Question

Osteoporosis is caused by
A. \[{\text{F}}{{\text{e}}^{2 + }}\] deficiency
B. ${\text{N}}{{\text{a}}^ + }$ deficiency
C. Parathormone hyposecretion
D. Parathormone hypersecretion

Answer 1

Hint: Osteoporosis is a condition that degenerates bones. The bone becomes brittle due to the lack of bone tissue and low bone mass. Therefore, the person is very prone to fractures. This type of fracture is called a fragility fracture. It is caused due to oversecretion of a particular hormone.

Complete answer: Osteoporosis is caused by hypersecretion of parathormone. Parathormone secretes parathyroid hormone and increases the blood calcium levels by increasing the reabsorption of calcium in bones. Excessive secretion of hormones causes more calcium to dissolve in the bones, resulting in a decrease in bone density. It can also be inherited in family members. Women are also susceptible to this disease. Symptoms of osteoporosis are as follows:
1. Back pain caused by spinal fracture or collapse.
2. Decline in height over time.
3. Curved posture.
4. Fractures are much easier than expected.
Bones provide the body with support, protection and structure for internal organs. It is composed of calcium and other minerals and has rigidity and strength. They also include bone marrow, which is where new blood cells are synthesized. Each bone contains two types of bone tissues.
a. Cortical bone: a thick shell or covering that makes the bones look firm and smooth.
b. Trabecular bone: strong mesh in the shell.
Thus, the correct answer is option D.

Note: Osteopenia can be considered a precursor of osteoporosis. Here, the bones are not as fragile as those observed in osteoporosis, but they are more fragile than normal bones. Its characteristic is that the human body cannot build new tissue as quickly as it absorbs old bone tissue, thereby weakening the bones, which may lead to osteoporosis. Usually observed in people over 50 years of age.