61. Blood cells are needed for healthy blood , and they are made in the bone marrow, a soft material.62. How many pairs of ribs do people usually have in all?Twelve /12(pairs)63. Where can you find the smallest bone in your body?In the ear.64.Bones protect and support yout body...
Why do birds have bones without bone marrow? Bone marrow is present in all animals which belong to the group mammals. Therefore,bone marrow is absent in Aves. ... The bones of birds are hollow with an air cavity and fully ossified. Such bones are called pneumatic bones. Hollow Bird Bone...
()2.There are pieces of bones inside our body.A.200B.206C.6()3.The bones haveA.the same sizes B.different sizes C.many sizes()4.Here“something soft'”meansA.the bones are soft B.somebody has soft bonesC.marrow inside our bones()5.The white blood cells and the red blood cells...
Do bones have endothelial cells? What are all the bones in the skeletal system? What produces blood cells in spongy bone? How is bone marrow made? What is created in red bone marrow? Why is the femur used to determine height? Does the skeletal system produce blood cells?
Does bone marrow have nerves? The nerves of the gastrointestinal tract are referred to as What are afferent nerves? What system are the nerves in? Does the sclera have nerves? Why do your nerves belong to the peripheral nervous system?
The soft inside partof bones is called bone marrow.Some tough parts of your body are made of cartilage. Cartilage is not as hard as bone,but it is strong. Cartilage can also bend. The outside parts of your ears are made of cartilage.So is the tip of your nose. Some bones have ...
For those of you who don’t know this already, the fact that babies have more bones than adults might come as a big surprise. Your shock is pretty justifiable; if you’ve ever held a baby in your arms, you have probably been amazed at how soft their bodies are. Given that, it seem...
Some bones have cartilage on their ends. The cartilage helps keepthose bones from rubbing against each other.判断正误,写T或F。1. You cannot see your skeleton because it holds you up from the outside.2. Your skeleton is made of bones.3. All parts of bones are hard.4. Cartilage is ...
Did ancient sharks have bones? No. Fossil evidence suggests that all ancient sharks lacked a true bone-based skeletal system, relying instead on primitive cartilage structures to provide their bodies with support and flexibility. This means thatsharks have been without bones for millions of years!
As long as the meat reaches a safe temperature, it's perfectly safe to eat the marrow inside the bones. Cook all raw beef, pork, lamb, and veal steaks, chops, and roasts to a minimum internal temperature of 145°F as measured with a food thermometer before removing meat from the heat...