Anatomy And Physiology Of Male Reproductive System Pdf


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15.05.2021 at 14:01
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anatomy and physiology of male reproductive system pdf

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The major function of the reproductive system is to ensure survival of the species. Other systems in the body, such as the endocrine and urinary systems, work continuously to maintain homeostasis for survival of the individual.

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Male Reproductive System

The male reproductive system includes the scrotum, testes, spermatic ducts, sex glands, and penis. These organs work together to produce sperm, the male gamete, and the other components of semen. These reproductive organs also work together to deliver semen out of the body and into the vagina where it can fertilize egg cells to produce offspring. The scrotum is a sac-like organ made of skin and muscles that houses the testes. It is located inferior to the penis in the pubic region.

Unique for its role in human reproduction, a gamete is a specialized sex cell carrying 23 chromosomes—one half the number in body cells. At fertilization, the chromosomes in one male gamete, called a sperm or spermatozoon , combine with the chromosomes in one female gamete, called an oocyte. The paired testes are a crucial component in this process, as they produce both sperm and androgens, the hormones that support male reproductive physiology. In humans, the most important male androgen is testosterone. Several accessory organs and ducts aid the process of sperm maturation and transport the sperm and other seminal components to the penis, which delivers sperm to the female reproductive tract. In this section, we examine each of these different structures, and discuss the process of sperm production and transport. It continues internally to make up the scrotal septum, a wall that divides the scrotum into two compartments, each housing one testis.

These organs do the following jobs within your body:. The male reproductive system is made up of internal inside your body and external outside your body parts. Together, these organs help you urinate rid your body of liquid waste materials , have sexual intercourse and make children. Most of the male reproductive system is located outside of your abdominal cavity or pelvis. The external parts of the male reproductive system include the penis, the scrotum and the testicles. The opening of the urethra — the tube that transports both semen and urine out of the body — is located at the tip of the glans penis. The penis also contains many sensitive nerve endings.

Introduction to the Reproductive System

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. These tracts comprise the fallopian tubes , the uterus , the vagina , and associated structures in females and the penis , the sperm channels epididymis, ductus deferens , and ejaculatory ducts , and other related structures and glands in males.

The male reproductive system consists of a number of sex organs that play a role in the process of human reproduction. These organs are located on the outside of the body and within the pelvis. The main male sex organs are the penis and the testicles which produce semen and sperm , which, as part of sexual intercourse , fertilize an ovum in the female's body; the fertilized ovum zygote develops into a fetus , which is later born as an infant. The corresponding system in females is the female reproductive system. The penis is the male intromittent organ. It has a long shaft and an enlarged bulbous-shaped tip called the glans penis , which supports and is protected by the foreskin.

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. Please consult the latest official manual style if you have any questions regarding the format accuracy. Describe the physiologic functions of the principal components of the male reproductive system. Describe the endocrine regulation of testicular function by gonadotropin-releasing hormone, follicle-stimulating hormone, luteinizing hormone, testosterone, and inhibin. Identify the cell of origin for testosterone, its biosynthesis, mechanism of transport within the blood, metabolism, and clearance.

Male Reproductive System

 Я должен был знать. Да взять хотя бы его электронное имя.  - Боже мой, Северная Дакота.

Его густые волосы имели натуральный песочный оттенок, а глаза отливали яркой голубизной, которая только усиливалась слегка тонированными контактными линзами. Оглядывая свой роскошно меблированный кабинет, он думал о том, что достиг потолка в структуре АНБ. Его кабинет находился на девятом этаже - в так называемом Коридоре красного дерева. Кабинет номер 9А197.

Очень жаль, если она истратит свой превосходный генетический заряд, произведя потомство от этого выродка, - а ведь могла бы предпочесть его, Грега. У нас были бы красивые дети, - подумал. - Чем ты занята? - спросил Хейл, пробуя иной подход. Сьюзан ничего не ответила.

 Спутница? - бессмысленно повторил Беккер.

Anatomy and physiology of the male reproductive system

Еще. На пальцах ничего. Резким движением Халохот развернул безжизненное тело и вскрикнул от ужаса. Перед ним был не Дэвид Беккер. Рафаэль де ла Маза, банкир из пригорода Севильи, скончался почти мгновенно. Рука его все еще сжимала пачку банкнот, пятьдесят тысяч песет, которые какой-то сумасшедший американец заплатил ему за дешевый черный пиджак.

Последний щит угрожающе таял. Сьюзан и Соши занялись поисками во Всемирной паутине. - Лаборатория вне закона? - спросила Сьюзан.

Необходимость убрать пробелы показалась ей странной. Это была мелочь, но все же изъян, отсутствие чистоты - не этого она ожидала от Танкадо, наносящего свой коронный удар. - Тут что-то не так, - наконец сказала.  - Не думаю, что это ключ. Фонтейн глубоко вздохнул. Его темные глаза выжидающе смотрели на Сьюзан.


Introduction to Anatomy & Physiology: Reproductive System; Ziser Lecture Notes, 2 primary reproductive organ of male has dual function a. hormone.


Male reproductive system

На следующее утро, придя пораньше, он подменил чужую клавиатуру на свою, модифицированную, а в конце дня вновь поменял их местами и просмотрел информацию, записанную чипом. И хотя в обычных обстоятельствах пришлось бы проверять миллионы вариантов, обнаружить личный код оказалось довольно просто: приступая к работе, криптограф первым делом вводил пароль, отпирающий терминал. Поэтому от Хейла не потребовалось вообще никаких усилий: личные коды соответствовали первым пяти ударам по клавиатуре. Какая ирония, думал он, глядя в монитор Сьюзан. Хейл похитил пароли просто так, ради забавы.

Пользуются ли писсуаром в дамском туалете -неважно, главное, что сэкономили на лишней кабинке. Беккер с отвращением оглядел комнату. Грязь, в раковине мутная коричневатая вода.

1 Comments

Martrentlisbi
25.05.2021 at 02:08 - Reply

Age brings about changes to the male and female reproductive systems that lead to loss of fertility and the physical and psychological symptoms of the menopause and andropause.

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