Which statement is true?
Bones are organ systems.
Bones provide shape to the body.
Bones help the heart pump blood.
Bones are composed of a single layer.
The statement that is true is: "Bones provide shape to the body."
The statement that is true is:
Bones provide shape to the body.
The statement that is true among the options given is "Bones provide shape to the body." To determine the correct answer, let's analyze each statement:
1. "Bones are organ systems": This statement is not true. Organ systems are composed of different organs working together to perform specific functions in the body, such as the respiratory system or the digestive system. While bones are organs, they do not constitute an organ system on their own.
2. "Bones provide shape to the body": This statement is true. One of the primary functions of bones is to provide structure and support to the body. They give the body its shape, allow movement, protect vital organs, and provide a framework for muscles and tissues to attach to.
3. "Bones help the heart pump blood": This statement is false. The heart is responsible for pumping blood throughout the body; bones do not play a direct role in this process.
4. "Bones are composed of a single layer": This statement is also false. Bones are complex structures made up of multiple layers. The outer layer is called the compact bone, which is dense and hard. The inner layer is called the cancellous bone or spongy bone, which is more porous in nature.
So, the correct statement is "Bones provide shape to the body."