the middle layer of the wall of the eye. the uvea has 3 main parts: (1) the choroid (the tissue layer filled with blood vessels); (2) the ciliary body (the ring of muscle tissue that changes the size of the pupil and the shape of the lens); and (3) the iris (the colored part of the eye). also called uveal tract.
the middle layer of the wall of the eye. the uveal tract has 3 main parts: (1) the choroid (the tissue layer filled with blood vessels); (2) the ciliary body (the ring of muscle tissue that changes the size of the pupil and the shape of the lens); and (3) the iris (the colored part of the eye). also called uvea.
a membrane which is semipermeable
evaporate through a semipermeable membrane
a membrane that covers the surface of a bone, called periosteum
thin membranous sheath around a nerve fiber
vascular membrane that lines the inner surface of long bones
a membrane that covers the surface of the cartilage, called perichondrium