The function of ligaments is connecting one bone to another bone, according to MedlinePlus. Ligaments also protect the joints from damage by limiting certain types of movements.Continue Reading
The human body has more than 20 different ligaments, according to the University of Arkansas for Medical Sciences. They are found in the back, upper limbs, lower limbs, chest, abdomen, pelvis, head and neck.
One of the most well-known ligaments is the anterior cruciate ligament. The ACL connects the thigh bone to the tibia, which is found in the calf. The American Academy of Orthopaedic Surgeons estimates that approximately 200,000 ACL injuries happen each year.
A good way to see a ligament at work is to attempt to bend the elbow backward. Ligaments prevent this motion, reducing the risk of injury to the joint.Learn more about Biology
When a bone is soaked in acid, it loses its rigidity. Acids react with the calcium in bone; without calcium, bones become soft and pliable. This process occurs both in nature and in laboratory conditions.Full Answer >
Normal bone density is reported with a T-score of -1.0 or above and a Z-score greater than -2, according to MedlinePlus. T-scores less than -1.0 and Z-scores less than -2.0 may indicate abnormal bone loss and the potential for subsequent fractures.Full Answer >
For smaller bones, a pressure of 25 pounds may be enough to break them. The amount of pressure that it would take to break a bone depends on the bone. Some bones are stronger than others.Full Answer >
Beta-carotene and other carotenoids are converted to vitamin A, an essential nutrient for humans, according to MedlinePlus. Carotenoids are red, orange and yellow plant pigments that also are antioxidants, which help protect cells from damage. Beta-carotene is found in fruits, vegetables and whole grains naturally, and it can be synthesized.Full Answer >