THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -On the sides of the abdomen the other six regions are the left and right hypochondriac regions, on either side of the epigastrium; the left and right lumbar flank regions, on either side of the umbilical region, and the left and right iliac or inguinal regions on either side of the hypogastrium.

Detailed explanation-2: -The two main cavities are called the ventral and dorsal cavities. The ventral is the larger cavity and is subdivided into two parts (thoracic and abdominopelvic cavities) by the diaphragm, a dome-shaped respiratory muscle.

Detailed explanation-3: -There are three planes of the body: Coronal (frontal) plane: separates the front (anterior) and back (posterior) of the body. Sagittal (longitudinal) plane: separates the left and right sides of the body. Transverse (axial) plane: separates the upper (superior) and lower (inferior) halves of the body.

Detailed explanation-4: -A coronal or frontal plane divides the body into dorsal and ventral (back and front, or posterior and anterior) portions. A transverse plane, also known as an axial plane or cross-section, divides the body into cranial and caudal (head and tail) portions.