Chickens do not need teeth. It is a muscular part of the stomach and uses grit small, hard particles of pebbles or sand to grind grains and fiber into smaller, more digestible, particles. From the gizzard, food passes into the small intestine
<span>The gizzard is why chickens do not need teeth. It is a muscular part of the stomach and uses grit (small, hard particles of pebbles or sand) to grind grains and fiber into smaller, more digestible, particles. From the gizzard, food passes into the small intestine, where nutrients are absorbed</span>
Appositional growth is the increase in the diameter of bones by the addition of bony tissue at the surface of bones. Osteoblasts at the bone surface secrete bone matrix, and osteoclasts on the inner surface break down bone. The osteoblasts differentiate into osteocytes.
