19 - Reproductive system Flashcards
List the four functions of the reproductive system.
- Production of gametes.
- Fertilisation
- Development and nourishment of a new individual
- Production of reproductive hormones.
Explain the following function of the reproductive system: 1. Production of gametes.
The reproductive system produces gametes: sperm cells in the testes of males and oocytes (eggs) in the ovaries of females.
Explain the following function of the reproductive system: 2. Fertilisation
The reproductive system enhances fertilisation of the oocyte by the sperm. The duct system in males nourishes sperm until they are mature and are deposited in the female reproductive tract by the penis. The female reproductive system receives the male’s sperm and transports them to the fertilisation site.
Explain the following function of the reproductive system: 3. Development and nourishment of a new individual
The female reproductive system nurtures the development of a new individual in the uterus until birth and provides nourishment (milk) after birth.
Explain the following function of the reproductive system: 4. Production of reproductive hormones.
Hormones produced by the reproductive system control its development and the development of gender-specific body form. These hormones are also essential for the normal function of the reproductive system and for reproductive behaviour.
What are gametes?
Sex cells! (sex sells)
The formation of gametes in males and females occur by a type of cell division called…
meiosis.
Where does meiosis occur?
In the testis and ovary.
During meiosis, x cell(s) undergoes y consecutive cell division(s) to produce z daughter cells, each having n chromosomes.
During meiosis, one cell undergoes two consecutive cell divisions to produce four daughter cells, each having half as many chromosomes as the parent cell.
Sperm cells are developed in the ..
seminiferous tubules in the testes.
What are the major reproductive hormones in males?
- Gonadotropin-releasing hormone (GnRH)
- Lutenizing hormone (LH)
- Follicle-stimulating hormone (FSH)
- Testosterone
- Inhibit
What are the major reproductive hormones in females?
- Gonadotropin-releasing hormone (GnRH)
- Lutenizing hormone (LH)
- Follicle-stimulating hormone (FSH)
- Oestrogen
- Progesterone
- Oxytocin
What is the source and target tissue of the Gonadotropin-releasing hormone (GnRH) in males?
Hypothalamus
Anterior pituitary
What is the source and target tissue of Lutenizing hormone (LH) in males?
Anterior pituitary
Interstitial cells of the testes
What is the source and target tissue of Follicle-stimulating hormone (FSH) in males?
Anterior pituitary
Seminiferous tubules
What is the source and target tissue of Testosterone in males?
Interstitial cells of testes
Testes; body tissues
Anterior pituitary and hypothalamus
What is the source and target tissue of Inhibit in males?
Sustentacular cells
Anterior pituitary
What is the source and target tissue of Gonadotropin-releasing hormone in females?
Hypothalamus
Anterior pituitary
What is the source and target tissue of Lutenizing hormone (LH) in females?
Anterior pituitary
Ovaries
What is the source and target tissue of Follicle-stimulating hormone in females?
Anterior pituitary
Ovaries
What is the source and target tissue of Oestrogen in females?
Follicles of ovaries and corpus luteum
Uterus
Breasts
Anterior pituitary and hypothalamus
Other tissues
What is the source and target tissue of Progesterone in females?
Corpus lute of ovaries
Uterus
Breasts
Anterior pituitary
Other tissues