Reproductive System Questions and All
Actual Answers 2026-2027 Updated.
In the male reproductive system, the essential organs of reproduction are called:
Seminal vesicles
Testes
Vas deferens
Cowper glands - Answer Testes
The testes are the male gonads and are considered essential organs of the system. The seminal
vesicles and Cowper glands are accessory glands and are not essential organs of the system. The
vas deferens is a reproductive duct and not an essential organ. You should review the
Introduction.
Which of the following is not a secreting gland in the male reproductive system?
Seminal vesicle
Epididymis
Prostate
Bulbourethra - Answer Epididymis
The epididymis is a reproductive duct, not a gland. The seminal vesicle, prostate, and
bulbourethral are accessory or supportive sex glands, which secrete fluid in the male
reproductive system. You should review Male Reproductive Glands.
The tightly coiled tube of the epididymis measures:
5 feet in length
10 feet in length
15 feet in length
20 feet in length - Answer 20 feet in length
The time it takes the sperm to travel through the long, 20-foot tube of the epididymis allows it
to further mature. You should review Reproductive Ducts.
,Stem cells for sperm are known as:
Spermatogenesis
Spermatogonia
Spermatids
Spermatozoa - Answer Spermatogonia
Spermatogonia are the precursors of sperm and are located near the outer edge of each
seminiferous tubule. Spermatogenesis is the process of sperm production, while spermatids are
daughter cells that result from spermatogenesis. A mature sperm cell is a spermatozoa. You
should review Spermatogenesis.
In the sperm, mitochondria are located in the:
Acrosome
Head
Tail
Midpiece - Answer Midpiece
Mitochondria in the midpiece break down ATP to provide energy for the sperm. The acrosome
contains enzymes that enable the sperm to penetrate the ovum, and the head contains the
genetic material from the male. The tail propels the sperm along its journey. You should review
Spermatozoa.
The optimal temperature for sperm production is about ___________ normal body
temperature.
10 degrees below
3 degrees below
10 degrees above
3 degrees above - Answer 3 degrees below
The sperm should be kept about 3 degrees (C) lower than body temperature for optimal
production and survival. Although sperm must be kept lower than body temperature, 10
degrees below normal is too cool. Anything above normal is too warm. You should review
Testes.
, Which of the following structures does not secrete a substance that makes up seminal fluid?
Testes
Seminal vesicles
Bulbourethral glands
Ductus deferens - Answer Ductus Deferens
The ductus deferens is a reproductive duct and is used as a passageway; it does not secrete a
substance. The testes secrete sperm into the seminal fluid, and the seminal vesicles and
bulbourethral glands secrete fluid into the seminal fluid. You should review Accessory Sex
Glands.
The male gland that secretes a fructose sugar used as an energy source for sperm is the:
Spermatic cord
Bulbourethral
Seminal vesicle
Cowper - Answer Seminal vesicle
The seminal vesicle adds a fructose sugar to the semen, which provides a source of energy for
the sperm so that it might survive during the journey to the site of fertilization. The spermatic
cord is a structure that contains arteries, veins, nerves, and the ductus (vas) deferens. The
bulbourethral (Cowper) glands secrete a precoital lubricating fluid. You should review Accessory
Sex Glands.
The foreskin on the male is also known as the:
Glans penis
Urinary meatus
Scrotum
Prepuce - Answer Prepuce
The prepuce is the foreskin and is the structure that is removed during a circumcision. The glans
penis is the enlarged area at the distal end of the shaft that is covered by the foreskin. The
urinary meatus is the external opening of the urethra, and the scrotum is a part of the external
genitalia. You should review External Genitalia.
Actual Answers 2026-2027 Updated.
In the male reproductive system, the essential organs of reproduction are called:
Seminal vesicles
Testes
Vas deferens
Cowper glands - Answer Testes
The testes are the male gonads and are considered essential organs of the system. The seminal
vesicles and Cowper glands are accessory glands and are not essential organs of the system. The
vas deferens is a reproductive duct and not an essential organ. You should review the
Introduction.
Which of the following is not a secreting gland in the male reproductive system?
Seminal vesicle
Epididymis
Prostate
Bulbourethra - Answer Epididymis
The epididymis is a reproductive duct, not a gland. The seminal vesicle, prostate, and
bulbourethral are accessory or supportive sex glands, which secrete fluid in the male
reproductive system. You should review Male Reproductive Glands.
The tightly coiled tube of the epididymis measures:
5 feet in length
10 feet in length
15 feet in length
20 feet in length - Answer 20 feet in length
The time it takes the sperm to travel through the long, 20-foot tube of the epididymis allows it
to further mature. You should review Reproductive Ducts.
,Stem cells for sperm are known as:
Spermatogenesis
Spermatogonia
Spermatids
Spermatozoa - Answer Spermatogonia
Spermatogonia are the precursors of sperm and are located near the outer edge of each
seminiferous tubule. Spermatogenesis is the process of sperm production, while spermatids are
daughter cells that result from spermatogenesis. A mature sperm cell is a spermatozoa. You
should review Spermatogenesis.
In the sperm, mitochondria are located in the:
Acrosome
Head
Tail
Midpiece - Answer Midpiece
Mitochondria in the midpiece break down ATP to provide energy for the sperm. The acrosome
contains enzymes that enable the sperm to penetrate the ovum, and the head contains the
genetic material from the male. The tail propels the sperm along its journey. You should review
Spermatozoa.
The optimal temperature for sperm production is about ___________ normal body
temperature.
10 degrees below
3 degrees below
10 degrees above
3 degrees above - Answer 3 degrees below
The sperm should be kept about 3 degrees (C) lower than body temperature for optimal
production and survival. Although sperm must be kept lower than body temperature, 10
degrees below normal is too cool. Anything above normal is too warm. You should review
Testes.
, Which of the following structures does not secrete a substance that makes up seminal fluid?
Testes
Seminal vesicles
Bulbourethral glands
Ductus deferens - Answer Ductus Deferens
The ductus deferens is a reproductive duct and is used as a passageway; it does not secrete a
substance. The testes secrete sperm into the seminal fluid, and the seminal vesicles and
bulbourethral glands secrete fluid into the seminal fluid. You should review Accessory Sex
Glands.
The male gland that secretes a fructose sugar used as an energy source for sperm is the:
Spermatic cord
Bulbourethral
Seminal vesicle
Cowper - Answer Seminal vesicle
The seminal vesicle adds a fructose sugar to the semen, which provides a source of energy for
the sperm so that it might survive during the journey to the site of fertilization. The spermatic
cord is a structure that contains arteries, veins, nerves, and the ductus (vas) deferens. The
bulbourethral (Cowper) glands secrete a precoital lubricating fluid. You should review Accessory
Sex Glands.
The foreskin on the male is also known as the:
Glans penis
Urinary meatus
Scrotum
Prepuce - Answer Prepuce
The prepuce is the foreskin and is the structure that is removed during a circumcision. The glans
penis is the enlarged area at the distal end of the shaft that is covered by the foreskin. The
urinary meatus is the external opening of the urethra, and the scrotum is a part of the external
genitalia. You should review External Genitalia.
