Skeleton intervertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle. Cartilage is composed of specialized cells called chondrocytes that produce a large amount of extracellular matrix composed of Type II collagen (except Fibrocartilage which also contains type I collagen) fibers, abundant ground substance rich in proteoglycan, and elastin fibers. Cartilage is classified in three types, elastic cartilage, hyaline cartilage and fibrocartilage, which differ in the relative amounts of these three main components. Unlike other connective tissues, cartilage does not contain blood vessels. The chondrocytes are supplied by diffusion, helped by the
It Grows on Trees It Grows on Trees It Grows on Trees is a 1952 fantasy comedy film directed by Arthur Lubin starring Irene Dunne in her final screen role. The story is about a couple who discover two trees in their backyard that grow money. One morning a few days after Polly Baxter (Dunne) purchased a couple of trees and planted them in her backyard, a $5 bill floats in through an open window, spurring a curious turn of luck to her family's ongoing financial concerns. As she continues to collect more in the following days and weeks, Polly finds that the money