Question

a) Define emulsification. b)Mention different types of permanent teeth with their functions. c) Write the functions of villi. Where are they present?

Answer 1

Answer:

a) Emulsification, or to emulsify something, is defined as the mixing of two liquids that usually are unmixable together to form an emulsion.

b) There are 4 types of teeth in the oral cavity: Incisors – The four front teeth in both the upper and lower jaws are called incisors. Their primary function is to cut food. The two incisors on either side of the midline are known as central incisors.

c) Villi are specialized for absorption in the small intestine as they have a thin wall, one cell thick, which enables a shorter diffusion path. They have a large surface area so there will be more efficient absorption of fatty acids and glycerol into the blood stream.Villi is present on small intestine.

Answer 2

Explanation:

The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, are present numerous blood vessels that absorb the digested food and carry it to the bloodstream. It is hence from the bloodstream, the absorbed food is delivered to each and every cell of the body.