Review sheet 11 articulations and body movements – Embark on a journey through the intricate world of human movement with our comprehensive review sheet on 11 articulations and body movements. From the gliding motions of synovial joints to the complex coordination of muscular contractions, this guide unveils the mechanics that govern our physical abilities.
Delve into the intricacies of articulations, exploring their diverse types, functions, and the examples that illustrate their significance. Discover the symphony of body movements, understanding the muscles that orchestrate them and the range of motion they empower.
Articulations
Articulations, also known as joints, are the points of contact between two or more bones. They allow for movement and flexibility in the body. There are three main types of articulations:
- Synarthroses: These are immovable joints that do not allow for any movement. Examples include the joints between the bones of the skull and the joints between the teeth and the jawbone.
- Amphiarthroses: These are slightly movable joints that allow for a small amount of movement. Examples include the joints between the vertebrae in the spine and the joints between the ribs and the sternum.
- Diarthroses: These are freely movable joints that allow for a wide range of motion. Examples include the joints between the bones of the limbs and the joints between the bones of the fingers and toes.
Body Movements
Body movements are the result of the coordinated action of muscles and joints. There are many different types of body movements, each with its own unique set of muscles and range of motion.
- Flexion: This is the bending of a joint, such as bending the elbow or knee.
- Extension: This is the straightening of a joint, such as straightening the elbow or knee.
- Abduction: This is the movement of a limb away from the midline of the body, such as raising the arm out to the side.
- Adduction: This is the movement of a limb towards the midline of the body, such as bringing the arm down to the side.
- Rotation: This is the turning of a limb around its own axis, such as rotating the head from side to side.
- Circumduction: This is a combination of flexion, extension, abduction, and adduction, such as swinging the arm in a circle.
Review Sheet: Review Sheet 11 Articulations And Body Movements
*Articulations
| Type of Articulation | Function | Examples ||—|—|—|| Synarthrosis | Immovable | Skull, teeth || Amphiarthrosis | Slightly movable | Spine, ribs || Diarthrosis | Freely movable | Limbs, fingers, toes |Body Movements| Type of Movement | Muscles Involved | Range of Motion ||—|—|—|| Flexion | Biceps, hamstrings | Bending || Extension | Triceps, quadriceps | Straightening || Abduction | Deltoids, gluteus medius | Moving away from midline || Adduction | Pectorals, adductors | Moving towards midline || Rotation | Rotator cuff, neck muscles | Turning around axis || Circumduction | Combination of flexion, extension, abduction, adduction | Swinging in a circle |
Quick FAQs
What are the main types of articulations?
Synovial, cartilaginous, and fibrous joints.
Which muscles are involved in flexion of the elbow joint?
Biceps brachii and brachialis.
What is the range of motion for the shoulder joint?
Approximately 180 degrees of flexion, 120 degrees of abduction, and 90 degrees of external rotation.
