Reproductive System Flashcards
What is adolescence?
Transitional phase from childhood to adulthood
Teenage years 13-19 years of age
Huge increased period of growth and development
>Physical and sexual maturation
>Social and economic independence
>Development of identity
What are the reproductive hormones produced by the anterior pituitary gland?
Lutenizing hormone (LH) In girls- Increased levels trigger ovulation In boys- Stimulated Leydig cells to make testosterone
Follicle stimulating hormone (FSH) In girls- Initiates follicular growth In boys- Induces Sertoli cells- spermatogenesis
Describe the role of oestrogen
Made in the ovaries
FSH stimulates the ovarian production
Promotes development of secondary sexual characteristics
Describe the role of progesterone
Mammary gland development in females
>Develops with prolactin during pregnancy
Thickens endometrium for implantation
Describe the role of testosterone
Secretes primarily in the testicles in males
Some secretion in the ovaries
Male levels 7-8 times higher than females
Development of secondary sexual characteristics
>Penile/cliteral englargement
>Increased libido
>Hair growth
>Increased muscle mass
>Broader shoulders
>Voice deepening
Describe the effects of testosterone
Aggression
Active attitude
Increases in sex develops
Describe the effects of PMS
Tension or anxiety Depressed/crying Mood swings and irritability or anger Appetite changes and food cravings Insomnia Social withdrawal Poor concentration Joint or muscle pain Headache Fatigue Weight gain related to fluid retention Abdominal bloating Breast tenderness Acne flare-ups Constipation or diarrhoea
What are some emotional changes in adolescence?
Mood swings Fluctuations of hormones Frustrations (child to adult) Wanting independence and control Peer influences Body image Self esteem Sexual desires
What is adrenarche?
Onset of androgen dependent changes e.g. public and axillary hair, BO, acne
What is thelarche?
Onset of female breast development
What is puberty?
Development of secondary sexual characteristics. attain reproductive capacity
What is menarche?
Onset of menstruation
Describe the endocrinology of puberty
Hypothalamus -gonadotrophin releasing hormone (GnRH) (LHRH) Pituitary gland -Lutenizing hormone (LH) -Follicle stimulating hormone (FSH)
What hormones effect on the ovaries?
LH and FSH
What effect does oestrogen have in girls
Breast growth
Vaginal growth
Clitoris growth
What effect does progesterone have on girls?
Vaginal and uterine growth
Initiation of cyclical changes in endometrium and ovary
What are the stages of puberty in girls?
Breast growth
Acceleration in hight velocity
Pubic and axillary hair growth
Menarche
Describe thelarche in girls
Occurs in response to oestrogen secretion from the ovaries
Approximate age at commencement of breast budding: 11 1/2 years of age
Characteristic changes in the shape of the breast occur during puberty: Tanner staging
Describe adrenarche in girls
Pubic and axillary hair growth become evident after breast budding
Early pubic hair is sparse, fine and straight, changes in character progress through puberty until adulthood
Distribution extends from the labia to the inner thigh
Describe menarche (first period)
Unusual to see before Pubic Hair Stage 4
Around 13 years
Approximately 1-2 years of growth left: 5cm