Question

The space in between trabeculae of the long bone, contains highly vascularised red bone marrow which takes part in forming erythrocytes and granular leukocytes. It is not present in which of the following:
A. Proximal ends of long bones
B. Vertebrate
C. Skull bones
D. Clavicles

Answer 1

Hint: Bone marrow is your spongy tissue, such as your hip and thigh bones, inside some of your bones. It contains stems. It contains stems. The stem cells can evolve into the red blood cells that carry oxygen across your organism, white blood cells that fight infections and blood clotting platelets.

Complete answer:
Given, highly vascularized red bone marrow is present in the space between trabeculae of a long bone.
The bone marrow is a tissue that comprises the center of the large bones and helps in the production of red blood cells. Red bone marrow can be found in the flat bones like breast bone, ribs, shoulder blades, clavicles, hip bone, and at the proximal ends of the long bones that are femur and humerus.
In light of the above statement, we can check from the provided option if the red bone marrow is present or not.
Options A, B, D includes the example of some of the long bones and thereby they have the red bone marrow.
Since in question we are asked to tell about the option in which red bone marrow is not present so we have eliminated Option A, B, D.
We are now left with the skull bones which play a major role in the protection of the brain and the skull is composed of the brain and the nervous tissue that helps in processing the various body part functions.

Therefore, option C) skull bones are the correct option in which red bone marrow is not found. Hence, option C) is the correct answer.

Note:
The skull is an organ structure that protects the face and forms a cavity to shield the brain. It consists of various bones shaped from within the membrane and connected by sutures (fibrous joints). The bones of the cranium (which are made up of the cranial and cranial base) and those on the face may be considered as two classes.