An animal with vertebrae made from either cartilage or bone is a vertebrate. Vertebrates can be mammals, fish, birds, reptiles or amphibians.Continue Reading
Vertebrates all have a stiff vertebral column running down their bodies, and this column is made up of a series of discs and vertebrae to support the animal structurally and to lend it a certain amount of flexibility.
Scientists think that vertebrates first emerged during the Cambrian period, which was around 525 million years ago. The first known vertebrate is considered to be an animal known as Myllokunmingia, which had a skull and skeleton that was made up of cartilage.Learn more about Bones
Bone is made mostly of collagen and calcium. This combination works to make the bones strong and flexible at the same time, enabling them to be protective and rebound from stress fractures.Full Answer >
According to a Time article authored by Lisa LaValle Overmyer, people who suffer from low bone density can keep their bones strong by eating certain foods and exercising. Human bones are being continually broken down and rebuilt, but after the age of 30, this process slows down quite a bit. Bones are broken down, and they are not built back up as quickly.Full Answer >
The best way to perform jumps for bone density is to alternate jumps with 30-second rest breaks. No plyometric boxes or benches are necessary; jumping up and down on the floor is adequate, provided that the person jumps as high as she can each time.Full Answer >
The funny bone's name derives from the funny feeling that occurs when the ulnar nerve is hit. This nerve runs from the ring and pinkie fingers to the elbow. The ulnar nerve communicates with the brain about what the fourth and fifth fingers are experiencing.Full Answer >