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Muscular dystrophy

Progressive degeneration of skeletal muscle mostly due to genetic disorder is muscular dystrophy.

Tetany is muscular spasm due to low calcium in body fluid.

Myasthenia gravis is an anto immume disorder leading to paralysis of skeletal muscles.

Botulism is rare and dangerous type of food poisoning caused by bacterium Clostridium Botulinum.

132.

Select the correct option.

11^th and 12^th pairs of ribs are connected to the sternum with the help of hyaline cartilage.
Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.
There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.
8^th, 9^th and 10^th pairs of ribs articulate directly with the sternum.