Male reproductive system Chapter 28
What is the volume of semen ejaculated
2.5 to 5 mls and is slightly alkaline 7.2-7.7...
how many sperm are produced in the testis daily
200 to 300 million
How many chromosomes do haploid cells have
23
How Many sperm complete the process of spermatogenesis per day
300 million
Have many chromosomes do diploid cells have
46
How long does spermatogenesis take
65 to 75 day
What is a hydrocele
A collection of serous fluid in the tunica vaginalis caused by an injury or inflammation of the epididymis
What is a prostate
A doughnut shaped gland the size of a golf ball
Define Priapism
A persistent and usually painful erection of the penis that does not involve sexual desire for excitement
What is inhibin
A protein hormone that inhibits FSH's secretions by the anterior pituitary
Externally the scrotum looks like
A single purchase skin separated into lateral portions by a median rich called the raphe
What is septum made of
A subcutaneous layer and measure tissue called the dartos muscle
When the dartos muscle contracts that happens
Causes the scrotum to become tight wrinkled in appearance. Which reduces heat loss
What is the vas deferens or ductus deference
Comes after the ductus epididymis
dartos muscle is
Composed of bundles of smooth muscle fibers
Define cryptorchidism
Condition in which the testis do not descend into the scrotum
What does semen contain
Contains firm classes secretions provided by the accessory sex glands
What is the scrotal septum
Divide scrotum into two sacks each containing a single testis
Where's the site of sperm maturation
Epididymis
What are system ducts
Epididymis, ductus deference, ejaculatory ducts, and urethra
What are straight tubules in males
Is A short duct where the pressure generated by the fluid secreted by the sustentacular cells which sperm and fluid along the lumen into the short ducts
What is an epididymis
Is a comma-shaped organ that lies along the posterior border of each testis
What is the androgen
Is a hormone that promotes the development of masculine characteristics
What is the varicocele
Is a swelling in the scrotum due to the dilation of the veins that drain testes
Define Inguinal canal
Is an oblique passageway in the interior abdominal wall just superior and parallel to medial half of the inguinal ligament, the spermatic cord and the ileal inguinal nerve passed through this area
What is an ampulla
Is the dilated terminal portion of the ductus deference or vas deferens
What are lobules
Is the tunica albuginea that extends inward forming septa to divide the testis into a series of internal compartment
What is different ducts
Is when the sperm leaves the retain test this to a series of coiled ducts in the epididymis the empty into a single to call the ductus epididymis
Define premature ejaculation
It occurs too early and usually caused by anxiety or other psychological causes or from an unusual sensitive foreskin or glans penis
What is semen
It's a mixture of sperm and seminal fluid consisting of secretions from the seminiferous tubule, seminal fluids, prostate, and bulbourethral glands
What regulate the temperature of the testes
Location of the scrotum and contraction of the muscle fibers 2 to 3°C below core body temperature
Contraction of the cremaster muscle does what
Moves the testis closer to the body where they can absorb body heat when it's cold
Define the seminal vesicles
Our pouch like structures that secrete alkaline viscous fluid containing fructose prostaglandins clotting proteins that are different from those in the blood
Define ejaculation
Powerful release of semen from the urethra to the exterior.. It's a sympathetic reflex
Stem cells called spermatogonia develop from
Primordial germ cells
What is sperm maturation
Process by which sperm acquire motility and the ability to fertilize an ovum takes about 14 days
Spermatogenesis
Process by which the seminiferous tubules of the testis producers sperm
What is the function of the prostate
Secretes a milky slightly acidic to contain citric acid proteolytic enzymes and seminalplasmin
What are accessory sex glands
Seminal vesicles, prostate and bulbourethral glands
Where is sperm produced
Seminiferous tubules
Cremaster muscle
Series of small bands of Selena muscle that descends as the next tension of the internal oblique muscle through the spermatic cord to surround the testis
Interstitial cells or leydig cells are
Spaces between adjacent seminiferous to and are known as clusters of cell and secretes testosterone
The testes produce
Sperm and secrete hormones
The seminiferous tubules contain two types of cells what are they
Spermatogenic cells-the sperm forming cells and sustentacular cells or Sertoli cells
Bilateral cryptorchidism if untreated results in
Sterility because the cells involved in the initial stages of spermatogenesis are destroyed at a higher temperature of the pelvic cavity
What does gonadotropin releasing hormone do
Stimulates gonadotrophs in the anterior pituitary to increase the secretions of two gonadotropins :: luteinizing hormone and follicle-stimulating hormone
What promotes a mans libido
Testosterone
Functions of the male reproductive system
The Texas produce sperm and the male sex hormone testosterone the ducks transport door and assist in maturation of our the accessory sex glands create most of the liquid portion of semen the penis contains the urethra a passageway for ejaculation of semen and excretion urine
What is Tunica albuginea
The same weight fibrous capsule composed of dense irregular connective tissue that surrounds the testis
What is a scrotum
The supporting structure tests as consists of loose skin and underlying subcutaneous layer that hangs from the root of the penis
The organs of the male reproductive system include
The testes a system of ducts, the three sex glands and several supporting structures including the scrotum and the penis
What rete testis
This went straight to Ilsley twin network of ducks in the testis
But the function of the penis
To deliver sperm into the female reproductive tract
What is the function of the scrotum
To support the testis
The purpose of the duct system is
To transport and store sperm assist in the maturation conveyed into the exterior
define Circumcision
a surgical procedure inm which part of or the entire prepuce is removed ...performed several days after birth