Which is true about the growth of long bones?
A)Osteoblasts dissolve bone tissue when bones remodel in response to sex hormones.
B)Osteoclasts are responsible for depositing new bone tissue at the epiphyseal growth plate before puberty.
C)Before adolescence,bones are completely made up of cartilage;after puberty they ossify and harden.
D)Growth in length occurs at a single epiphyseal growth plate in the center of the shaft of long bones.
E)Growth in length occurs at two epiphyseal growth plates near the ends of long bones.

Question

Which is true about the growth of long bones?
A)Osteoblasts dissolve bone tissue when bones remodel in response to sex hormones.
B)Osteoclasts are responsible for depositing new bone tissue at the epiphyseal growth plate before puberty.
C)Before adolescence,bones are completely made up of cartilage;after puberty they ossify and harden.
D)Growth in length occurs at a single epiphyseal growth plate in the center of the shaft of long bones.
E)Growth in length occurs at two epiphyseal growth plates near the ends of long bones.

Quizplus · Accepted Answer

Growth in length of long bones occurs at two epiphyseal growth plates located near the ends of the bone. These growth plates are made up of cartilage and are responsible for lengthening the bone during development. This process continues until the individual reaches skeletal maturity, at which point the growth plates ossify and the bone stops growing in length. Osteoblasts are responsible for depositing new bone tissue, while osteoclasts are responsible for breaking down and remodeling bone tissue. Before adolescence, bones are not completely made up of cartilage, but rather contain a mixture of cartilage and bone tissue. Sex hormones do play a role in bone remodeling, but they do not cause osteoblasts to dissolve bone tissue.

Which Is True About the Growth of Long Bones