Reproductive system Flashcards
Male and female sex organ functions:
- Production of gametes (sex cells)
2. Production of hormones
Production of gametes (sex cells) and production of hormones are under the control of:
Tropic hormones from the pituitary gland
Testicular activity is under the control of 2 anterior pituitary hormones:
- FSH regulates sperm production
2. ICSH/ LH stimulates interstitial cells to produce testosterone
Interstitial cells:
Lie between the seminiferous tubules and produce testosterone
Where does sperm develop?
Within the seminiferous tubules of each testis
Testosterone function:
Influences sperm cell development and produces male secondary sex characteristics (facial/body hair and deep voice)
Pathway of sperm upon ejaculation:
Vas deferens
Ejaculatory duct
Urethra
Glands/pathways that produce transport medium/semen:
Seminal vesicles
Prostate gland
Bulbourethral (Cowper’s glands)
Epididymis:
Where sperm is stored as they mature
Vas deferens:
Sperm duct
Seminal vescicles:
Secretes milky alkaline substance that help sperm survive in the acidic vagina
Prostate gland:
Thins semen
Bulbourethral (Cowper’s glands):
Lubricates urethra prior to ejaculation
Estrogen:
Produced by the follicle, initiates preparation of the endometrium of the uterus for pregnancy
Role of LH in female reproductive system:
Released from the pituitary, stimulates ovulation and the conversion of the follicle to corpus luteum
Corpus luteum secretes:
Estrogen and progesterone
Corpus luteum and fertilization:
If fertilization occurs, corpus luteum remains functional.
If fertilization does not occur, corpus luteum degenerates and menstruation occurs
What happens if fertilization occurs?
- The egg is in the oviduct/ fallopian tube
- The fertilized egg or zygote travels to the uterus and plants itself in the endometrium
- The developing embryo is nourished by the placenta
- Hormones from the placenta maintain the endometrium and prepare mammary glands for breast milk production
How is the placenta formed?
By embryonic and maternal tissues
Progesterone:
Stimulates the development of the endometrium
Internal female genitalia:
Ovaries
Fallopian tubes
Uterus
Vagina
Ovaries:
Produce oocytes and secrete sex hormones
Fallopian tube:
Captures oocytes during ovulation, leading to fertilization
Regulatory hormones that orchestrate the menstrual cycle:
- Gonadotropin releasing hormone (GnRH)
- Luteinizing hormone (LH)
- Follicle-stimulating hormone (FSH)
External female genitalia:
Vulva structures \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Mons pubis Labia majora Labia minora Bartholin's glands Clitoris
Mons pubis:
Fatty tissue overling pubic bone
Labia majora/minora:
Protects tissues
Barholin’s glands:
Lubricates vagina
Clitoris:
Nerve endings that contribute to sexual arousal