Male Reproductive System Overview

<p>It provides a cooler environment for sperm production (C)</p> Signup and view all the answers

<p>Concentration increases significantly (D)</p> Signup and view all the answers

<p>To produce and deliver sperm, and support sperm maturation through secretions. (D)</p> Signup and view all the answers

<p>Body hair distribution (D)</p> Signup and view all the answers

<p>Prostate (A), Bulbourethral gland (D)</p> Signup and view all the answers

<p>Testes, epididymis, vas deferens, ejaculatory duct. (D)</p> Signup and view all the answers

<p>Production of sperm and testosterone. (A)</p> Signup and view all the answers

<p>Through the contraction of smooth muscles in the vas deferens and ejaculatory duct. (B)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>Spermiogenesis (C)</p> Signup and view all the answers

<p>Penetrating the ovum (C)</p> Signup and view all the answers

<p>Seminiferous tubules (C)</p> Signup and view all the answers

<p>It is the site where sperm production takes place. (D)</p> Signup and view all the answers

<p>Production of new germ cells (B)</p> Signup and view all the answers

<p>To transport sperm cells into the urethra. (C)</p> Signup and view all the answers

<p>Providing nourishment and support to developing sperm cells (B)</p> Signup and view all the answers

<p>To prevent the release of sperm from the testes. (B)</p> Signup and view all the answers

<p>Secretion of mucus for lubrication during sexual intercourse. (C)</p> Signup and view all the answers

<p>Diploid (B)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>Prostate gland. (A)</p> Signup and view all the answers

<p>It contributes to the clotting of semen. (D)</p> Signup and view all the answers

<p>To generate energy for sperm movement (D)</p> Signup and view all the answers

<p>To lubricate the urethra during ejaculation. (A)</p> Signup and view all the answers

<p>It fills with blood and becomes erect. (C)</p> Signup and view all the answers

<p>Ovaries (A)</p> Signup and view all the answers

<p>The scrotum is a sac that surrounds the testes and helps to keep them at a lower temperature than the rest of the body. (A)</p> Signup and view all the answers

<p>Increase in bone density (A)</p> Signup and view all the answers

<p>Degeneration of small testicular blood vessels due to aging (D)</p> Signup and view all the answers

<p>Testosterone is essential for the final maturation of spermatozoa in the epididymis. (D)</p> Signup and view all the answers

<p>By increasing the production of sebum by sebaceous glands (B)</p> Signup and view all the answers

<p>Negative feedback loop involving luteinizing hormone (LH) (C)</p> Signup and view all the answers

<p>By promoting protein synthesis and increasing muscle mass (A)</p> Signup and view all the answers

<p>Increased bone density (A)</p> Signup and view all the answers

<p>Promoting the development of secondary sexual characteristics (C)</p> Signup and view all the answers

<p>Sertoli cells provide structural support for developing sperm cells and create a specialized microenvironment for their maturation. (B)</p> Signup and view all the answers

<p>Synthesis and release of testosterone, the primary male sex hormone. (C)</p> Signup and view all the answers

<p>Testosterone exerts negative feedback on the release of LH and FSH, ultimately regulating the production of both hormones. (B)</p> Signup and view all the answers

<p>The expulsion phase of ejaculation primarily relies on the contraction of smooth muscles in the walls of the reproductive ducts. (C)</p> Signup and view all the answers

<p>The volume of seminal fluid produced by the accessory sex glands varies with the time elapsed since the last ejaculation. (D)</p> Signup and view all the answers

<p>Increased sympathetic vasoconstrictor activity in penile arterioles. (D)</p> Signup and view all the answers

<p>Testosterone provides negative feedback to the pituitary gland, regulating both LH and FSH secretion, ultimately controlling spermatogenesis and testosterone production. (A)</p> Signup and view all the answers

<p>Testes -&gt; Epididymis -&gt; Vas Deferens -&gt; Urethra (B)</p> Signup and view all the answers

<p>Reduced production of follicle-stimulating hormone (FSH) by the pituitary gland. (A), Impaired function of the vas deferens, leading to blocked transport of sperm. (C)</p> Signup and view all the answers

<p>Testosterone acts in a negative feedback loop to regulate LH secretion, while inhibin mainly regulates FSH secretion. (C)</p> Signup and view all the answers

<p>The epididymis is the site where sperm gain motility and complete their maturation process. (B)</p> Signup and view all the answers

<p>Development of a deeper voice. (A), Growth of facial and pubic hair. (B), Increased muscle mass and strength. (D)</p> Signup and view all the answers

<p>Spermatids. (B), Secondary spermatocytes. (D)</p> Signup and view all the answers

<p>Bulbourethral glands. (D)</p> Signup and view all the answers

<p>The acrosome contains enzymes that help the sperm penetrate the ovum during fertilization. (D)</p> Signup and view all the answers

<p>The process of differentiation, where round spermatids transform into spermatozoa. (D)</p> Signup and view all the answers

<p>They secrete a fluid rich in fructose and prostaglandins that contributes to semen volume and sperm nutrition. (C)</p> Signup and view all the answers

<p>A negative feedback loop involving the hypothalamus, pituitary gland, and Leydig cells. (A)</p> Signup and view all the answers

<p>Contains enzymes that assist in the penetration of the ovum. (B)</p> Signup and view all the answers

<p>Spermiogenesis (D)</p> Signup and view all the answers

<p>Inhibin inhibits testosterone production, while testosterone stimulates inhibin production, creating a feedback loop. (B)</p> Signup and view all the answers

<p>Decreased sensitivity of Leydig cells to LH due to aging (B)</p> Signup and view all the answers

<p>Testosterone indirectly promotes acne by increasing oil production (C)</p> Signup and view all the answers

<p>They secrete fibrinogen, which helps to 'clot' semen, ensuring sperm retention in the female reproductive tract. (A), They secrete fructose, providing energy to the sperm for their journey to the egg. (B), They produce prostaglandins, which stimulate smooth muscle contractions to propel sperm towards the egg. (C)</p> Signup and view all the answers

<p>Damage to the seminal vesicles, resulting in a deficiency of fructose and prostaglandins. (B), A blockage in the vas deferens, preventing sperm from reaching the ejaculatory duct. (D)</p> Signup and view all the answers

<p>It mainly secretes enzymes that help in the coagulation and subsequent liquefaction of semen, facilitating sperm retention and subsequent release in the female reproductive tract. (A)</p> Signup and view all the answers

<p>Defective function of the seminal vesicles, resulting in reduced secretion of seminal fluid. (C)</p> Signup and view all the answers

<p>Relaxation of smooth muscles in the penile arteries, allowing blood to flow and fill the erectile tissue, resulting in enlargement and rigidity. (D)</p> Signup and view all the answers

<p>They produce a clear, slippery mucus that lubricates the urethra, preparing it for the passage of semen during ejaculation. (B)</p> Signup and view all the answers

<p>Dysfunctional production of clotting enzymes by the prostate gland. (D)</p> Signup and view all the answers

<p>It transports sperm from the epididymis to the ejaculatory duct, providing fructose and other essential substances for their survival. (B)</p> Signup and view all the answers

<p>Oligospermia (A)</p> Signup and view all the answers

<p>Lower temperatures are ideal for the growth and maturation of the sperm-producing cells. (C)</p> Signup and view all the answers

<p>A significant reduction in the volume of fluid surrounding the sperm. (A)</p> Signup and view all the answers

<p>The epididymis is a continuation of the vas deferens, where sperm maturation and storage occur. (B)</p> Signup and view all the answers

<p>Failure of the testes to descend can be a sign of other genetic abnormalities associated with infertility. (A)</p> Signup and view all the answers

<p>Disrupted sperm maturation leading to a decrease in the number of viable sperm. (C)</p> Signup and view all the answers

<p>ABP binds to testosterone, creating a higher local concentration of testosterone within the seminiferous tubules, supporting sperm development. (B)</p> Signup and view all the answers

<p>Decreased production and secretion of testosterone by Leydig cells, leading to a reduction in the hormone responsible for regulating erectile function. (A)</p> Signup and view all the answers

<p>Movement of sperm from the seminiferous tubules into the epididymis. (C)</p> Signup and view all the answers

<p>An abnormally high production of inhibin, leading to a decrease in FSH levels and subsequently reduced spermatogenesis. (A), A disruption of the blood-testis barrier, preventing the proper functioning of Sertoli cells. (C)</p> Signup and view all the answers

<p>Inhibin provides negative feedback regulation of FSH, while testosterone provides negative feedback regulation of LH, both contributing to the balanced control of testicular function. (D)</p> Signup and view all the answers

<p>Increased sympathetic vasoconstrictor activity to penile arterioles. (C)</p> Signup and view all the answers

<p>A decline in testosterone production due to aging or underlying medical conditions, leading to reduced androgenic effects on the body. (C)</p> Signup and view all the answers

<p>The process of spermiogenesis, where spermatids differentiate into spermatozoa. (C)</p> Signup and view all the answers

<p>Damage to the seminiferous tubules, disrupting the environment for spermatogenesis. (A)</p> Signup and view all the answers

<p>An autoimmune reaction targeting Leydig cells, causing a decrease in testosterone production, followed by a reduction in FSH levels due to the lack of feedback. (C)</p> Signup and view all the answers

A long coiled duct for sperm storage and maturation.

The duct that stores and carries sperm from the epididymis.

Primary reproductive organs producing sperm and testosterone.

Skin-covered sac that holds the testes outside the body.

The process of sperm cell production, takes place in the testes.

Union of male and female gametes forming a new individual.

System including penis, testes, and accessory glands responsible for sperm production and delivery.

Glands such as prostate and seminal vesicles that secrete fluids into the reproductive tract.

Externally visible parts of the male reproductive system (penis, scrotum, testicles).

Reproductive organs (testes in males) that produce gametes and sex hormones.

The main male sex hormone that affects sperm production and secondary sex characteristics.

External traits like body configuration and hair distribution that differentiate males from females.

Spermatozoa consist of a head, acrosome, midpiece, and tail.

The head contains the nucleus which has DNA necessary for fertilization.

An enzyme-filled vesicle that helps penetrate the ovum.

The midpiece is rich in mitochondria providing energy for movement.

The tail gives mobility to sperm, allowing it to swim toward the egg.

Testosterone is essential for initiating and maintaining spermatogenesis.

Support cells for spermatogenesis that produce ABP.

A protein that binds testosterone, enhancing spermatogenesis.

Cells located outside seminiferous tubules, responsible for testosterone production.

Engorgement of the penis with blood, necessary for sexual intercourse.

The process of expelling semen from the urethra during orgasm.

A spinal reflex initiated by stimulation of the penis glans, causing erection.

Inability to achieve or maintain sufficient erection for intercourse.

Ejaculate volume and sperm count vary between ejaculations.

Hormone that stimulates testosterone secretion from Leydig cells.

Hormone that enhances spermatogenesis through Sertoli cells.

Testosterone helps maintain sex drive in adult males.

Testosterone regulates gonadotropin-releasing hormone through negative feedback.

Testosterone contributes to a more muscular physique and growth spurt during puberty.

Testosterone stimulates oil secretion from sebaceous glands.

Continuous testosterone secretion is required for spermatogenesis and male reproductive tract maintenance.

Testosterone levels and sperm production gradually decrease after age 45-50 years.

Androgen deficiency (ADAM) occurs due to reduced testosterone with aging.

Formed by ductus deferens and seminal vesicle ducts; propels sperm with seminal fluid into urethra.

Sterilization procedure removing a segment of ductus deferens, blocking sperm exit.

Paired glands that secrete alkaline fluid and fructose for sperm energy, forming ejaculatory ducts.

Mixture of sperm, mucus, and secretions from accessory sex glands.

Secretes alkaline fluid for sperm viability and enzymes for coagulating semen.

Glands that secrete mucus for lubrication during ejaculation.

Tissue in the penis that fills with blood during arousal, leading to enlargement.

The process of discharging urine from the urinary bladder through the urethra.

Sugar supplied by the seminal vesicles to nourish sperm cells.

Factors that regulate the function of male gonads (testes).

Include sperm production and delivery of semen through ejaculation.

Produce sperm and sex hormones influencing reproduction and traits.

Duct for sperm storage and maturation before ejaculation.

Glands that provide fluids supporting sperm motility and survival.

Specialized ducts (epididymis, ductus deferens) transport gametes after production.

Storage and maturation site for spermatozoa in males.

Tube that stores and transports sperm from the epididymis.

Holds testes outside the body for temperature control essential for sperm production.

The process where sperm concentration increases by a 100-fold in the epididymis.

The process where testes move to the scrotum by the seventh month of gestation.

The complex process converting spermatogonia into spermatozoa.

An enzyme-filled vesicle on sperm's head aiding fertilization.

Part of sperm rich in mitochondria, providing energy.

Takes approximately 2 months to produce mature sperm.

Essential hormone for initiating and maintaining spermatogenesis.

Undifferentiated diploid germ cells that give rise to sperm.

Transports sperm from epididymis to ejaculatory duct with fructose.

Formed by merging ductus deferens and seminal vesicles ducts.

Propels sperm with seminal fluid into the urethra.

Secrete alkaline fluid and fructose, making up over 50% of semen.

Secretes alkaline fluid and enzymes for sperm viability and coagulation.

Secrete mucus for lubrication during ejaculation.

A procedure removing ductus deferens segment, blocking sperm exit.

Aids sperm survival in acidic female reproductive tract.

Fills with blood during arousal, causing penis erection.

Hormone secreted by the anterior pituitary that stimulates testosterone secretion from Leydig cells.

Hormone that enhances spermatogenesis by acting on Sertoli cells.

Testosterone regulates gonadotropin-releasing hormone via negative feedback.

Testosterone promotes protein synthesis and bone growth.

Testosterone activates sebaceous glands, contributing to oil secretion and acne.

Ongoing testosterone is essential for spermatogenesis and male reproductive tract maintenance.

Testosterone levels gradually decrease after age 45-50, affecting sperm production.