Understanding the Male Reproductive System: A Comprehensive Overview

all right engineers in this video we're going to talk about the male reproductive system all right so let's

go ahead and look at this model here so if we first look off we're going to look at the testes now this part right here

is actually going to be the testes we'll take a look at its internal view in just a second but for right now this is the

external view of the testes okay it's consisting of What's called the seminiferous tubules now the semi nerous

tubules are basically where sperm production is occurring now on the top of the testes and kind of going

posterior and backwards we'll see another view of it in a second is the epidemis so b b is the epidemis and this

is where the sperm is actually going to be stored and matur until the ejaculation response then if you come

over here we're going to have this nice little like blood vessel connection here they call this blood vessel connection

they actually call it the pampiniform plexus it's actually made up of a lot of different types of blood vessels

arteries and veins and stuff like that okay now if we move upwards we're going to hit this structure here called the

vast deference now the vast Defence actually is going to move upwards and upwards and upwards and it's going to

move through this little tube here called the inguinal canal and it moves up through the inguinal Canal goes

posteriorly and it fuses with this structure here in the back so I'm going to turn it just a tad bit here so you

guys can see that view this right here you can see the actual vast deference it's going to come over here and it's

actually going to it's going to go into a dilated part called the ampula of the vast Defence and then the ampula of the

vast difference is going to fuse with a small little ejaculatory duct of the seminal vesicles so this structure right

here is called the seminal vesicles it's basically producing what's called seminol fluid okay which is basically

helping to be a component of the semen then the vast Defence and the seminal vesicles will join and they'll

form What's called the common ejaculatory duct which will move through the process GL and we'll see that in a

second now I'm going to come back into the anterior view for a second so we can take a look at this

again so now if you look here we're going to have the penis here right the actual the whole penis we have like the

root of it the shaft and then this this bottom part here the tip this part here the tip of the penis is called the

glands penis okay very very rich in a lot of different types of touch receptors and and uh very very sensitive

to tactile stimuli or touch stimuli okay so if you guys look here this is going to be you see this kind of like uh

silverish opaque is like tissue here it's actually going to be a nice little connective tissue core they actually

call the spat spermatic cord now what the spermatic cord consists of is it consists of the vast efference it's

going to consist of the blood vessels that testicular blood vessels it's also going to consist of some connective

tissue wrapping around it and then on top of that you're going to have that vast Defence so we had the vast Defence

we're going to have blood vessels we're going to have a connective tissue sheath and it's going to be running upwards and

there's also going to be some nerve fibers and a little bit of lymphatic vessels in that area too and it's going

to be running upwards surrounded by a connective tissue sheath called the spermatic cord now on the spermatic cord

you're going to have another muscle here you can kind of see it coming down in bands this is actually a skeletal muscle

it's actually called the creas muscle it's a muscle that elevates the testes it's actually arises from What's called

the internal oblique muscle which is an abdominal wall muscle then again if we follow it upwards we're going to see the

vast Defence kind of poking out of it so this right here is going to be the vast Defence the vast deference is going to

again move posteriorly and it's going to join with What's called the seminal vesicles let's turn this around for a

second here so if you look here you're going to see again vast Defence the vast Defence

will then join with a nice little plump uh structure here called the seminal vesicles and the seminal vesicles

produce seminal fluid that will combine with the actual vast Defence form the common ejaculatory duct that will move

through the prostate gland and into the prostatic urethra and we'll see that in a second here all right so now I'm going

to come back here anterior and again just to get a little bit orientation of anatomy this is going to be the bladder

right here so this is the superior surface of the bladder okay so another structure that we're going to look at

here is inside of the testes so if you look inside here you can actually see where the seminiferous tubules would be

and again they're going to have these little tubes called the tubulus rectus and then the epher duct tooles but what

happens is in the back here you're going to see C there before it goes into this kind of like part right here you're

actually going to have a part here which is going to be called you can see here B is the epidemis C is called the RIT

tesus these little tubes that actually push the epher duct tools back into the put in the sperm from the testes into

the epidemis and then if you have here here's the epidemis and the epidemis will actually connect with the vast

Defence and the vast eff will run upwards and then running with it again is going to be these blood vessels that

have some nerve fibers lymphatic vessels and wrapped in connective tissue which is called the spermatic cord like we saw

which runs upwards gives off that vast Defence which moves through the inguinal canal and supplies or combines with the

seminal vesicles to form the common ejaculatory duct all right guys so now let's take a look here if you look here

we're kind of looking at like a sagital section so we're slicing this bad boy down here I want to take a look here

inside of the testes because we looked outside of it now I want to look inside of it so if you look inside of the

testes you see this whole part right here kind of like this uh this weird color here

uh this part right here is going to be the testes okay so that's the testes that's where the seminiferous tubules

are okay that's where the seminiferous tubules are that's where the sperm is being produced now what happens is the

sperm is actually going to travel to another structure you can kind of see it here B it kind of like imagine like a

comma like I'm coming like this downwards so I make like a comma that's going to be the epidemis so the epidemis

is kind of like a comma shaped structure what happens is the seminiferous tubules produce sperm and that sperm is going to

track travel through vessels called like the tubulus rectus and the RIT tesus and epher ductules and they'll empty into

this structure here called the epidemis then what happens is whenever we want to ejaculate the epidemis will

actually push that sperm into this neck structure here D and D is called the vast Defence now the vast Defence we

already said will run upwards and what happens is it'll run up with these blood vessels here it'll run up with nerve

fibers lymphatic vessels wrapped in a connective tissue sheath which we call the uh spermatic cord then what happens

is it runs upwards right it'll come up through the inguinal canal and it'll go backwards and combine with that

structure that we already talked about called the seminal vesicles and it'll produce a structure whenever the seminal

vesicle combines with the vast difference it produces a structure right here it's really really faint this

little divot right here in the prostate gland that little divot there is actually called the common ejaculatory

duct okay so it's a tiny little divot there which is called the common ejaculatory

duct and that is the combination of the vast deference and a duct of the seminal vesicles that fuse together and run

through the prostate gland as the common ejaculatory duct then this is your prostate gland this is actually going to

be the bladder so this is the bladder right here and actually if you look at the muscular layers of the bladder is

actually going to be What's called the det trusser muscle which is a smooth muscle layer this is going to be the

mucosa of the bladder which is made up of uh transitional epithelial tissue which allows for the bladder to stretch

you're also going to have a little sphincter here a little smooth muscle sphincter right here called the internal

urethro sphincter and then inside here you're going to have ruge which is all these like kind of like this little like

um extensions here of the the transitional aelio tissue we also have another structure we'll talk about this

more later but there's actually another structure here called the trigone it's hard to see in this view but the trigone

is actually made up of three things one it's made up of one urer like for example this would be a gurer from the

right side so it's called A urer orifice which is just a hole where the urer empties the urine in and if you would

imagine the left side you can't see there but the left side there'd be another uror orifice which is emptying

the urine into the bladder mucosa all right or the cavity Lumin then you're going to have the urethra the urethra

and it kind of like the internal urethra shink through here constricts it and makes it really tight and forms kind of

like a triangular structure called the trigone okay so the trigone is made up of the urer orifices both of them and

the urethra and the intern urethra shter constricts the urethra to make it look like a triangle all right cool uh just a

little bit more Anatomy here this is your pubic SYM this is actually the pubic symphysis is and now let's keep

coming down here if we keep coming down here here's the common ejaculatory duct the common ejaculatory duct will

actually combine with this urethra right here it'll empty the sperm and the semen into the urethra right here this urethra

because it's running through the prostate gland is actually called the prostatic urethra all right then here's

where it gets a little weird here a little dicey in here if you can see you can see the skeletal muscle right here

and it comes all the way over to this side too this is making up what's called the urogenital diaphragm so the

urogenital diaphragm is made up of this muscle that moves all the way across here there's two muscles that make it up

one is called the Deep transverse penus and the other one is a really really important one which is going to be kind

of right in here here it's called the external urethal schiner why is that important because the external urethal

schiner is under sematic control so whenever we have to urinate we actually have voluntary control over that muscle

so that we don't you know pee in our pants all right so again that's going to be the urogenital diaphragm now if you

remember we said that this is the prostatic urethra this right here is the urogenital diaphragm once the semen or

the urine flows through this space right here where the urogenital diaphragm is this is now called the membranous

urethra so prostatic urethra is the urethra that's running within the prostate gland the other urethra within

the Mal is where the urogenital diaphragm is that's going to be called the membranous urethra very very small

urethra oo another thing there's a little gland in here a little gland back here that squirts a little bit of um

basically kind of like a alkaline mucus that lubricates the gland's penis and actually helps to neutralize the acidic

tract of the urethra it's called the bulbo urethal glands or you can also call the cowers glands and again they

produce kind of like an alkaline mucus pre-ejaculation that actually is going to neutralize the acidic tract of the

actual penal urethra and lubricate the gland's penis so what it's called the Calpers gland so we got prostatic

urethra membranous urethra then once we go past the urogenital diaphragm we enter into this really really long

urethal all all the way down here which is called the spongy or penile urethra okay so spongy or penile urethra is

going from here all the way down here now there's some erectile tissue they call it spongy or penile urethra spongy

is because it consists of like a spongy connective tissue surrounding it and it's basically called erectile tissue so

there's two types of erectile tissue this one right here that you're going to see is like uh all this part here it's

kind of like the darker purple that is actually going to be called the and you can see here it's consist What's called

the Corpus spongiosum so the Corpus spongiosum is actually going to be this actual darker purple erectile tissue and

what the Corpus spongiosum does is it actually kind of keeps the urethra open during the ejaculatory response then if

you look here you're going to have another type of erectile tissue right here and then right here all 67

basically all this part here that kind of like um like a babyish blue color right there that part right there that's

actually called called the Corpus cavernosum and the Corpus cavernosum whenever this guy contracts basically

he'll expand so the erectile tissue is rich in blood vessels and whenever it's innervated due to some type of tactile

stimuli or parasympathetic nervous system it'll cause the actual erectile tissue to get filled with blood which

will compress the actual veins that are trying to drain the blood and help to be able to maintain the engorgement of the

penis during the erectile response okay so he's helping to be able to uh engorge the penis with blood and prevent any

blood from actually leaking out of the penis all right or out of the actual veins from the penis okay so we got

sponger Peno urethra sweet deal let's do a couple more structures here and then we're going to be done if you look in

the posterior aspect here just to get a little bit more Anatomy here this is actually going to be the uh you know

your rectum so you're going to have your rectum here and then the rectum will lead into What's called the anal Canal

now in the anal Canal you're going to have these little grooves here called the anal sinuses not that important but

just thought i' mention it there but there's two muscles that are really important this one right here is 85 kind

of like the inner layer here inner layer here 85 is going to be a specific type of muscle that's lining the um anal

canal and this is called the internal anal sphincter okay so 85 is called the internal anal sphincter it's under

involuntary control so whenever we got to go poo poo this guy is going to say uh-uh I ain't doing it if the if the

parasympathetic nervous system activates me got to to go 84 he's very nice with us right so 84 he's actually very um

accommodating he's called the external anal sphincter so whenever you got to go drop that bomb what happens is this guy

you have voluntary control over him so whenever you really got to go uh blast that guy out what happens is this guy

you're going to have voluntary control over so you can determine if the time is appropriate to do that if not then he

will con stay constricted but then if it is time to go to the bathroom and you have to go restock the lake with brown

trout then this guy is going to go ahead and if it's under voluntary control you can go ahead and actually relax this guy

and you'll actually Evacuate the bowels all right all right so we covered a decent amount of structures here for the

male reproductive system I hope it all made sense I hope you guys did enjoy it if you guys did please hit the like

button comment down in the comment section and please subscribe as always ninja NS until next time