MALE REPRODUCTIVE Flashcards
Organs of the male reproductive system**
(1) Testes; a system of ducts (epididymis, ductus deferens, ejaculatory ducts, and urethra)
(2) Accessory sex glands (seminal vesicles, prostate, and bulbourethral glands)
(3) And several supporting structures, including the scrotum and penis
Accessory sex glands of the male reproductive system**
(seminal vesicles, prostate, and bulbourethral glands
Definition:
paired oval glands that develop on the produce sperm and secrete hormones. **
testes
Semen contains**
sperm plus the secretions provided by the accessory sex glands.
Definition:
a pouch that supports the testes; it consists of loose skin, superficial fascia, and smooth muscle.
scrotum
The production and survival of sperm is optimal at a temperature**
2-3° C below normal body temperature
Definition:
Dense White Fibrous Capsule that extends inward and divides each testis into internal compartments.
Lobules
Definition:
Produce sperm by a process called spermatogenesis. Lined with spermatogenic cells
Seminiferous tubules
Definition:
Located between the developing sperm cells in the seminiferous tubules, support, protect, and nourish spermatogenic cells; phagocytize degenerating spermatogenic cells; secrete fluid for sperm transport; and release of the hormone inhibin, which regulate sperm production
Sertoli Cells
Definition:
These clusters are located between the seminiferous tubules.
These cells secrete the hormone testosterone. **
Leydig cells
Definition:
Hormone that promotes the development of masculine characteristics.
Androgen
Definition:
Promotes a man’s libido (sex drive).
Testosterone
Definition:
The process by which the seminiferous tubules of the testes produce sperm**
Spermatogenesis
Spermatogenesis Consists of three stages
meiosis I, meiosis II, and spermiogenesis.
Definition:
somatic cells containing two sets of chromosomes.
Diploid cells
Definition:
In sexual reproduction, an organism results from
the fusion of two different gametes, one from each parent.
Stages of Spermatogenesis.
Spermatogenesis begins during puberty and continues throughout life. The time from on-set of cell division in a spermatogonium until sperm are re-leased into the lumen of a seminiferous tubule is 65 to 75 days
Spermatogonia contain the diploid number of chromosomes
46
primary spermatocytes are diploid or haploid
diploid
Is there further replication of DNA In meiosis II?
no