Skeleton Quiz

The average human body has 206 bones. This is the correct answer because the skeletal system of an adult human consists of 206 bones, including bones in the skull, spine, ribs, arms, legs, and other parts of the body. While the number of bones can vary slightly from person to person, 206 is the average number of bones found in the human body.

The cranium is the correct answer because it is the part of the skull that surrounds and protects the brain. It is a hard, bony structure that acts as a protective casing for the delicate brain tissues, shielding it from injury and trauma. The cranium is made up of several bones, including the frontal, parietal, temporal, and occipital bones, which together form a strong and sturdy enclosure for the brain. Calcium is not the correct answer because while calcium is important for bone health, it does not specifically protect the brain. The cerebrum and cerebellum are parts of the brain itself, not bones.

The rib cage is a protective structure that surrounds and encloses the heart and lungs. It acts as a barrier, shielding these vital organs from external impact and potential injuries. The ribs, along with the sternum and spine, form a strong and sturdy cage-like structure that provides support and protection to the heart and lungs, ensuring their proper functioning and preventing any damage that could be caused by accidents or trauma.

Calcium and phosphorous are the main minerals that contribute to the strength of bones. These minerals provide the necessary structural support and density to bones, making them strong and rigid. Calcium is responsible for the hardness of bones, while phosphorous helps in forming the mineral matrix that gives bones their strength. Together, calcium and phosphorous work synergistically to maintain the integrity and strength of bones.

The skull not only protects the brain but also safeguards the sense organs. The sense organs, which include the eyes, ears, nose, and mouth, are essential for perceiving and interpreting the external environment. The skull's rigid structure acts as a protective barrier for these delicate organs, preventing damage from external forces and potential injuries.

The given statement "Bone is dry and non-living supporting structure" is incorrect because bones are actually living tissues that contain blood vessels and cells. They are not dry and provide support to the body as well as protect organs.

The skeleton system refers to all the bones in the body and the tissue that connects them. This includes ligaments, tendons, and cartilage. It provides support, protection, and structure to the body, allowing for movement and serving as an anchor for muscles. The skeleton system also plays a vital role in producing blood cells, storing minerals, and regulating calcium levels in the body.