Crown
Crown: 1. In dentistry, the portion of the tooth that is covered by enamel. 2. Also in dentistry, a type of restoration that covers all or most of the natural tooth. 3. In anatomy, the top of the head, as in the crown-rump length of a fetus. 4. In obstetrics, when a generous portion of the fetal scalp (the crown) become visible at the vaginal opening during labor. Soon after the baby crowns, delivery usually occurs.
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- Cruciate ligament, anterior
Cruciate ligament, anterior: The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint (collateral ligaments) as well as crossing within the joint (cruciate ligaments). These ligaments provide stability and strength to the knee joint. The anterior cruciate ligament (cruciate means shaped like a cross) is in […]
- Cruciate ligament, posterior
Cruciate ligament, posterior: The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint (collateral ligaments) as well as crossing within the joint (cruciate ligaments). These ligaments provide stability and strength to the knee joint. The posterior cruciate ligament (cruciate means shaped like a cross) crosses behind […]
- Crush injury
Crush injury: An injury that occurs because of pressure from a heavy object onto a body part. A crush injury may also arise from squeezing of a body part between two objects. Depending upon their severity, crush injuries can be complicated by bleeding, bruising, broken bones, open wounds, poor circulation, or breakdown of muscle (rhabdomyolysis).
- Crutch
Crutch: A wooden or metal vertical prop that helps support a disabled person while he or she is walking. Crutches extend from the walking surface to either the armpit or the arm. A typical hardwood armpit crutch has a 20-inch length of 1″x1″ wood at the bottom to which are attached 2 other lengths of […]
- Cry for help
Cry for help: An expression of suicidal intent in the hope of receiving help and being rescued. A cry for help may take many different forms such as a telephone call, a message left on an answering phone, a note left in a conspicuous place, or an e-mail message. It may also be a symbolic […]