Male reproductive system Chapter 28

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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


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