The Parts of a Males Sexual Anatomy

Penis
The penis is a man’s reproductive and sex organ. It is formed of three columns of spongy tissue — the corpus spongiosum and two corpora cavernosa — that fill with blood during sexual excitement, causing an erection (“hard on”). The penis extends from the lower portion of the belly. It is made up of a shaft and a glans (also known as the head) and is very sensitive to the touch. A man’s urethra is enclosed in his penis. It carries urine, pre-ejaculate, and semen out of his body.

Shaft
The shaft looks like a tube. The shaft of the penis is about 1–3 inches long when soft. During an erection, the shaft expands to generally reach 4–6 inches.

Corpora Cavernosa (two spongy cylinders on either side of the penis)

Function:

  • These fill with blood to make the cock erect. It stay’s erect as the blood is trapped within it – you can also keep these spongy bodies filled by using a cock-ring which traps the blood so you don’t lose an erection.
  • Features:
  • They are two spongy bodies of erectile tissue on either side of the top of the penis, which fill with blood and make it erect. The blood is temporarily trapped in there by the tightening of blood vessels that would normally allow it out.

Feeling:

None, most of the nerves are in the head & foreskin. If you need to use Caverject (ED injectable medication) any pain is extremely minimal.

HIV transmission role:

None.

Sex Tips

None

Corpus Spongiosum (cylindrical erectile tissue at the base of your penis shaft)

Function:

  • Erectile tissue through which the urethra passes Runs along the base of the penis. It thickens and forms a ‘root’ or ‘bulb’ that is attached to a thick fibrous membrane which gives it stability and is surrounded by a pelvic floor muscle (Bulbospongiosus) that contracts rhythmically during cumming. At the other end it grows to form the glans. It contains erectile tissue that swells in a similar manner to the Corpora Cavernosa during erection, although it does not become as enlarged as it contains more fibrous tissue and has less spaces to fill. Unlike the Corpora Cavernosa it maintains a blood supply during erection. The urethra responds to being rubbed and this is one of the best places to rub it. None. Gently rubbing your finger tips or the side of your thumb along the ridge of his corona – great feeling.

Root of penis

Function:

  • Anchors the penis deep in the body.
  • When you’ve got an erection, the engorgement of the root helps stop the flow of urine from your bladder.

Features:

  • Bulb-like end of your penis.
  • Only a proportion of your penis root is actually visible

Feeling:

  • Supplied with nerve endings responsive to pressure, so responds well to being rubbed externally and internally.

HIV transmission role:

  • None.

Sex Tips:

  • Apply gentle rubbing pressure to his erection right at the base – the point at where his penis meets his sphincters.
  • Insert a well-lubed finger into his anus and just inside towards the front try massaging the base of his cock through the wall.

Glans

The glans is the soft and highly sensitive Head (knob) of the penis

Corona (the ridge around the glans):

Function:

  • Its shape puts the nerves that give you pleasure in the best place to be stimulated, while at the same time being useful for pleasuring a partner.

Features:

  • Will usually have benign bumps called ‘pearly penile papules’ attached to it.

Feeling:

  • It contains nerve endings which transmit pleasurable sensations from stroking & vibration, but they don’t respond at all to steady pressure.

HIV Role:

  • The whole of the glans including the corona, is a mucous membrane and have the absorption properties necessary for exposure and transmission.

Sex Tips:

  • Gently rubbing your finger tips or the side of your thumb along the ridge of his corona – brings pleasure.

Opening of the Urethra

The opening of the urethra is located at the tip of the penis. This is where pre-ejaculate, semen, and urine leave the body.

Some men enjoy a sexual activity called ‘sounding’. ‘Sounding’ is where a person inserts a rod/needle-type object down the eye of the urethra, which brings a heightened sensation when orgasming.

HIV Role:

  • The urethra can be an entry point for HIV transmission, especially if damaged. The whole of the glans including the corona, is a mucous membrane and have the absorption properties necessary for exposure and transmission.

Foreskin

The foreskin is a retractable tube of skin that covers and protects the head (glans). Some men have had their foreskin removed by circumcision during infancy. Some choose or need to be circumcised later in life. The foreskin;

  • Stores pheromones & releases them when you are erect. It also stores & releases natural lubricants, which mix with dead skin cells to make smegma. The inner surface is a mucous membrane.
  • Has the most nerve endings in the penis, more even than the glans. A ridged band of skin and a group of skin/nerve cells (Meissner’s corpuscles) are sensitive to vibration & touch, and send pleasure signals in a similar way to those in your fingertips.

HIV Role:

  • The interior of the foreskin is a mucous membrane, and has the absorption qualities necessary for HIV exposure and transmission to occur.

Sex Tips:

  • The foreskin has many nerve endings so take some time to stroke, lick and play with the foreskin where it’s present.

Features:

  • The bulb-like ending of the Corpus Spongiosum. Smooth skinned, the glans is covered with a mucous membrane and deepens in colour as orgasm approaches.

HIV Role:

  • The whole of the glans is a mucous membrane and have the absorption properties necessary for exposure and transmission.

Sex Tips:

  • As the Glans responds to being enclosed, you can hold it in the palm of your hand and close it gently over it, squeezing slowly. It also works well when it is receiving oral sex, clamping it with your tongue and the roof of your mouth.

Frenulum

The frenulum is where the foreskin attaches to the underside of the penis just below the glans. Usually, a portion of it remains after circumcision.

Features:

  • Underneath the glans, it stretches when the penis becomes erect and becomes highly sensitised.

Feeling:

  • Very sensitive when stretched during a hard on (it’s know to the French as the ‘sex nerve’) – it responds well to stroking & vibration.

HIV Role:

  • None.

Sex Tips:

  • The French call it the sex nerve for a reason; try flicking the tip of your tongue across the frenulum for those bonus sensations.

Scrotum

The scrotum is a sack of skin divided into two parts, enclosing the internal reproductive organs: the testicles.

Its purpose is for holding the testicles outside the body to enable the best production of sperm (at 2 degrees lower than normal body temperature).

Features:

  • Basically a pouch of skin hanging beneath the root of the penis contains the testicles. This skin is thin and usually darker than the other skin on the body. The scrotum contains smooth muscle fibres that contract in response to cold & exercise, drawing the balls closer to the body. This is a natural protective mechanism, but this also happens in the last stages of sex just as you are getting ready to orgasm.

Feeling:

  • The skin & muscle of the scrotum have a good supply of blood & nerves that respond well to touch, vibration & temperature changes.

HIV Role:

  • None, unless the skin is broken and body fluid such as semen gets into the open wound. Be careful if you shave or pluck the hairs from your scrotum as any wounds can be a source of HIV transmission.

Sex Tips:

  • Lick and massage the scrotum with your mouth (without teeth) and where it joins onto the crutch.
  • Suck the scrotum and one testicle at a time, slightly pulling down. The warm sensation and slight pressure can be very stimulating. A good communication should be held with the person prior to ‘ball-play’ to ensure that they find it stimulating or else you risk turning the person right off sex.

Testicles

Testicles have 2 main functions:

– They make male hormones (androgen’s) such as testosterone.

– They make sperm, the male cells needed to fertilize a female egg cell to start a pregnancy.

Features:

  • The testicles are held in a pouch of skin hanging beneath the root of the penis called the scrotum (or ‘ball bag’).
  • The testicles are oval shape and it is not unusual for one to be larger than the other.
  • Testicles continually rotate in the scrotum as a way of keeping the sperm at the right temperature.
  • The testicles are joined to the seminal vesicle by the Vas Deferens. Where this joins is where lumps usually appear in a person who has testicular cancer. A regular check should explore the testicle where the vas deferens joins at the top.

Feeling:

  • The testicles can be extremely sensitive and painful if knocked hard. However, some men find it extremely stimulating if their testicles are pulled and squeezed firmly, through too hard.
  • Some men enjoy having their testicles sucked and licked (through the scrotum). A heat or cool sensation can be psychologically stimulating.

HIV Role:

  • None. (asides from being involved in the process of making semen which does contain infectious quantities of HIV)

Seminiferous Tubules & Interstitial Tissue (tissue of your balls)

Function:

  • To produce sperm and testosterone

Features:

  • The Seminiferous Tubules are small hollow, fluid filled tubes filled with developing sperm cells that also produce a fluid that supplies the sperm with the nutrients & hormones they need to develop.
  • As well as the only blood and nerve supply in the balls, the Interstitial Tissue contains special cells (Leydig Cells) that produce testosterone.

Feeling:

  • None in the Seminiferous Tubules, but the Interstitial Tissue has very sensitive nerve endings that respond to pain, pressure, heat & cold. Function:

Seminal Vesicle

  • To supply about 55% of the seminal fluid

Features:

  • Two finger length glands at the end of the Vas Deferens and next to/on top of the Prostate Gland that produce a fluid that is known as ‘sperm fuel’ as it activates the sperm and feeds it with fructose (a natural sugar).

During ejaculation, sperm cells are carried from the epididymis through the vas deferens to seminal vesicles, where they mix with fluids made by the vesicles, prostate gland, and other glands to form semen. This fluid then enters the urethra, the tube in the center of the penis through which both urine and semen leave the body.

Sperm cells are made in long, thread-like tubes inside the testicles called seminiferous tubules. They are then stored in a small coiled tube behind each testicle called the epididymis, where they mature.

Epididymus & Vas Deferens

Function:

  • To mature & carry the sperm to the Urethra

Features:

  • The Epididymis is an extensively coiled tubular organ attached to the rear & side surface of the testis. Uncoiled it would be about 5-6 m (about 17ft) long. It takes about two weeks for the sperm to journey through the Epididymis maturing and learning to swim as they go.
  • The Vas Deferens is a tube surrounded with smooth muscle that pumps the sperm from the tail of the Epididymis to the Urethra. There are two Vas Deferens. One from the right and one from the left testicle, both are about 40cms (18 inches) long.

Cowper‟s Glands

Function:

  • To produce pre-cum, an alkaline fluid that prepares the urethra for semen. All men produce pre-cum (whether you know it or not) as an acidic environment can damage sperm – and urine can make the Urethra acidic.

Features:

  • Two pea sized glands situated under the Prostate Gland that feed into the Urethra, producing about 5 – 7% of the seminal fluid, usually known as pre-cum.

Feeling:

  • The glands begin to produce fluid when you get sexually aroused.

HIV Role:

  • None.

Sex Tips:

  • None

Prostate Gland:

Function:

  • Produces an alkaline fluid that neutralises acidic urethral and vaginal conditions.
  • Also squeezes shut the connection from the bladder to the Urethra to stop urine leaking into the semen.
  • Its main function is the production of fluids that are added to the seminal fluid (cum). It’s estimated that 40% of the fluid released when cumming comes from the Prostate Gland.

Features:

  • Usually described as a doughnut that surrounds the urethra, it is walnut sized in young men, getting bigger as you get older. This growth is dependent on the amount of testosterone you produce.
  • The Prostate Gland is normally rubbery, pliable, and smooth, and is made up of thousands of tiny fluid-producing glands interspersed within its blood vessels and muscular framework.

Feeling:

From the outside:

The perineum is firmer near the front of the penile bulb, which is the inner ending of the shaft.

It feels softer and fleshier toward the back. This is the area you’re aiming for.

You may not be able to actually feel the gland, but touching it will likely cause the sensation of needing to pee but this feeling is also extremely stimulating.

From the inside:

  • It feels like a fleshy bulb of tissue on the front wall of the rectal lining. It’ll feel different from the other tissue in there.
  • The prostate is a walnut-sized gland located between the bladder and the penis. The prostate is located behind the anal wall in the direction of your belly button (two to four inches from the sphincter).

Sex tips:

Some men can achieve orgasm through stimulation of the prostate gland, such as prostate massage or receptive anal intercourse, and men who report the sensation of prostate stimulation often give descriptions similar to females’ accounts of G-spot stimulation. Prostate stimulation can produce a stronger, more powerful orgasm when rubbed.

It is possible for a man to reach orgasm through massaging the prostate, without having his penis touched. This is known as an internal orgasm, which many men describe as the ‘holy grail’ of male orgasms.

Techniques to try

You will need to communicate with your partner and experiment with speed and pressure to find what feels best for him personally. Here are some techniques to try, whether you’re using fingers or toys.

With your fingers

Gently insert your lubed index finger into the anus and curl your finger upward in a “come here” motion toward the belly button. Keep repeating the motion while gradually increasing your speed as the pleasure builds.

The Doorbell: Rest the pad of your finger against the outside of the prostate and gently press as you would to ring a doorbell. Mix it up by using different pressure or holding the press for shorter and longer intervals to find what works. You can use the doorbell technique when penetrating the anus, too.

Circling: Use the pad of your finger and run it all around the prostate, circling your way around the entire perimeter of the gland. Change up the pressure and speed and continue with the combo that feels best, allowing the pleasure to build up.

Simulated vibration: Any move that feels good can be sped up to the point of feeling like a vibrator. This can be a little hard on the wrist after a while, so it’s best to save this kind of speed for when orgasm is close.

With a massager, strap-on, or other sex toy

If you’re playing with sex toys, you can really mix it up by playing with the different types of toys such as a vibrator, dildo or you can get toys that are specifically designed to stimulate the prostate.

  • Pressure: Controlling pressure when using a toy is easier, especially when you’re playing solo. Try pressing the toy against the prostate using more or less pressure till you find your sweet spot.
  • Depth. Depth is another area where toys win out since reaching can make it hard to go deep, if that’s what you crave. Try different sized anal toys or get a longer one that you can insert as deep as your bottom desires.

The information above has been adapted from:
www.plannedparenthood.org/learn/sexuality/reproductive-sexual-anatomy

Nipples:

Essentially, men have nipples because nipples are part of the basic human design option at conception. While modern societies may view nipples as secondary sexual organs, in reality a foetus of either sex develops nipples within a few weeks of conception.

The human foetus actually develops several sets of nipples, much like other mammals, but only one set will fully mature in the womb. At this point in a foetus’ development, there is no genetic difference between male or female. All foetuses develop nipples, chest muscles and milk glands.

Feeling:

Nipples have the ability of being erogenous zones for men and work in the same was as they do for women. And while male nipples are basically the same as female nipples, however they can be even more sensitive since guys aren’t used to having them touched as often.

Sex tips:

Men can find it extremely stimulating having their nipples pinched and sucked. It is always best to communicate first to discover what turns the person on but if they inform you that they enjoy their nipples played with hard, then they will find this activity personally stimulating.

In most cases the more that a man’s nipples are played with the more resilient they will become to sensitivity of pain.