Male Sex Organs And The 3 Es

Front 1

2 main functions of the testes

Back 1

produce testosterone - Interstitial cells of leydig

Produce haploid sperm(spermatogenesis) - Seminiferous tubules

Front 2

When in development does testosterone start, drop off, and then pick back up?

Back 2

Testosterone production begins during fetal development, drops off during early childhood, and then picks back up during puberty.

Front 3

When in fetal development does the decent of the testes occur and what stimulates them to decend?

Back 3

The decent of the testes is stimulated by testosterone during the 7th month of development.

Front 4

What is the fibromuscular cord aides the decent of the testes from the ABD to the scrotum?

Back 4

The Gubernaculum

Front 5

What anchors the testes to the scrotum?

Back 5

The Gubernaculum

Front 6

What is the term for failure of the testes to decend?

Back 6

Cryptorchidism

Front 7

What are the Secondary Male Sex Organs?

Back 7

Epididymis

Vas deferens

ejaculatory duct

urethra

Scrotum (exterior)

Penis(exterior)

Front 8

Epididymis

Back 8

A Comma shaped organ located on the top and posterior of each teste

divided into the head body and tail

Front 9

Function of the Epididymis

Back 9

1- stores several million sperm for months

2- it is where sperm mature and become better swimmers

3- Secretes Glucose to feed sperm

4- has cells that phagocytize old sperm

Front 10

Vas Deferens

Back 10

18" tube that transports sperm to the ejaculatory duct by peristalsis

Front 11

What is contained in the spermatic cord?

Back 11

The vas deferens

Testicular artery

Testicular vein

Nerves

lymphatic vessels

Cremaster muscle

(all held by DCT)

Front 12

Ejaculatory Duct (2)

Back 12

2 1" tubes that form when the vas deference meets the seminal vesicles

- they pass through the prostate and unite with the prostatic urethra.

Front 13

Urethra

Back 13

8" tube that runs through the prostate and penis to the outside

Front 14

3 regions of the urethra

Back 14

Prostatic

Membranous (shortest)

Spongy (longest)

Front 15

Functions of the urethra

Back 15

1- transport urine to the outside

2- transport semen to the outside

Front 16

Scrotum

Back 16

Pouch of skin and subcutaneous layer on ventral side of the base of the penis and anteror to the anus

- contains a layer of smooth muscle called the dartos muscle

Front 17

What divides the scrotum into 2 parts?

Back 17

the Median Septum

Front 18

Function of the Scrotum?

Back 18

Support, protection, and temperature regulation of the testes.

Front 19

What muscles contract in response to cold and sexual stimulus to pull the testes closer to the body?

Back 19

The Cremaster muscle and the Dartos muscle.

Front 20

Penis

Back 20

Cylindrical shaped male organ of copulation

-conveys urine and semen to the outside through the urethra.

Front 21

3 regions of the penis

Back 21

Body(shaft), Root, and Glans penis

Front 22

Body of the penis

Back 22

composed of 3 columns of erectile tissue.

Corpora cavernosa - two dorsal columns surrounded by the tunica albuginea.

Corpus spongiosum - single ventral column surrounding the urethra.

Front 23

Erectile tissue

Back 23

Vascular spaces surrounded by DCT that becomes engorged with blood.

Front 24

Root of the penis

Back 24

The proximal region surrounded by the bulbospongiosus muscle (skeletal muscle)

Front 25

Glans Penis

Back 25

Acorn shaped distal end of the penis.

Front 26

Margin of the glans penis is called....

Back 26

The Corona

Front 27

Prepuce

Back 27

Loose skin that encloses the glans penis and is only attached on the ventral side by the frenulum.

Front 28

The prepuce is usually removed by ________ to allow for easier cleaning of smegma.

Back 28

Circumcision

Front 29

composition ofSmegma

Back 29

Dead skin

Oil secretions

Bacteria

any other accumulations.

Front 30

The 3 Es of male physiology

Back 30

Erection - Parasympathetic

Emission - Sympathetic

Ejaculation - both parasympathetic and sympathetic

Front 31

Erection

Back 31

Under parasympathetic innervation smooth muscle relaxes causing arteries to dialate. Large quantities of blood collect in the erectile tissue and the veins are compressed, more blood is entering than leaving causing the penis to become wider, longer, and firmer.

Front 32

Emission

Back 32

Sympathetic innervation causes peristalsis of the epididymis, vas deferens, seminal vesicles, cowpers glands, and prostate pushing semen into the urethra.

Front 33

Ejaculation

Back 33

sympathetic and parasympathetic innervation forces semen out of the external urethral orifice in a series of spurts.

Front 34

Parasympathetic impulses of ejaculation

Back 34

Causes rhythmic contraction of the the bulbospongiosus muscle a the base of the penis.

Front 35

Sympathetic impulses of ejaculation

Back 35

causes peristalsis of the smooth muscle muscularis of the spongy urethra.

Front 36

Male Accessory sex glands

Back 36

Seminal Vesicles

Prostate

Cowpers Glands

Front 37

Seminal vesicles

Back 37

paired glands located on the posterior base of the urinary bladder Produces 60% of semen

Front 38

Prostate

Back 38

Chestnut shaped gland inferior to the urinary bladder that surrounds the 1st region of the urethra. produces 25% of semen

Front 39

Cowpers gland

Back 39

(bulbourethral glands) Paired pea shaped glands inferior to the prostate on each side of the membranous urethra (mainly secretes mucous for lubrication and protect semen from acidic vagina)

Front 40

4 sources of semen

Back 40

Testes, Seminal vessicles, Prostate, and cowpers gland.

Front 41

Composition of Semen

Back 41

-~300 million sperm

-mucus-alkaline

-Seminal Plasmin - Antibiotic

-Fructose - SPERM FOOD!!!!!

-Prostaglandins - Stimulate reverse peristalsis of uterus.