produce sperm cells ad male sex hormones.
located within the testes; where immature sperm cells undergo meiosis.
cells located adjacent to seminiferous tubules; produce testosterone.
cells support cells to developing sperm cells.
coiled tubes where sperm cells mature and are stored.
carry sperm from epididymis to the urethra.
gland that secretes fluids into the semen that protect the sperm from acids in the urethra.
secrete many of the fluids that make up semen including fructose and prostaglandins.
gland that secretes an alkaline fluid into the semen to protect it from the acidic environment in the vagina.
duct formed at the joining of the vas deferens and seminal vessicles, which conduct semen to the urethra.
carries semen during ejaculation and opens at the end of the penis.
deposits sperm into the female vagina during ejaculation
the production of sperm cells
immature sperm cells.
site of ovum development and ovulation.
lead from ovaries to the uterus and carry ovum to uterus; usually the site of fertilization.
organ in which the embryo and fetus develop.
inner membrane of the uterus where fertilized ovum become implanted.
lower portion of the uterus where it joins the top of the vagina; dilates during birth.
leads from the cervix to the exterior of the body; provides a passageway for semen and functions as the birth canal.
egg cell; female gamete.
an immature ovum.
produces hormones that are needed to maintain a pregnancy.
gene that directs he development of the testes in a male fetus.
sweeps the egg into the fallopian tube.
phase in the menstrual cycle in which the endometrium is shed.
phase in the menstrual cycle in which the endometrium builds up.
peak of the menstrual cycle in which the oocyte is fully mature.
phase in the menstrual cycle in which the endometrium is maintained before the flow.
female hormone that causes development of breasts, thickening of endometrium and the growth of the uterus; inhibits facial hair.
female hormone that causes development of breast tissue, regulation of the menstrual cycle and inhibits ovulation.
male hormone that stimulates the spermatogenesis, growth of testes and penis and facial hair.
hormone that stimulates spermatogenesis in males and follicle cell development in females.
hormone that stimulates production of testosterone in males and triggers ovulation in females.
hormone that stimulates synthesis and secretion of FSH and LH.
hormone that inhibits production of testosterone.
a form of meiotic division in which the zygote divides.
hormone maintains the corpus luteum by maintaining levels of estrogen and progesterone.
formed from a zygote; a fluid-filled sphere of cells.
outer extraembryonic structure of the developing embryo that will contribute to the placenta.
fluid-filled extraembryonic structure.
the phase of development in which three layers compose the embryo.
forms the skin, nervous system and parts of the eyes, ears and mouth.
forms the muscles, bones, kidneys and sex organs.
forms the liver, bladder, pancreas, endocrine glands and the lining for the digestive system and respiratory tract.
the fluid around the embryo.
increase the surface area available for the exchange if materials, such as nutrients, between the mother and fetus.
supplies the corpus luteum with blood vessels.
hormone that loosens ligaments in the pelvis and softens the cervix.
hormone that stimulates uterine contractions during childbirth; stimulates the release of prolactin.
stimulates the synthesis of milk.
occurs when the spinal cord fails to develop properly; caused by folic acid deficiency.
agent that causes developmental abnormalities.