The sense organ which belongs to the integumentary system of our body is :

1. Eyes
2. Tongue
3. Ears
4. Skin

Which of the following tissues stores fat in the lower parts of dermis?

1. Stratified epithelium
2. Connective tissue
3. Adipose tissue
4. Muscular tissue

The principal heat-regulating centre of our body is located in:

1. Hypothalamus
2. Cerebrum
3. Thalamus
4. Cerebellum

The activity of the mammary glands is related to which reproductive hormone:

1. Progesterone
2. Prolactin
3. Oestrogen
4. Testosterone