Human Anatomy & Physiology 11th Latest Edition Elaine N. Marieb Quotes

“The cornea has no blood vessels and so it is beyond the reach of the immune system. As a result, the cornea is the only tissue in the body that can be transplanted from one person to another with little risk of rejection.”
― Elaine Marieb & Katja Hoehn, Human Anatomy & Physiology 11th Latest Edition Elaine N. Marieb

“Although irises come in different colors (iris = rainbow), they contain only brown pigment. When they have a lot of pigment, the eyes appear brown or black. If the amount of pigment is small and restricted to the posterior surface of the iris, the unpigmented parts simply scatter the shorter wavelengths of light and the eyes appear blue, green, or gray. Most newborn babies’ eyes are slate gray or blue because their iris pigment is not yet developed.”
― Elaine Marieb & Katja Hoehn, Human Anatomy & Physiology 11th Latest Edition Elaine N. Marieb