Exploring the Human Skeletal System: Structure, Functions, and More
Classified in Biology
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Complete the statements.
- There are 206 bones in the skeletal system of an adult.
- Babies are born with almost 300 bones in their body.
- The largest bone in the body is the femur.
- The only floating bone is called the hyoid and it is located under the tongue.
- The skeletal system has two main jobs: protect and support.
Complete the table with the functions of the skeletal system.
| Function | Description |
|---|---|
| Protection | Protects internal organs from falls and other impacts. |
| Storage | Stores essential minerals like calcium and phosphorus. |
| Blood Cell Production | Produces blood cells in the bone marrow. |
| Support | Provides structural support for the entire body. |
| Movement | Facilitates movement in conjunction with muscles and joints. |
Label the parts of the skeletal system.
- Bones: They have blood vessels and nerves.
- Ligaments: They hold bones together.
- Cartilage: They allow movement without rubbing of bones.
- Minerals: They make bones strong and hard. Calcium is the most plentiful.
- Connective Tissue: They are made of collagen and withstand hits or bumps.
- Marrow: There are two types found in the center of bones.
Label the parts of the humerus bone.
- Cartilage
- Blood vessels
- Central cavity
- Compact bone
- Fibrous connective tissue
- Yellow bone marrow
- Spongy bone
Label the skull bones.
- Frontal
- Parietal
- Temporal
- Occipital
- Ethmoid
- Sphenoid
Label the bones correctly.
- Clavicle
- Sternum
- Humerus
- Radius
- Ulna
- Patella
- Tibia
- Fibula
- Tarsals
- Cranium
- Mandible
- Scapula
- Rib
- Vertebrae
- Sacrum
- Carpals
- Metacarpals
- Phalanges
- Femur
- Metatarsals
What are the two types of skeletons? Write about their function and bones they belong to.
Axial Skeleton
The axial skeleton protects vital organs. It includes bones of the skull, vertebral column, and rib cage.
Appendicular Skeleton
The appendicular skeleton allows for movement. It includes the bones of the shoulders, arms, pelvis, and legs.
Fill in the blank spaces with the types of joints.
- Joints can be classified by structure and function.
- The classification regarding texture is fibrous, cartilaginous, and synovial.
- The classification regarding movement is movable, slightly movable, and immovable.