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Unit 9 Learning aim Hormonal and homeostatic controll
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Hormonal and homeostatic controll assignments which both have achieved a distincion. Very detailed and helpfull
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Hormonal control of reproductionThe male genitals consist of two testicles, which hang in a sac (scrotum) as well as the penis. The
genitals are intricately linked to the male urinary tract. A disorder in one system can cause symptoms in
the other system as well. Each testicle is a gland that produces sperm and the male sex hormone,
testosterone. A long meandering canal called the epididymis is located behind each testicle. Here the
sperm matures.
Sperm cells are constantly being produced in both testicles. Sperm cells pass into the epididymis, where
they mature over a 2–3-week period before passing through the spermatic cord to the bladder neck
(prostate) shortly before ejaculation. In the prostate, they are mixed with fluid from the seminal vesicles
and the prostate, which together provide optimal conditions for the sperm.
Anatomy:
The male reproductive system consists of the genitals, accessory glands and a series of duct systems that
provide a path for sperm to leave the body and fertilize an egg. Male genitals only equip one organism to
initiate fertilization and do not support the development of a growing fetus. Male genitals include:
Penis: In the penis, the urethra is surrounded by a fungal-like tissue very rich in blood vessels, which
allows erection (erection) when blood temporarily fills the tissue.
Testicles: Each testicle is a gland that produces sperm (sperm) and the male sex hormone, testosterone. A
long meandering canal called the epididymis is located behind each testicle. Here the sperm mature.
Scrotum: Contains the testicles and protects them. And has a low temperature for good sperm
development
, Epididymis: Epididymis is a developed tube of approx. 6 meters in length surrounded by connective
tissue and blood vessels.
Ductus Deferens: Thick walled fibrous and muscular tube
Urethra: Allows the secretion of semen and urine
Ejaculatory duct: Is a duck from the Ductus deferens
Prostate gland: Produces milky fluid which is secreted into the urethra
Bulbourethral: Small glands located at the base of the penis. In response to sexual stimulation, these
glands secrete an alkaline fluid that helps neutralize acidity from the vagina and urine in the urethra.
The female reproductive system consists of both internal and external reproductive organs that both
enable fertilization and support embryonic development. Structures in the female reproductive system
include:
Vagina: A muscular tube leading from the cervix to the genetials
Cervix: Is the opening of the uterus
Uterine: necessary in the uterine cavity is a mucous membrane, which varies in thickness during the
menstrual cycle. The wall of the uterus is made up of strong muscles.
Fallopian tubes: The task of the fallopian tubes is to guide the egg from the ovaries down into the uterus
by, among other things. a. to make some small movements leading the egg forward. At the ends, the
fallopian tubes have some small cilia called "fimbriae".
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