Question

Select the correct statement with respect to locomotion.
A. A decreased level of progesterone causes osteoporosis in old people.
B. Accumulation of uric acid crystals in joints causes their inflammation.
C. The vertebral column has 10 thoracic vertebrae.
D. The joint between adjacent vertebrae is a fibrous joint.

Answer 1

The locomotion refers to the process of the movement of an organism. We move our body parts and change our positions with the help of various movements in joints. Any problem in the proper functioning of joints causes difficulty in locomotion.

Complete step by step answer: Locomotion is a necessary function of the body. It allows us to move when in need. We can eat, run, wear clothes, do work, etc because of movement in our joints that allows us to move. Any dysfunction in the working of joints causes the inability to move properly or sometimes causes painful movements. Usually, older people suffer more from movement disorders.
In option A, progesterone is a hormone responsible for the menstrual cycle in females. It also acts as an important contributor in females during pregnancy. Moreover, it is being studied that around the age of 45 women suffer early osteoporosis. Women undergo menopause around the age of 45 to 50. Progesterone levels decrease as no menstruation takes place. This is related to the early appearance of osteoporosis. The bones weaken and become susceptible to damage. But locomotion is not much related to a decreased level of progesterone.
In option B the accumulation of uric acid crystals causes gout. When the uric acid crystals get deposited between the joints, it leads to painful conditions accompanied by various severe consequences. Inflammatory arthritis appears due to this accumulation causing intermittent swelling, redness, pain, stiffness, and heat in the joints. This makes locomotion very difficult.
In option C the vertebral column consists of 33 vertebrae in humans. Out of these 33 vertebrae, 27 are presacral vertebrae, 7 are cervical vertebrae, 12 are thoracic, and 5 are lumbar vertebrae. These constitute the spine of the body.
In option D the fibrous joint is a type of fixed joint having no role in locomotion. It is present in the bones of the skull. On the other hand in the bones of the vertebrae synovial joint is present that helps to make it movable.
Hence, the right answer is option B.

Note: Such types of questions need to be analyzed properly before answering. The functioning and position of each anatomical unit should be studied. Moreover, to avoid gout one should get rid of fizzy drinks. Baking soda is beneficial in curing gout.