sex cells that meet and combine with zygote
contain half as many chromosomes
wo homologous copies of each chromosome, usually one from the mother and one from the father.
a form of cell division
the production of sperm cells
the primitive male stem cells found at the tubule periphery. before puberty all of these are mitotic divisions that produce more of itself.
a cell that divides to form two secondary spermatocytes
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)
an immature gamete produced by a spermatocyte
the maturation of the spermatids into sperm
a mature sperm cell
tip of the sperm that contains enzymes essential to fertilization
produce ATP needed for beating of the tail when the sperm migrates up the femal reproductive tract
a lash-like appendage used for locomotion
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
a structure resembling a cord that suspends the testis within the scrotum and contains the vas deferens and other vessels and nerves
are more substantial muscle that pull the testes close to the body
the external pouch that contains the testes
The male gonads, which produce sperm and secrete male sex hormones.
Small convoluted tubules in the testes where spermatogenesis takes place.
Stores sperm until mature
a duct that carries spermatozoa from the epididymis to the ejaculatory duct
a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens
They produce a substance that nourishes the sperm passing through the tract
a firm partly muscular chestnut sized gland in males at the neck of the urethra
produce a thick clear alkanline mucus that acts to wash residual urine out