Structure of the Skin

Q. why is urine called excretion and tears and sweat secretion when all the three are basically waste products to the body?

Q. Carcinoma is a cancer that originate in

1. Lymphocytes
2. Connective tissue
3. Erythrocytes
4. Ectoderm and endoderm

Q.

Both the epidermis and the dermis are continuously shed and regenerated.

1. False

2. True

Q. The muscles of scrotum contracts when the outside temperature is low.

1. True
2. False

Q. The process of thermoregulation is concerned with which part of body?​

Q. Haversian canals of long bones have

1. Some bone cells, fat and areolar tissue
2. One vein and one artery
3. All of the above
4. One nerve and one lymphatic

Q. why is urine called excretion and tears and sweat secretion when all the three are basically waste products to the body?