Bio 201 Chapter 1: Body Planes

Sagittal

median plane

Midsagittal

divide into equal halves

Parasagittal

divide into unequal halves

Transverse

horizontal plane

Frontal

coronal plane

Oblique

divide at an angle

Cranial cavity

formed by cranial bones, contains brain

Vertebral cavity

Thoracic cavity

Pleural cavity

Pericardial cavity

Mediastinum

Abdominopelvic cavity

Abdominal cavity

Pelvic cavity

Serous membrane

covers viscera (organs in thoracic and abdominal cavities)

Parietal layer

epithelium that lines body cavities

Visceral layer

epithelium that covers and adheres to the viscera

Pleura

serous membrane (both types for the plural cavity

Pericardium

serous membrane (both types) for the pericardial cavity

Peritoneum

serous membrane (both types) for the abdominal cavity

Abdominopelvic quadrants

vertical (median) and horizontal (transumbilical) lines pass through the umbilicus (navel) creating four quadrants

Right upper quadrant (RUQ)

liver

Left upper quadrant (LUQ)

spleen, left kidney

Right lower quadrant (RLQ)

appendix

Left lower quadrant (LLQ)

left ovary

Abdominopelvic regions

divided into 9 regions by vertical midclavicular lines, subcostal lines and transtubercular line