What is the secretion of the sebaceous gland?

The human skeletal system consists of:

Analogy type questions:
$(1)$ Active site for actin is present on the tail of myosin / head of myosin.
$(2)$ Movement of body parts in living organisms is induced / spontaneous.

When the entire sole rests on the ground during walking as in the case of a man,it is known as

How many organ systems are integrated for locomotion in humans?
Nervous system,Endocrine system,Muscular system,Skeletal system,Circulatory system

We swing our arms while walking for $......$.