| A | B |
|---|
| olfactory bulb | location of "smelling" nerves |
| hormone | a chemical substance secreted into the bloodstream by an endocrine gland that regulate some part of the body |
| pancreas | regulates glucose in the body |
| metabolism | the rate of energy use |
| thyroid | controls metabolism |
| pituitary gland | controls all the endocrine glands |
| embryo | an unborn child during the first 8 weeks |
| fetus | unborn child from 8 weeks until birth |
| placenta | a special organ that supplies the fetus with nutrients and oxygen |
| cervix | a firm band of muscle at the end of the uterus that softens at labor |
| uterus | a hollow, muscular organ in which a fetus develops |
| ossification | process by which cartilage changes to bone |
| amniotic fluid | clear fluid that cushions the fetus in the uterus |
| ossicles | 3 small bones in the ear that transfer vibrations or sound waves |
| semicircular canals | fluid in these canals register movement and keeps you in blance |
| retina | back part of the eye that transmits images to the optic nerve |
| iris | colored portions (muscles) of the eye that change the amount of light entering the eye |
| rods | retina neurons that discern light and dark |
| cones | retina neurons that discern color |
| ciliary muscles | move the lens of the eye to focus on objects |
