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What are the epiphyseal plates and why are they useful for determining age?
Wiki User
∙ 8y ago
The epiphyseal plate is an area at the long end of the bone that contains growing bone. As people develop, the bone grows longer as a result of activity inside this area. These plates permit growth after birth, allowing the long bones of the body to extend and a person to grow as he or she reaches maturity. Once growth is completed and the person reaches full maturity and stature, the new bone slowly hardens and the plate turns into the epiphyseal line.
The plates fuse over at a stable and predictable rate, so someone with experience can examine a bone and make an estimate of its age. After about age 25, when the epiphyseal lines are fully formed, it is much harder to figure the age.
Wiki User
∙ 8y ago
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What fossils are useful in determining the relative age of rocks?
Index fossils
Why would uranium-238 not be useful in determining the age of a spear that is thought to be 5000 years old?
Uranium dating is useful for long periods of time - e.g. 109 years. For fossils is recommended the method with 12C.
What is not a factor in determining critical mass is?
The age of the material.
What would be the two methods of dating fossils and explain each?
relative and absolute. relative is determining the relative order of past events, without necessarily determining their absolute age. Absolute is the process of determining an approximate computed age in archaeology and geology.
How does carpals and tarsals of the fetal skelton compare to adults?
The carpals (wrists) and tarsals (ankles) are not yet ossified in the fetus. The hardening of these bones begins in the first 4 weeks of life outside the womb, and continues for some bones until the age of 12 years.
What are epiphyseal fusions and what can they tell a forensic anthropologist?
Epiphyseal fusions are the process where the growth plates in bones close as a person reaches skeletal maturity. Forensic anthropologists can use the degree of epiphyseal fusion to estimate the age of individuals at the time of death, which helps in identifying the individual.
A fault can be useful in determining which group of rocks?
relative age
How rocks layer useful in determining the age of the earth?
they are useful by showing where the fossil is buried then on that certain layer, it will be studied to know the age.
What fossils are useful in determining the relative age of rocks?
Index fossils
When does Epiphyseal Plate close?
Epiphyseal plates close after puberty. This because your body begins to produce testosterone, which is in turn converted into estrogen, which is responsible for the closing of the growth plate or Epiphyseal Plate. So it differs from person to person, if you have gone through puberty then your growth plates are developed.
What property of radioactive elements make useful for determining absolute age?
Igneous rock. If you are in FIS you know me. O.K.
Can you see an epiphyseal plate on a open dried femur bone?
Not if it is a femur from a skeletally mature individual. The epiphyseal plate of the femur closes at around age 17 or 18. After this age, you would not see the epiphyseal plate, but you should be able to see the physis (or physeal) scar. This is the point at which the epiphysis and metaphysis have fused.
How do you tell how old a box turttle is?
The only way to really be sure of a box turtle's age is to be present at the hatching. Determining age by the hexagonal lines on the plates of the shell (scutes) is not reliable.
What property of radioactive elements make them useful for determining absolute age?
Igneous rock. If you are in FIS you know me. O.K.
Measurements of half-life make radioactive isotopes useful for?
They're useful for x-rays or looking at metals,or determining the age of rocks/fossils. (Hope it helped!😁)
Why would uranium-238 not be useful in determining the age of a spear that is thought to be 5000 years old?
Uranium dating is useful for long periods of time - e.g. 109 years. For fossils is recommended the method with 12C.
What is the structure of an epiphyseal plate?
The epiphyseal disk is the growth plate in long bones that is found between the two epiphyses and the diaphysis. This is a space that remains as long as a person is growing. When growth is completed, the epiphyses and the diaphysis meet and fuse forming a line.
