Case Study 2 Bone Tissue Questions and Answers
Module 04 Case Study: Bone Tissue
Part I— “Marissa” Questions
1. Describe bone tissue and the role each component plays in bone physiology and remodeling. What is the difference between compact and spongy bone? (2 points)
Bone tissue is composed of bone cells and extracellular matrix. It is continuously remodeling its extracellular matrix according to the stresses placed upon it. It has a lot of blood flow and it is supplied by the nervous system. The bone cells includes; Osteocytes, osteoblasts and osteoclasts. The osteoblasts build and repair the bone matrix; the osteocytes are the mature cells that have become surrounded by the matrix while the osteoclasts chew up or break down the bone matrix. The difference between the spongy and compact bone is that the extracellular matrix is arranged differently.
2. Explain the relationship between calcium and bones. (1 point) Calcium is essential for the maintenance of the necessary level of bone mass in other to support the structures of the body. It aids the development of bones and bone mass.
3 Explain how the body controls calcium levels in the bones and blood. Be sure to describe the roles of parathyroid hormone (PTH) and calcitonin in detail. (2 points) The body controls calcium levels in the bones and blood by virtue of hormonal influences. The parathyroid hormone and calcitonin. The parathyroid hormone (PTH), which is secreted by the parathyroid glands, is responsible for regulating blood calcium levels; it is released whenever blood calcium levels are low. It increases blood calcium levels by stimulating osteoclasts, which break down bone to release calcium into the blood stream. Parathyroid Hormone increases blood calcium levels by increasing the amount of calcium reabsorbed by the kidneys before it can be excreted in the
Part I— “Marissa” Questions
1. Describe bone tissue and the role each component plays in bone physiology and remodeling. What is the difference between compact and spongy bone? (2 points)
Bone tissue is composed of bone cells and extracellular matrix. It is continuously remodeling its extracellular matrix according to the stresses placed upon it. It has a lot of blood flow and it is supplied by the nervous system. The bone cells includes; Osteocytes, osteoblasts and osteoclasts. The osteoblasts build and repair the bone matrix; the osteocytes are the mature cells that have become surrounded by the matrix while the osteoclasts chew up or break down the bone matrix. The difference between the spongy and compact bone is that the extracellular matrix is arranged differently.
2. Explain the relationship between calcium and bones. (1 point) Calcium is essential for the maintenance of the necessary level of bone mass in other to support the structures of the body. It aids the development of bones and bone mass.
3 Explain how the body controls calcium levels in the bones and blood. Be sure to describe the roles of parathyroid hormone (PTH) and calcitonin in detail. (2 points) The body controls calcium levels in the bones and blood by virtue of hormonal influences. The parathyroid hormone and calcitonin. The parathyroid hormone (PTH), which is secreted by the parathyroid glands, is responsible for regulating blood calcium levels; it is released whenever blood calcium levels are low. It increases blood calcium levels by stimulating osteoclasts, which break down bone to release calcium into the blood stream. Parathyroid Hormone increases blood calcium levels by increasing the amount of calcium reabsorbed by the kidneys before it can be excreted in the