Reproductive System - Male Overview
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The Male reproductive system consists of specialized organs who produce a new organism. The This chapter should be cited as: Lints R. and Hall D.H. Male This chapter should be cited as: Lints, R. and Hall, D.H. Male reproductive system, germ line. How common is vasectomy reversal? Each year about. Find out the functions of the testes, prostate gland, sperm duct and urethra, as well as where they are located in the male body. Male Reproductive System – Learn all about male reproductive organs and surrounding body parts using interactive human anatomy pictures and definitions . The spermatic cords contain the ductus deferens along with nerves, veins, arteries, and lymphatic vessels that support the function of the testes. The ductus .
As a member, you'll also get unlimited access to over 70, lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed. Log in or sign up to add this lesson to a Custom Course. Login or Sign up. Heather has taught reproductive biology and has researched neuro, repro and endocrinology.
When I ask you what makes men and women different, what is the first thing that comes to mind? Well, one of the more obvious answers is they look different.
Male Reproductive System - Explore Anatomy with Detailed Pictures
What do I mean by that? Well, males have a penis on the outside and women don't, right? And while that is correct, there is a Picture Of Male Reproductive System Parts And Functions bit more to that answer. Sure, males and females differ on the outside, but what about on the inside?
In this lesson, you will learn about what internal structures make a male different from a female. First, I want to address the purpose of these uniquely male structures. Why do males have testes and other structures that aren't present in females?
Well, one of the instinctual drives in all species is to reproduce - to pass on their genes to future generations. To do this, they have to have a way of packaging, storing source passing on their DNA to those offspring.
They do this by producing cells called gametes - haploid germ cells of males and females. Gametes are produced during meiosis and contain half of the parental chromosome. Now, each gender is going to produce its own gamete with only half of its genetic material.
In females, they are called eggs, and in males, they are called sperm. During reproduction, the male gamete combines with the female gamete to produce offspring that has half the DNA of the mom and half the DNA of the dad, giving it its own unique and complete set of DNA.
In this lesson, we will focus on the male and the structures used in getting his gamete, sperm, ready for reproduction. The sperm of the male is produced and transported in structures completely different from those found in the female. So what are these structures? Well, first and foremost we have the testesor testis singular. The testes are paired structures in the male whose function is to produce sperm.
Inside each testicle are many tube-like structures where sperm continue reading produced.
Each gland secretes fluids that will nourish and protect sperm as it passes through the male reproductive tract. Email already in use. Circumcision is usually done during a baby boy's first few days of life. Your goal is required.
Once ready, sperm are transported to ducts at the top of the testes that connect to the next structure, called the epididymis. Now, sperm production is just the first step - the sperm that leave the testes are not yet fully mature. They're almost there but not fully. That is the function of the next structure, called the epididymis. The epididymis is located on top of each testicle and has two main functions: Amazingly, the epididymis is a coiled here that, if unwound, would measure about 23 feet!
This 23 feet of coiled tube can be divided into 3 parts: The head of the epididymis is closest to the top of the testes and accepts the immature sperm that is leaving the testes. Once inside the epididymis, the sperm maturation process starts.
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This process takes about 2 weeks as sperm move from the head, down through the body and into the tail where they are stored source needed. Now, as you look the epididymis, you will notice that both the testes and the epididymis lie outside the main body cavity of the male. Therefore, they need some way to stay connected with the body.
This is where our next structure comes in. Each epididymis connects to a larger tube called the ductus deferensalso known as the vas deferens, which travels from the epididymis up into the body of the male. Now, running alongside the ductus deferens are arteries and veins, and together these make up paired structures called spermatic cords. It is these cords that connect the testes and the epididymis to the body. Without these connections, there would be no flow of blood, sperm and other fluids to and from the testes.
In addition to connecting the epididymis to the body, the ductus deferens both stores and transports sperm from the epididymis to the ejaculatory duct, which you will learn about later.
It's kind of like the on-ramp of a highway - it connects the epididymis to the ejaculatory duct, which in turn, merges with the urethra, providing a passageway for sperm to exit the body.
The ductus deferens begins here, at the tail of the Picture Of Male Reproductive System Parts And Functions. It then travels up into the abdominal cavity, wraps around the urinary bladder and then curves back down to start its descent behind or posterior to the bladder. As it begins its descent, it expands into a portion called the ampulla. The ampulla is part of the ductus deferens and is where most of the sperm is going to be stored until needed.
How Does the Male Reproductive System Function?
Now you may be asking, why do sperm need to be stored? Why not just make them when they are needed? Well, you see this process of making and maturing sperm actually takes a while, around months. So it wouldn't be very practical to make the sperm as needed, would it? That's why males have developed places along their reproductive tract to store the sperm that are ready. Well, ready for reproduction! That is where our next set of structures comes in. The ampulla joins with ducts from the first set accessory glands to create the ejaculatory duct.
The accessory glands, including the seminal vesicles and the prostate gland, provide fluids that lubricate the duct system and nourish the sperm. The first accessory glands along our conveyor belt are paired seminal vesicles. To do this, they have to have a way of packaging, storing and passing on their DNA to those offspring. During development these testicles migrate from inside the pelvic area to just outside of it, dropping into the scrotal sac or scrotum. Ductus deferens transports the sperm from the epididymus, through the accessory glands and out the urethral opening.
Now click here, sperm are stored in the ampulla, so they don't enter the ejaculatory duct until the male engages in sexual activity. Both the ejaculatory duct and the urethra pass by three accessory glands. Each gland secretes fluids that will nourish and protect sperm as it passes through the male reproductive tract.
You can see here that compared to the ductus deferens, the ejaculatory duct is relatively short. That's because once it passes the first set of accessory glands and enters the second gland, it combines with the urethra. The urethra then passes the third accessory gland and continues to the urethral orifice, which opens at the tip of the penis to the outside of the body.
Like our other structures, the urethra also has two functions. The first is non-reproductive, and that's the transportation of urine from the bladder.
The second is reproductive - that's the transportation of sperm and fluids from the accessory glands, which together are called semen. So there you have it - the internal reproductive anatomy of the male. The testes pass along immature sperm to the epididymis. The epididymis matures the sperm and passes it along to the ductus deferens. The ductus deferens store the sperm in the ampulla and transport it into the ejaculatory duct.
The ejaculatory duct merges into the urethrawhich exits at the tip of the penis. Together these structures produce, store and transport sperm from the testes to the outside of the body. To demonstrate how important these structures are, think about what would happen if the testes were damaged? Or what about the epididymis?
Both of these would affect sperm production. You see, each of the structures works together with the others to help males of all species reproduce, to help them pass along their Picture Of Male Reproductive System Parts And Functions to their offspring. To unlock this lesson you must be a Study. Did you know… We have over 95 college courses that prepare you to earn credit by exam that is accepted by over 2, colleges and universities. You can test out of the first two this web page of college and save thousands off your degree.
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Find out in this lesson that explores the inner workings of the male reproductive system and the pathway that sperm takes. Are you a teacher? An error occurred trying to load this video. Try refreshing the page, or contact customer support. You must create an account to continue watching. Register for a free trial Are you a student or a teacher? I am a student I am a teacher.
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