Male Reproductive System Quiz

The primary sex organ in males that produces sperm and testosterone.

The sac located outside the body that contains the testes. It helps maintain a cooler temperature for sperm production.

The process of sperm production, which occurs in the seminiferous tubules inside the testes.

A double-layered membrane derived from the peritoneum that surrounds the testes.

The outer layer of the testes that provides structural support and is made of fibrous tissue.

A structure that encloses blood vessels, nerves, and the vas deferens, connecting the testes to the pelvic cavity.

The male reproductive organ responsible for delivering sperm into the female reproductive tract.

The spongy erectile tissue that surrounds the urethra in the penis, and is responsible for maintaining an erection.

The process of sperm production, taking place in the seminiferous tubules of the testes.

Diploid stem cells lining the seminiferous tubules, responsible for initiating spermatogenesis.

The process by which nonmotile spermatids mature into sperm cells, involving elongation, shedding excess cytoplasm, and developing a tail.

The haploid cells produced after meiosis II, which undergo spermiogenesis to become sperm cells.

The supporting cells of the seminiferous tubules, providing nutrients and creating a protective barrier for developing sperm.

The process that prevents the immune system from attacking developing sperm cells.

The hormone released by the hypothalamus that initiates the production of sperm.

The hormone released by the anterior pituitary gland that stimulates the production of testosterone by the testes.

The hormone released by the anterior pituitary gland that stimulates the sustentocytes to release androgen-binding protein (ABP).

The hormone produced in the testes and responsible for sperm development and male secondary sexual characteristics.

The coiled duct of the male reproductive system that stores and nourishes sperm for about 20 days before they are released.

A muscular duct that carries sperm from the epididymis through the spermatic cord and into the pelvic cavity. It is responsible for propelling sperm during ejaculation.

A surgical procedure that severs and ligates the ductus deferens on both sides of the body, preventing sperm from being transported to the urethra.

The terminal portion of the male reproductive duct system, responsible for both urinary and reproductive functions.

The accessory gland that produces a viscous alkaline fluid containing fructose, enzymes, and prostaglandins, which enhances sperm motility and fertilization.

The single gland that encircles the urethra inferior to the bladder. It secretes a milky fluid containing PSA and sperm-activating enzymes during ejaculation.

A condition characterized by inflammation of the prostate, often due to bacterial infection or autoimmune disorders.

A non-cancerous enlargement of the prostate that often occurs with age. It can compress the urethra and cause difficulty urinating.

A type of cancer that develops in the prostate gland. It's the second most common cause of cancer death in men.

The mixture of sperm, testicular fluid, and accessory gland secretions that carries sperm during ejaculation.

The process of engorging the penile erectile bodies (corpora cavernosa and corpus spongiosum) with blood, resulting in an erection. This is triggered by sexual stimuli that activate the parasympathetic nervous system, leading to the release of nitric oxide (NO). NO causes relaxation of smooth muscle in penile arterioles, allowing blood to flow into the erectile bodies. The compression of veins prevents blood from draining out, maintaining the erection.

The process of propelling semen out of the male duct system. It is initiated by sexual activity, triggering a sympathetic spinal reflex. This reflex involves contraction of the bladder sphincter to prevent urine release, contraction of male ducts and accessory glands to release secretions into the urethra, and final contraction of the urethra's skeletal muscles to propel the semen through the urethra.

The process of cell division that reduces the number of chromosomes from diploid (2n) to haploid (n). This process is unique to germ cells (in testes and ovaries) and involves one round of DNA replication followed by two consecutive nuclear divisions (Meiosis I and Meiosis II).

Meiosis I is the first division of meiosis, which reduces the chromosome number from 2n to n. During Prophase I, homologous chromosomes pair up and exchange genetic material through crossing over, ensuring genetic diversity in the daughter cells.

Meiosis II is the second division of meiosis, which separates the replicated DNA (sister chromatids) into individual chromosomes, creating four daughter cells each containing a haploid set of chromosomes.

Mitosis involves a single division, producing two identical daughter cells with the same number of chromosomes as the parent cell. Meiosis, however, involves two divisions, resulting in four genetically unique daughter cells with half the number of chromosomes.

Mitosis provides cells for growth and repair, maintaining the genetic makeup of the body's cells. Meiosis is essential for reproduction, reducing the chromosome number by half to create gametes that restore the diploid number upon fertilization.

During Prophase I of Meiosis, homologous chromosomes pair up tightly, allowing for the exchange of genetic material between them. This process is called crossing over and contributes to the genetic diversity of offspring.