BIOLOGY
Penis
testis- contains seminiferous tubules in which spermatogenesis occurs
Vas-deferens (sperm duct)- transport of the sperm
prostate gland- releases alkaline solution (to neutralize female secretions) and blocks the release of urine during coitus
erectile tissue containing blood sinuses- retention of blood in the sinuses causes the spongy tissues to harden and thus the penis to become erect enabling coitus
urethra- tube through which semen passes during coitus, transport of urine to exterior
glans of the penis- highly sensitive zone that aids in the initiation of an erection
seminal vesicles- secrete sugar solution, providing both a liquid medium for the sperm and nutrients for swimming
cowper's gland- secretion cleanses the urethra of urine
epididymis- storage area for the sperm after their production; providing the nutrients required for maturation of the sperm
scrotum- sacs outside the abdominal cavity which house the testis
Vagina
fallopian tube (oviduct)- transports secondary oocyte; site of fertilization
uterus- composed of muscular myometrium lined with endometrium. site of implantation of the fertilized ovum, development of the fetus during pregnancy and origin of contractions during birth
vagina- receptacle for penis during coitus; birth passage and for menstrual flow
clitoris- sensitive erectile tissue homologous to the glans penis
funnel of fallopian tube- sweep released oocyte into oviduct
right ovary- sites of oogenesis and the production and secretion of the hormones estrogen and progesterone
cervix- muscular ring, protecting uterus; secretes mucous plug
vulva- protection of openings of vagina, urethra and clitoris; lubrication during coitus
Spermatogenesis
By the process of meiosis, sperm are produced in the testes. The process begins in the seminiferous tubules and the final stage (where the sperm develop mobility) occurs in the epididymis. Approximately 120 million sperm are produced each day...