Explanation:
Let's go through each number on the diagram and match it to the correct part of the skeletal system based on the descriptions.
1. The part of the skull that encloses the brain: This is the cranium, which is the upper and back part of the skull that protects the brain. So, number 1 is the cranium.
2. The strongest and lowest bone in the human face: The strongest bone in the face is the mandible, which is the lower jawbone. It is also the lowest bone in the face. So, number 2 is the mandible.
3. The bone that connects the humerus with the clavicle: The clavicle is the collarbone, and the humerus is the upper arm bone. The bone that connects them is the scapula (shoulder blade). So, number 3 is the scapula.
4. An arrangement of bones in the thorax of vertebrates: The thorax contains the rib cage, which is made up of ribs and the sternum. This is called the thoracic cage. So, number 4 is the thoracic cage.
5. A long horizontal bone present in the forearm: The forearm has two bones: the radius and the ulna. The long horizontal bone that runs from the elbow to the wrist is the radius. So, number 5 is the radius.
6. Interlocking bones that form the spinal column: The spinal column is made up of vertebrae, which are the bones that stack on top of each other. So, number 6 is the vertebrae.
7. The part of the vertebral body to which the legs attach: The part of the spine where the legs attach is the sacrum, which is at the base of the spine. So, number 7 is the sacrum.
8. A triangular arrangement of bone that makes up the very bottom portion of the spine below the sacrum: This is the coccyx, also known as the tailbone. It is triangular and at the bottom of the spine. So, number 8 is the coccyx.
9. The longest and strongest bone in your body: This is the femur, or thigh bone. It is the longest and strongest bone in the human body. So, number 9 is the femur.
10. A thick, circular-triangular bone which articulates with the femur and covers and protects the anterior articular surface of the knee joint: This is the patella, or kneecap. It is a triangular bone that protects the knee joint. So, number 10 is the patella.
11. Also known as the shinbone or shankbone: This is the tibia, which is the larger bone in the lower leg. So, number 11 is the tibia.
12. A leg bone located on the lateral side of the tibia, with which it is connected above and below: This is the fibula, which runs alongside the tibia. So, number 12 is the fibula.
Final Answer:
1. cranium
2. mandible
3. scapula
4. thoracic cage
5. radius
6. vertebrae
7. sacrum
8. coccyx
9. femur
10. patella
11. tibia
12. fibula
Parent Tip: Review the logic above to help your child master the concept of skeletal system worksheet middle school.
