HESI A2 A&P: The Skeletal System
The skeletal system provides the body's framework and plays several important roles beyond simply supporting the body. Understanding its major functions and structures can help when reviewing Anatomy and Physiology for the HESI A2.
Major Functions of the Skeletal System
The skeletal system helps with:
- Support
- Protection
- Movement
- Mineral storage
- Blood cell production
Bones also provide attachment points for muscles.
Bones Protect Important Organs
The skeleton provides physical protection for several organs. For example:
- The skull protects the brain.
- The rib cage helps protect the heart and lungs.
- The vertebral column protects the spinal cord.
Understanding these relationships can make anatomy easier to remember.
Bone and Movement
Bones work with muscles and joints to produce movement. Muscles attach to bones through tendons, and joints allow different bones to move relative to one another. This means the skeletal and muscular systems should be studied together.
Bone Marrow
Bone marrow is found within certain bones. Red bone marrow is involved in blood cell production. This is an important connection between the skeletal and circulatory systems.
Joints
A joint is where two or more bones meet. Different joints allow different types and ranges of movement. Examples include:
- Hinge joints
- Ball-and-socket joints
- Pivot joints
Learning examples can help you connect structure with movement.
Study Major Bones
When preparing for HESI A2 A&P, review commonly referenced bones such as:
- Femur
- Humerus
- Tibia
- Fibula
- Radius
- Ulna
- Vertebrae
- Sternum
- Ribs
Use diagrams and practice labeling them.
Final Takeaway
Don't memorize the skeletal system as one long list of bones. Study the functions of the skeleton, major anatomical structures, joints, and how the skeletal and muscular systems work together.
