Body Planes, Directions, and Cavities- Health Science

Body Planes

imaginary lines drawn through the body at various parts to separate the body into sections

Transverse Plane

a horizontal plane that divides the body into a top half and a bottom half

Superior

body parts above other parts

Inferior

body parts below other parts

Cranial

body parts located near the head

Caudal

body parts located near the sacral region of the spinal column

Midsagittal(median)

divides the body into right and left sides

Medial

body parts close to the midline, or plane

Lateral

body parts away from the midline

Frontal(coronal) plane

divides the body into a front and a back section

Ventral or Anterior

body parts in front of the plane, or on the front of the body

Dorsal or Posterior

body parts on the back of the body

Proximal

body parts close to the point of reference

Distal

body parts distant from the point of reference

Body Cavities

spaces within the body that contain vital organs

Dorsal Cavity

one long, continuous cavity located on the back of the body

Cranial Cavity

contains the brain

Spinal Cavity

contains the spinal cord

Ventral Cavities

larger than the dorsal cavity and has two distinct cavities separated by the diaphragm.

Thoracic Cavity

located in the chest and contains the esophagus, trachea, bronchi, lungs, heart, and large blood vessels

Abdominal Cavity

Contains the stomach, small intestine, most of the large intestine, appendix, liver, gallbladder, pancreas, and spleen

Pelvic Cavity

contains the urinary bladder, the reproductive organs, and the last part of the large intestine

Orbital Cavity

for the eyes

Nasal Cavity

for the nose structures

Buccal Cavity

or mouth, for the teeth and tongue

Abdominal Regions

a more precise method of division is into nine