Answer:
Both are breathing muscles
Explanation:
When rib muscles and the diaphragm contract they increase the volume of the chest cavity, increasing the air pressure outside the body, causing air to rush into the lungs to fill the vacuum created by the increase in volume.
Answer:
The correct answer will be option- B.
Explanation:
Synovial fluid is a clear slippery fluid which is present in the synovial cavity.
The synovial fluid helps the nourishment as it provides nutrients to the and oxygen to the hyaline cartilage of the bones as well as the lubrication of the cartilage surfaces due to the viscous nature like oil which lubricates the piston.
This smooth surface facilitates the smooth and painless movements between the bones, therefore, the Option-B is the correct answer.
<span>"Village" is the term used to refer to the first settlements formed as humans began domesticating plants and animals.
A village is comprised of a clustered human settlement or community, with a few hundred to a few thousand people. It is typically smaller than a town but larger than a hamlet and is usually a permanent settlement, with dwellings spaced closely from each other. The surrounding lands were usually farmed, but in the case of traditional fishing villages, they were located adjacent to fishing grounds as well. </span>
