periosteum

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periosteum

 [per″e-os´te-um]
a specialized connective tissue covering all bones of the body, and possessing bone-forming potentialities. Periosteum also serves as a point of attachment for certain muscles. The connective tissues of the muscle fuse with the fibrous layers of periosteum. adj., adj perios´teal.

per·i·os·te·um

, pl.

per·i·os·te·a

(per'ē-os'tē-ŭm, -ă), [TA]
The thick, fibrous membrane covering the entire surface of a bone except its articular cartilage and the areas where it attaches to tendons and ligaments. In young bones, it consists of two layers: an inner cellular layer that is osteogenic, forming new bone tissue, and an outer fibrous connective tissue layer conveying the blood vessels and nerves supplying the bone; in older bones, the osteogenic layer is reduced.
See also: perichondral bone.
Synonym(s): periost
[Mod. L. fr. G. periosteon, ntr. of adj. periosteos, around the bones, fr. peri, around, + osteon, bone]

periosteum

/peri·os·te·um/ (-os´te-um) a specialized connective tissue covering all bones and having bone-forming potentialities.

periosteum

(pĕr′ē-ŏs′tē-əm)
n. pl. perios·tea (-tē-ə)
The dense fibrous membrane covering the surface of bones except at the joints and serving as an attachment for muscles and tendons.

per′i·os′te·al (-tē-əl), per′i·os′te·ous (-tē-əs) adj.

periosteum

[per′i·os′tē·əm]
Etymology: Gk, peri + osteon, bone
a thick, fibrous vascular membrane covering the bones, except at their extremities. It consists of an outer layer of collagenous tissue containing a few fat cells and an inner layer of fine elastic fibers. Periosteum is permeated with the nerves and blood vessels that innervate and nourish underlying bone. The membrane is thick and markedly vascular over young bones but thinner and less vascular in later life. Bones that lose periosteum through injury or disease usually scale or die.

per·i·os·te·um

, pl. periostia (per'ē-os'tē-ŭm, -ă) [TA]
The thick, fibrous membrane covering the entire surface of a bone except its articular cartilage. In young bones, it consists of two layers: an inner cellular layer that is osteogenic, forming new bone tissue, and an outer fibrous connective tissue layer conveying the blood vessels and nerves supplying the bone; in older bones, the osteogenic layer is reduced.
See also: perichondral bone

periosteum

The tissue that surrounds bone. Periosteum has an inner bone-forming (osteoblastic) layer, a middle fibrous layer and an outer layer containing many blood vessels and nerves.

periosteum

the CONNECTIVE TISSUE which surrounds the bone of vertebrates and to which are connected the MUSCLES and TENDONS. OSTEOBLASTS are present in the periosteum, and are important in bone repair after breakage.

Periosteum

A fibrous vascular membrane that covers bones.
Mentioned in: Tennis Elbow

periosteum

thick, fibrous, vascular membrane investing bone surface, but not articular cartilage; formed of an inner osteogenic layer (containing osteoblasts that form new bone tissue) and an outer, fibrous layer (carrying neurovascular supply to bone)

per·i·os·te·um

, pl. periostia (per'ē-os'tē-ŭm, -ă) [TA]
Thick, fibrous membrane covering entire surface of a bone except its articular cartilage and areas where it attaches to tendons and ligaments.

periosteum (per´ēos´tēum),

n the layer of connective tissue that varies considerably in thickness in the different areas of bone. It consists of two layers: an outer layer, which is rich in blood vessels and nerves and shows a dense arrangement of collagenous fibers, and an inner layer, the cambium, in which the fibers are loosely arranged, the cells numerous, and the blood vessels relatively sparse. During active growth, this layer of osteoblasts covers the periosteal surface of the bone. In the quiescent state in the adult, the periosteum primarily provides support. However, the inner layer retains its osteogenetic potencies and in fractures is activated to form osteoblasts and new bone.

periosteum

a specialized connective tissue covering all bones of the body, and possessing bone-forming potentialities. It is made up of an outer tough fibrous layer and a deeper more succulent osteogenic layer. Periosteum also serves as a point of attachment for certain muscles, tendons and ligaments. The connective tissues fuse with the fibrous layers of periosteum.