test- 1 planes of motion & axis of rotation Flashcards
Planes of motion
- imaginary two-dimensional surface through which a limb or body segment is moved
- motion through a plane revolves around an axis
-there is a 90-degree relationship between a plane of motion and its axis
3 basic Cardinal planes
- anteroposterior / sagittal plane
- lateral/ frontal plane
-transverse/ horizontal plane
Anteroposterior / sagittal plane (AP)
-divides the body into equal bilateral segments
- divides body into halves (left and right)
Examples of motion through Sagittal plane
- sit up
fontal/ lateral plane
Divides the body into front (anterior) and back (posterior) halves
Examples of motion through the frontal plane
jumping jacks
transverse/ horizontal plane
divides the body into top (superior) and Bottom (inferior) halves
examples of motion through the transverse plane
-spinal rotation to the left or right
Axes of rotation
- for movement to occur in a plane, it must turn or rotate about an axis
The three axis
- Anteroposterior (ap) aka Sagittal
- Mediolateral (ML) aka frontal
- vertical/ long
Mediolateral axis
-has the same orientation as frontal plane of motion and runs side to side, perpendicular to sagittal plane of motion
- commonly includes flexion and extension movements
- think of it as the x axis
sagittal or anteroposterior (AP)
-same orientation as sagittal plane of motion, runs from front to back
-perpendicular to frontal plane of motion
-runs front to back
-commonly includes abduction, adduction movements
- think of it as a z axis
Vertical or longitudinal axis
-runs straight down through top of head and is perpendicular to transverse plane of motion
- runs top to bottom
-commonly includes internal & external rotations movements
-the Y axis
