Menstrual Cycle: Prepared By: Mrs Bini P S Amuel Assistant Professor, SSRC N, Vapi
Menstrual Cycle: Prepared By: Mrs Bini P S Amuel Assistant Professor, SSRC N, Vapi
Menstrual Cycle: Prepared By: Mrs Bini P S Amuel Assistant Professor, SSRC N, Vapi
DEFINITION:
• Of changes that take place concurrently in the ovaries and uterine walls,
• Stimulated by changes in the blood concentrations of hormones.
• Hormones secreted in the cycle are regulated by negative feedback mechanisms.
FEMALE REPRODUCTIVE HORMONES
AND TARGET TISSUES
• After ovulation, the follicle lining cells develop into the corpus
luteum (yellow body), under the influence of LH from the anterior
pituitary. The corpus luteum produces the hormone progesterone
and some oestrogen. If the ovum is fertilised it embeds itself in
the wall of the uterus where it grows and develops and produces
the hormone human chorionic gonadotrophin (HCG),
Short-term unpredictable vasodilatation with flushing, sweating and palpitations, causing discomfort
Disturbance of the normal sleep pattern
Shrinkage of the breasts
Axillary and pubic hair become sparse
Atrophy of the sex organs
Episodes of uncharacteristic behaviour sometimes Occur, e.g. Irritability, mood changes
Gradual thinning of the skin
Loss of bone mass that predisposes to osteoporosis
Slow increase in blood cholesterol levels that predisposes postmenopausal women to Cardiovascular disorders.