing Kishtwar

Determining Sex In mammals, sex is determined early in development

The Menstrual Cycle.

Female Physiology.

Presentation transcript:

The Menstrual Cycle

What is the menstrual cycle? The process in which females ripen or release one mature egg. The average menstrual cycle will repeat itself about every 28 days, but normal menstrual cycles can range from 21 to 40 days.

Changes in Pituitary Hormones Days 1-14: During the first half of the cycle (Days 1-14) the pituitary produces FSH, which stimulates egg production. This hormone also triggers the release of estrogen from the ovaries.

Changes in Pituitary Hormones Days 14-28: On the 14th day the pituitary begins releasing LH causing ovulation LH also directs the production of progesterone which maintains the growth of the endometrium. If the egg is not fertilized upon arrival in the uterus progesterone levels drop causing estrogen levels to drop leading to menstruation.

Changes in the Ovaries: Stage 2 - egg continues to ripen; follicle growth. Stage 3 - Ovulation fully mature egg bursts out of follicle. Stage 1 - ovum begins to develop. Stage 4 - Egg enters fallopian tube follicle remains and forms the corpus luteum.

Changes in the Ovaries: Stage 1 - An egg is beginning to mature within a cluster of cells called a follicle Stage 2 - Rapid follicle and egg growth Stage 3 - Ovulation occurs; fully mature egg bursts out of the follicle (fertile) empty follicle transforms into the corpus luteum Stage 4 - Egg travels through fallopian tube (7 days) if not fertilized upon arrival in uterus the corpus luteum shrinks triggering menstruation and ripening of new egg.

Changes in the Uterus: Stage 2 Day 5- 13 pre-ovulatory stage Stage 1- Day 1-5 menstruation Stage 3 Day 14 Ovulation Stage 4 Day 15-28 post-ovulatory stage

Changes in the Uterus: Stage 1- Menstruation- Endometrium breaks down and blood, mucus, tissue, and the egg are shed through the vagina. Stage 2- Menstrual flow stops & endometrium begins to thicken. Stage 3- Endometrium continues to thicken. Stage 4- The endometrium is at it’s thickest point.