| A | B |
|---|
| Uterus | Specialized structure for holding the developing baby. |
| Fraternal | non-identical twins |
| Morphogenesis | hange in shape and form of a body part |
| Glomerulus | Cluster of blood capillaries which filters fluid in the kidney |
| Gastrula | embryo which contains all three primary germ layers. |
| Fetus | Stage of development from 8 weeks to birth. |
| Placenta | Structure which attaches embryo to uterine wall; provides site for exchange of nutrients and wastes with mother's blood |
| Head | Part of a sperm which stores enzymes to penetrate egg |
| Mesoderm | middle layer; produces muscle |
| Secretion | Process of ridding body of harmful compounds that were not filtered; occurs in distal convoluted tubule |
| Sperm | Male gamete. |
| Prostate | chestnut-shaped gland which produces a fluid which neutralizes acidity of vagina. |
| Cervix | Part of uterus which projects down into vagina. |
| Seminal vesicle | gland that produces a fluid contain fructose which provides energy to the sperm |
| Kidney | main organ of excretion; removes liquid or metabolic wastes from blood. |
| Vagina | Birth canal. |
| Fertilization | Union of sperm and egg which results in formation of a zygote. |
| Nephrons | Microscopic filters |
| Menstruation | loss of the uterine lining if there is no pregnancy |
| Identical | twins produced by one egg and one sperm |
| Reabsorption | occurs in the proximal convoluted tubule; returns glucose |
| Cortex | Outer part of kidney. |
| Filtration | first step in urine formation; occurs as a result of blood pressure |
| Distal | convoluted tubule nearest the collecting duct |
| Epididymis | Place where sperm cells mature and are stored. |
| Ovum | Female gamete; egg. |
| Semen | Fluid which contains sperm and neutralizes acidity of vagina so sperm are not harmed. |
| Ureter | Tube that carries urine from kidney to bladder. |
| Proximal | Convoluted tubule where sugar and other nutrients are reabsorbed; convoluted tubule nearest the glomerulus |
| Oviducts | carries the egg from the ovary to the uterus in humans |
| Cleavage | Early rapid cell division without growth of the individual cells |
| Sexual | type of reproduction in which there is a union of gametes |
| Gametogenesis | process of gamete production; meiosis |
| Ectoderm | outside layer; produces epithelium and nervous system |
| Embryo | Baby |
| Excretion | Elimination of molecules that have taken part in metabolic reactions. |
| Penis | transfers sperm from male to female |
| Balance | water intake equals water loss |
| Endoderm | produces the lining of the digestive system |
| Differentiation | Cells become specialized in structure and function |
| Organogenesis | process of organ development from the primary germ layers |
| Urethra | Tube that carries urine from bladder out of the body. |
| Asexual | type of reproduction which does not involve gametes; budding |
| Vas Deferens | Sperm duct |
| Seminiferous | tubules which make up the testes; sperm form here |
| Testes | Organs that produce sperm. |
| Blastula | Hollow ball of cells in early stage of development. |
| Bladder | Place where urine is stored until it leaves body. |
| Ovary | Produces eggs and female hormones. |
| 14 | day of ovulation in female cycle (number) |
