Decreased level of oestrogen in the human body leads to:

What is a sprain?

Match the following columns and select the correct option:

Column $I$	Column $II$
$(a)$ Gout	$(i)$ Decreased levels of estrogen
$(b)$ Osteoporosis	$(ii)$ Low $Ca^{2+}$ ions in the blood
$(c)$ Tetany	$(iii)$ Accumulation of uric acid crystals
$(d)$ Muscular dystrophy	$(iv)$ Autoimmune disorder
	$(v)$ Genetic disorder

Which of the following is a correct match for disease and its symptoms?

Match List-$I$ with List-$II$ and select the correct option.

List-$I$	List-$II$
$a$. Tetany	$i$. Autoimmune disorder
$b$. Osteoporosis	$ii$. Progressive degeneration of skeletal muscle
$c$. Muscular dystrophy	$iii$. Inflammation of joints
$d$. Arthritis	$iv$. Rapid spasms in muscle
$e$. Myasthenia gravis	$v$. Decreased bone mass

Assertion: Inflammation of a skeletal joint may immobilize the movements of the joint.
Reason: Uric acid crystals in the joint cavity and ossification of articular cartilage lead to this.