Directional Terms
Anatomical Position Orientation
Muscle Actions
Organizational Approaches to the Nervous System
Body Planes
100

From a low position, also referred to as caudal

What is inferior?

100

This standard position assumes the body is upright, facing forward, with palms facing forward.

What is the anatomical position?

100

This muscle action increases the angle between two body parts.

What is extension?

100

This approach organizes the nervous system based on sensory input, integration, and motor output.

What is the functional approach?

100

Divides the body into left and right halves

What is the sagittal plane?

200

From a high position and can also be called cranial

What is superior?

200

This orientation is frequently used in neurology and differs from standard anatomical orientation.

What is neurological orientation?

200

This muscle action decreases the angle between two body parts.

What is flexion?

200

This approach organizes the nervous system based on sensory input, integration, and motor output.

What is the functional approach?

200

Divides the body into superior and inferior portions

What is the transverse plane?

300

Toward the body’s midline

What is medial?

300

This orientation is commonly used by healthcare providers when examining a patient.

What is clinical orientation?

300

This movement moves a body part away from the midline.

What is abduction?

300

This approach organizes the nervous system by physical structures such as the CNS and PNS.

What is the anatomical approach?

300

Divides the body into anterior and posterior portions

What is the frontal/ coronal plane?

400

Away from the body’s midline

What is lateral? 

400

In neurological orientation, this term refers to the top of the brain.

What is dorsal?

400

This movement brings a body part toward the midline.

What is adduction?

400

This system controls voluntary muscle movement.

What is the somatic nervous system?

400

Divides the body exactly at the midline

What is the midsagittal plane?

500

Describes structures on opposite sides of the body

What is contralateral?

500

In neurological orientation, this term refers to the bottom of the brain.

What is ventral?

500

This movement describes rotating a limb inward toward the body’s midline.

What is medial rotation?

500

This system regulates involuntary functions such as heart rate and digestion.

What is the autonomic nervous system?

500

Divides the body into unequal left and right sections

What is the parasagittal plane?