Male reproductive system #1

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.
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)
an immature gamete produced by a spermatocyte
the maturation of the spermatids into sperm
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
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
the external pouch that contains the testes
The male gonads, which produce sperm and secrete male sex hormones.
Seminiferous tubules
Small convoluted tubules in the testes where spermatogenesis takes place.
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