Question

The secretion of lacrimal gland is
a. Watery
b. Acidic
c. Оily
d. Alkaline

Answer 1

In humans, lacrimal glands are a pair of almond shape glands, which are exocrine that are present one on each side of the eye, and they secrete tears and this is situated in the upper lateral region of each orbit that too in the lacrimal fossa of the orbit.

Complete answer:
- The lacrimal gland is divided into 2 sections which are the palpebral lobe and orbital lobe.
- The smaller one is the palpebral lobe, which lies close to the inner surface of the eyelid, and if an upper eyelid is everted this portion can be easily appreciated.
- When coming to another lobe which is the orbital lobe, which generally consists of fine interlobular ducts that connect the orbital lobe to the palpebral lobe, and this unite to form three to five main secretory ducts, and this ducts again join in the palpebral portion, before the secretions of the gland reach the surface of the eye.
- When coming to the histology of the lacrimal gland, they are mainly composed of tubuloacinar structures, and this is made up of lobules which are separated by connective tissue where each lobule contains many acini.
- They are also composed of large serous cells that produce the watery serous secretions.
- Each acinus in the lacrimal gland has a grape-like mass called gland cells and their apices are all pointed towards the central lumen.

Hence, the correct answer is option (A).

Note: In case if the lacrimal gland produces less lacrimal secretions, this generally happens during conditions such as aging, and also by taking some medications, these glands cause dryness and scratching, and burning which are the signs of dry eye syndrome.