Egyptian culture was the first to produce leavened bread, and leavened bread was a symbol of Egyptian culture. This did not mean that unleavened bread disappeared from the Egyptian diet (when Jews â or others â said, âOn all nights we eat leavened and unleavened bread,â they meant what they said), but leavened bread was preferred.
The ribcage, also called the thoracic cage, is a bony structure made up of the rib bones and their connective tissues. The ribcage forms part of the bodyâs respiratory system.
The skeletal system does the following main functions: 1. The skeletal system protects vulnerable organs such as the brain (protected by the skull) and the heart (protected b â¦ y the rib cage). 2. Bones act as levers to magnify the motion of muscles.3. Bones give the body its shape.4. Bone marrow produces blood cells (both red and white).he skeletal system does the following main functions: 1. The skeletal system protects vulnerable organs such as the brain (protected by the skull) and the heart (protected b â¦ y the rib cage). 2. Bones act as levers to magnify the motion of muscles.