# Coordinate Systems Flashcards Preview

## Biomechanics Exam 2 > Coordinate Systems > Flashcards

Flashcards in Coordinate Systems Deck (40)
1
Q

Divides: Right and Left

A

Sagittal Plane

2
Q

Divides: Anterior-Posterior

A

Frontal (Corona) Plane

3
Q

Divides: Superior-Posterior

A

Transverse Plane

4
Q

Cartesian coordinate system is aka (2)

A

Orthogonal or Rectangular coordinate system

5
Q

Orthogonal coordinate system means what?

A

Its coordinating surfaces meet at right angles to another.

6
Q

What are the 3 axes of motion?

A

x, y, and z

7
Q

How are the 3 axes of motion formed?

A

By the junction of 2 planes

8
Q

The movement in a STRAIGHT LINE ALONG and axis.

A

translation

9
Q

Movement occurs AROUND and axis.

A

rotation

10
Q

What is the most common motion in the body?

A

Coupled movment

11
Q

Coupled movement aka?

A

Curvilinear motion

12
Q

Coupled motion combines what two movements?

A

Rotation and translation

13
Q

How many “degrees of freedom” are there?

A

6

14
Q

The potential exists for each joint to exhibit _______ movements and ________ rotational movements.

A

3 translational

3 rotational

15
Q

The x-axis is the junction of what two planes?

A

Coronal and transverse

16
Q

The Y-axis is the junction of what two planes?

A

Coronal and sagittal

17
Q

The Z-axis is the junction of what two planes?

A

Sagittal and transverse

18
Q

Always horizontal side to side - axis?

A

x-axis

19
Q

Always vertical - axis?

A

Y-axis

20
Q

Perpendicular to X, front to back - axis?

A

Z-axis

21
Q

X-axis translation: + is towards _____, - is towards ______.

A

Left,

right

22
Q

Y-axis translation: + is towards ____. = towards ____.

A

Superior

Inferior

23
Q

Z-axis translation: + toward _____. - toward _____.

A

Anterior

posterior

24
Q

Lateral glide right to left is what kind of translation?

A

Positive X translation

25
Q

Lateral glide left to right is what kind of translation?

A

Negative X translation

26
Q

Distraction is what motion? What kind of translation?

A

Inferior to superior.

Positive Y translation.

27
Q

Compression is what motion? What kind of translation?

A

Superior to inferior.

Negative Y translation.

28
Q

P-A glide is aka?

A

anterolisthesis

29
Q

A-P glide is aka?

A

retrolisthesis

30
Q

Anterolisthesis is what kind of translation?

A

Positive Z translation

31
Q

Retrolisthesis is what kind of translation?

A

Negative Z translation

32
Q

3-D Cartesian coordinate system Rotation aka?

A

“right handed system”

33
Q

Flexion of spine is what kind of rotation?

A

Positive theta X

34
Q

Extension of spine is what kind of rotation?

A

Negative theta X

35
Q

Left axial rotation is what kind of rotation?

A

Positive theta Y

36
Q

Right axial rotation is what kind of rotation?

A

Negative theta Y

37
Q

Right lateral flexion is what kind of rotation?

A

Positive theta Z

38
Q

Left lateral flexion is what kind of rotation?

A

Negative theta Z

39
Q

Two motions coupled at once is called what?

A

Coupled motion

40
Q

What are the coupled motions of vertebral motion?

A
```Anterior translation (positive Z axis)
Flexion (positive theta X)```