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Gamete

sex cells that meet and combine with zygote

HAploid

contain half as many chromosomes

diploid

wo homologous copies of each chromosome, usually one from the mother and one from the father.

Meiosis

a form of cell division

Spermatogenesis

the production of sperm cells

Spermatogonia

the primitive male stem cells found at the tubule periphery. before puberty all of these are mitotic divisions that produce more of itself.

Primary spermatocyte

a cell that divides to form two secondary spermatocytes

Secondary spermatocyte

the result of meiosis I of the primary spermatocyte is this haploid which is smaller in size. two are made out of one primary spermatocyte, they are destined to undergo meiosis II (DNA is not replicated before division)

Spermatid

an immature gamete produced by a spermatocyte

Spermiogenesis

the maturation of the spermatids into sperm

spermatozoa

a mature sperm cell

Acrosomal cap

tip of the sperm that contains enzymes essential to fertilization

Spiral mitochondria

produce ATP needed for beating of the tail when the sperm migrates up the femal reproductive tract

Flagellum

a lash-like appendage used for locomotion

Inguinal canal

in males it is the passage through which the testes descend into the scrotum and it contains the spermatic cord; in females it transmits the round ligament of the uterus

Spermatic cord

a structure resembling a cord that suspends the testis within the scrotum and contains the vas deferens and other vessels and nerves

Cremaster muscles

are more substantial muscle that pull the testes close to the body

Scrotum

the external pouch that contains the testes

Testes

The male gonads, which produce sperm and secrete male sex hormones.

Seminiferous tubules

Small convoluted tubules in the testes where spermatogenesis takes place.

Epididymis

Stores sperm until mature

Vas deferens

a duct that carries spermatozoa from the epididymis to the ejaculatory duct

Ejaculatory duct

a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens

Seminal vesicles

They produce a substance that nourishes the sperm passing through the tract

Prostate gland

a firm partly muscular chestnut sized gland in males at the neck of the urethra

Bulbourethral glands

produce a thick clear alkanline mucus that acts to wash residual urine out

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