Assertion (A): Semi-circular canals are present in the middle ear and they contain sensory cells responsible for the static balance of the body.

Reason (R): One end of each of the three semi-circular canals is widened to form an ampulla which contains the sensory cells for dynamic balance.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion (A): The tube/canal which transmits the air currents from the pinna to tympanum is termed as eustachian tube.

Reason (R): The eustachian tube equalizes the air pressure on either side of the ear drum allowing it to vibrate freely.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion (A): Hormones are the secretions from some glandular parts of the body which regulate certain physiological processes by chemical means.

Reason (R): Hormones are directly poured into the target organs which are usually very close to the source/gland secreting the hormones.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion (A): Adrenal medulla secretes glucocorticoids which regulate glucose levels of the blood.

Reason (R): Glucocorticoids, a kind of cortisone, stimulate the deposition of extra glucose in blood as glycogen in the liver and muscles. The roles of insulin and glucocorticoids are the same.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.