File Name: structure and function of female reproductive system .zip
The ovary is an organ found in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus , where it may become fertilized by a sperm. The ovaries also secrete hormones that play a role in the menstrual cycle and fertility. The ovary progresses through many stages beginning in the prenatal period through menopause. It is also an endocrine gland because of the various hormones that it secretes.
Human reproductive system , organ system by which humans reproduce and bear live offspring. Provided all organs are present, normally constructed, and functioning properly, the essential features of human reproduction are 1 liberation of an ovum , or egg , at a specific time in the reproductive cycle, 2 internal fertilization of the ovum by spermatozoa, or sperm cells, 3 transport of the fertilized ovum to the uterus , or womb, 4 implantation of the blastocyst, the early embryo developed from the fertilized ovum, in the wall of the uterus, 5 formation of a placenta and maintenance of the unborn child during the entire period of gestation , 6 birth of the child and expulsion of the placenta, and 7 suckling and care of the child, with an eventual return of the maternal organs to virtually their original state. For this biological process to be carried out, certain organs and structures are required in both the male and the female. The source of the ova the female germ cells is the female ovary ; that of spermatozoa the male germ cells is the testis. In females, the two ovaries are situated in the pelvic cavity; in males, the two testes are enveloped in a sac of skin, the scrotum , lying below and outside the abdomen. Besides producing the germ cells, or gametes , the ovaries and testes are the source of hormones that cause full development of secondary sexual characteristics and also the proper functioning of the reproductive tracts.
Ovaries are the female gonads — the primary female reproductive organs. These glands have three important functions: they secrete hormones, they protect the eggs a female is born with and they release eggs for possible fertilization. Human females are typically born with two ovaries stemming from the uterus. Before puberty, ovaries are just long bundles of tissue. As the female matures, so do her ovaries. When mature, ovaries are about the size of a large grape , according to EndocrineWeb. The ovaries lie on either side of the uterus against the pelvic wall in a region called the ovarian fossa.
The female reproductive system is made up of the internal and external sex organs that function in reproduction of new offspring. In humans, the female reproductive system is immature at birth and develops to maturity at puberty to be able to produce gametes , and to carry a foetus to full term. The internal sex organs are the uterus , Fallopian tubes , and ovaries. The uterus or womb accommodates the embryo which develops into the foetus. The uterus also produces vaginal and uterine secretions which help the transit of sperm to the Fallopian tubes.
The female reproductive system includes the ovaries, fallopian tubes, uterus, vagina, vulva, mammary glands and breasts. These organs are involved in the production and transportation of gametes and the production of sex hormones. The female reproductive system also facilitates the fertilization of ova by sperm and supports the development of offspring during pregnancy and infancy. The ovaries are a pair of small glands about the size and shape of almonds, located on the left and right sides of the pelvic body cavity lateral to the superior portion of the uterus. Each month during ovulation, a mature ovum is released. The ovum travels from the ovary to the fallopian tube, where it may be fertilized before reaching the uterus.
The uterus is a secondary sex organ. Secondary sex organs are components of the reproductive tract that mature during puberty under the influence of sex hormones produced from primary sex organs the ovaries in females and the testes in males. The uterus is a thick-walled muscular organ capable of expansion to accommodate a growing fetus. It is connected distally to the vagina, and laterally to the uterine tubes. The exact anatomical location of the uterus varies with the degree of distension of the bladder. In the normal adult uterus, it can be described as anteverted with respect to the vagina, and anteflexed with respect to the cervix:. Thus, the uterus normally lies immediately posterosuperior to the bladder , and anterior to the rectum.
Reproductive tract of the cow (corsal aspect). the body of the uterus, vagina, Structure of ovary i. primary function is the reduction of chromosome number.
These parts are internal; the vagina meets the external organs at the vulva, which includes the labia, clitoris, and urethra. The vagina is attached to the uterus through the cervix, while the uterus is attached to the ovaries via the fallopian tubes. At certain intervals, the ovaries release an ovum, which passes through the fallopian tube into the uterus. If, in this transit, it meets with sperm, the sperm penetrates and merges with the egg, fertilizing it. The fertilization usually occurs in the oviducts, but can happen in the uterus itself.
The information below was adapted from OpenStax Biology Sperm are small, mobile, low-cost cells that occur in high numbers. Eggs are large cells that require a substantial investment of time and energy to form, are non-mobile, and are rare relative to sperm numbers.
Шум генераторов внизу с каждой минутой становился все громче.
Я распечатаю список. Войду, возьму его и тотчас выйду. Давай ключ. - Мидж… Она прекратила печатать и повернулась к. - Чед, список будет распечатан в течение тридцати секунд.
Это. - подумала она удивленно и с облегчением и попыталась выскользнуть из-под. - Милый, - глухо прошептала. - Позволь, я переберусь наверх. - Но немец даже не шевельнулся.
Какого черта ему здесь надо? - спросил Стратмор, как только они с Сьюзан оказались за дверью Третьего узла. - Как всегда, валяет дурака, - сказала Сьюзан. Стратмор не скрывал недовольства. - Он ничего не спрашивал про ТРАНСТЕКСТ.
- Он задумчиво посмотрел на. - Я являюсь заместителем оперативного директора агентства. - Усталая улыбка промелькнула на его лице.
Зато был другой голос, тот, что звал. Кто-то рядом с ним попытался его приподнять. Он потянулся к голосу.
Наверху, на экране ВР, возникла первая из пяти защитных стен. Черные атакующие линии начали исчезать. - Происходит восстановление! - кричал Джабба.
This system is extremely complex and requires very precise timing of all its integral parts to be able to produce a take-home baby. In addition, the.Ignacia C. 20.12.2020 at 23:19
2016 ford focus owners manual pdf nissan pathfinder service manual pdfKelli W. 21.12.2020 at 17:24
If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus.VГ©ronique L. 25.12.2020 at 07:48
Thirty days to better english by norman lewis pdf study guide to epidemiology and biostatistics pdfTed H. 28.12.2020 at 03:06
Production of gametes and steroid hormones are the two major functions of the ovary. • Oogenesis - production of gametes. • Oocytes - developing gametes. • Ova.