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Red marrow is found within the trabeculae of spongy bone.
spongy bone
Cnidarians do not have spicules. Spicules are commonly found in sponges and it is a simply a skeleton which has very tiny splinters that look like needles.
Trabeculae carneae are fleshy beams found on the inner surface of the right and left ventricles of the heart. Do not confuse it with the pectinate muscle that is found in the right atrium and left auricle.
In the Sun's chromosphere
true
Steps: 1. Mesenchyme cells differentiate into osteoblasts and start to secrete matrix 2. Osteoblasts form spicules of matrix 3. Spicules trap osteoblasts in lacuna 4. Activity slows 5. Trapped osteoblasts called osteocytes 6. Bone growth proceeds outward from center (ossification center) 7. Spicules thicken into trabeculae (spongy bone) 8. Trabeculae connect (compact bone)
The trabeculae
Spicules are small, spike-like structures found in various organisms. They are composed of hard, sturdy compounds that often act as a protective covering on organisms, such as the spicules on some frogs' skin.
Spicules
Trabeculae Carneae.
E. Trabeculae Well, Trabeculae translates to tiny beam or rod whereas trabeculae means tiny plates... and if it is for spongy bone, then that would be A. interstitial lamellae