Male Reproductive System Questions

Testes are located outside the body cavity to maintain a temperature lower than body temperature for sperm development.

Testes produce testosterone, classifying them as an endocrine gland.

Spermatogenesis, the production of sperm, happens in the seminiferous tubules of the testes.

Leydig cells produce testosterone in response to luteinizing hormone (LH).

The tunica albuginea is a protective covering that divides the testes into lobules.

The dartos muscle wrinkles the scrotal skin to regulate heat loss.

The cremaster muscle elevates the testes to maintain optimal temperature for sperm development.

Sperm maturation occurs in the epididymis.

Efferent ductules transport sperm from rete testis to epididymis.

The membranous urethra passes through the urogenital diaphragm.

Seminal vesicles secrete fluid rich in fructose and fibrinogen.

The prostate gland produces seminal fluid and contains prostate-specific antigen.

Bulbourethral glands secrete a mucus-like fluid to lubricate the urethra.

Spermatogenesis occurs in the seminiferous tubules.

Secondary spermatocytes are haploid cells produced during the first meiotic division.

Spermiogenesis transforms spermatids into mature sperm.

Mature sperm are haploid (n).

The acrosome contains enzymes to penetrate the egg.

Fructose is the primary energy source for sperm in seminal fluid.

Luteinizing hormone (LH) triggers testosterone release in the testes.

FSH stimulates spermatogenesis.

Testosterone is responsible for male secondary sexual characteristics.

Aging typically leads to a decrease in testis size.

Enlarged prostate gland affecting urination.

hCG stimulates testosterone production in male fetuses.

Increased GnRH secretion initiates male reproductive function during puberty.

Elevated FSH stimulates spermatogenesis in the seminiferous tubules.

Leydig cells produce testosterone in response to LH.

GnRH stimulates the anterior pituitary to release LH and FSH.

Spermatogenesis produces haploid gametes for fertilization.

Spermatogonia divide by mitosis to produce primary spermatocytes.

Spermatids lose excess cytoplasm and form acrosomes and flagella during spermiogenesis.

First meiotic division (meiosis I) produces haploid secondary spermatocytes.

The epididymis stores sperm until ejaculation.

The ejaculatory duct connects the vas deferens to the prostatic urethra.

The spongy urethra transports urine and semen to the external urethral orifice.

The Epididymis tail connects to the vas deferens.

Bulbourethral glands neutralize acidic urine in the urethra.

Seminal vesicles secrete a fructose-rich fluid for sperm energy.

Fibrinolysin liquefies semen after ejaculation.

Seminal fluid has an alkaline pH (7.2--8.0).

Sympathetic signals initiate emission during ejaculation.

Internal urethral sphincter contracts to prevent semen and urine intermix.

Skeletal muscles at the penis base cause rhythmic contractions during ejaculation.

Aging causes prostate thickening of the epithelial lining.

Aging results in a decreased rate of sperm production.

Benign prostatic hyperplasia (BPH) leads to urination problems in aging men.

The midpiece of the sperm contains mitochondria for energy production.

The acrosome contains enzymes that aid in penetrating the oocyte.

The testes are located outside the body cavity to maintain a cooler temperature than the core body temperature, which is crucial for proper sperm development.

The testes are classified as endocrine glands because they secrete hormones, specifically testosterone, directly into the bloodstream.

Spermatogenesis, the process of sperm production, takes place in the seminiferous tubules, which are tightly coiled tubes within the testes.

Leydig cells are the cells in the testes responsible for producing testosterone in response to the LH hormone.

The tunica albuginea is a tough, fibrous layer covering the testes. It provides protection and divides the testes into lobules.

The dartos muscle is found in the scrotum and helps regulate temperature by wrinkling the scrotal skin, reducing heat loss in cold conditions.

The cremaster muscle elevates the testes closer to the body in cold temperatures to maintain optimal temperature for sperm development.

Sperm cells mature in the epididymis, a long, coiled tube that sits on the back of the testes.

Efferent ductules transport sperm from the rete testis, a network of tubes within the testes, to the epididymis.

The membranous urethra is a short segment of the urethra that passes through the urogenital diaphragm, a muscular structure that supports the pelvic floor.

The seminal vesicles are glands that secrete a fluid rich in fructose, a sugar that provides energy for sperm, and fibrinogen, which helps to solidify semen.

The prostate gland contributes to semen volume and produces prostate-specific antigen (PSA), a marker used to detect prostate problems.

The bulbourethral glands, also called Cowper's glands, secrete a clear, mucus-like fluid that lubricates the urethra during sexual arousal.

The primary purpose of spermatogenesis is to produce haploid sperm cells, which carry half the genetic information needed for fertilization.

Spermatogonia are stem cells that divide by mitosis to create primary spermatocytes, which are the starting point for producing sperm.

Spermiogenesis is the final stage of sperm development where spermatids mature into functioning sperm by forming a head, a midpiece with mitochondria, and a tail for movement.

The first meiotic division (meiosis I) in spermatogenesis produces haploid secondary spermatocytes, each with half the number of chromosomes.

Mature sperm are stored in the epididymis until ejaculation.

The ejaculatory duct connects the vas deferens to the prostatic urethra, the passageway that runs through the prostate gland.

The spongy urethra is the final segment of the urethra running through the penis. It carries both urine and semen to the external urethral orifice for excretion.

The tail section of the epididymis directly connects to the vas deferens, the tube that carries sperm from the epididymis to the ejaculatory duct.

The bulbourethral gland secretes a fluid that neutralizes acidic urine in the urethra, creating a favorable environment for sperm.

Seminal vesicles add fructose to the semen, which is the primary energy source for sperm motility.

Fibrinolysin is an enzyme in semen that liquefies the coagulated semen after ejaculation, allowing sperm to move freely.

Seminal fluid generally has an alkaline pH, usually ranging from 7.2 to 8.0, which is slightly basic.

Emission, the movement of seminal fluid into the urethra during ejaculation, is triggered by sympathetic nerve signals.

The internal urethral sphincter contracts during ejaculation to prevent semen from mixing with urine.

Rhythmic contractions during ejaculation are caused by the reflex activation of skeletal muscles at the base of the penis, propelling semen outwards.

As men age, the prostate gland's epithelial lining (inner cell layer) generally thickens, which can lead to prostate enlargement.

With aging, the rate of sperm production naturally declines, which can contribute to decreased fertility.

Benign prostatic hyperplasia (BPH) is a condition where the prostate gland enlarges, often causing urinary problems, including difficulty urinating or frequent urination.