Question

Which among the following are the characteristics of a long bone?
(a) It has two ends called epiphysis
(6) Shaft contains a cavity filled with bone marrow.
(c) Red bone marrow is called so due to the entry of blood vessels
(d) Marrow cavity is lined by a layer of osteoblasts called endosteum.
(A) (a) and (b) only
(B) (b) and (c) only
TEL
(C) (a), (b), and (d)
(D) All of the above.​

Answer 1

Answer:

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Answer 2

Option(d):' All the above ' is the correct option.

• Long bones are bone that has a greater length than width.
• Long bones have shafts and two ends.
• Long bones have a thick outside layer of compact bone and an inner cavity containing bone marrow.
• The ends of a long bone consist of a spongy bone and an epiphyseal line.
• The epiphyseal line is a remnant of an area that contains hyaline cartilage that grew during childhood to lengthen the bone.

Characteristics of long bones

• It has two ends called epiphysis.
• The shaft consist of a cavity filled with bone marrow.
• Red bone marrow is called so due to the entry of blood vessels.
• The marrow cavity is lined by a layer of osteoblasts called endosteum.

Hence, Option(d):' All the above is the correct option.

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