Body Planes Introduction Orientation and Directional Terms Orientation

Body Planes Introduction

Orientation and Directional Terms

Orientation and Directional Terms

Orientation and Directional Terms

Regional Terms

Regional Terms

Body Planes and Sections

Body Planes and Sections n Coronal (frontal) plane - Lies vertically and divides body into anterior (front) and posterior (back) parts

Body Planes and Sections n Sagittal plane – lies vertically and divides the body into left and right sides. ¨ Median (midsagittal) plane - Specific sagittal plane that lies vertically in the midline

Body Planes and Sections n Transverse plane - runs horizontally and divides body into superior (up) and inferior (down) parts

Body Cavities and Membranes n n Dorsal body cavity Cavity subdivided into: ¨ Cranial cavity houses the brain. ¨ Vertebral cavity runs through the vertebral column and encloses the spinal cord

Body Cavities and Membranes n Ventral body cavity – subdivided into: ¨Thoracic cavity – divided into three parts ¨Abdominopelvic cavity – divided into two parts

Body Cavities and Membranes n Ventral body cavity – subdivided into: ¨Thoracic cavity – divided into three parts n Two lateral parts each containing a lung surrounded by a pleural cavity n Mediastinum – contains the heart surrounded by the pericardial sac

Body Cavities and Membranes n Ventral body cavity ¨Abdominopelvic cavity – divided into 2 parts n Abdominal cavity – contains the liver, stomach, kidneys, and other organs n Pelvic cavity – contains the bladder, some reproductive organs, and rectum

Body Cavities and Membranes n Serous cavities – a slit-like space lined by a serous membrane ¨ Pleura, n n pericardium, and peritoneum Parietal serosa – outer wall of the cavity Visceral serosa covers the visceral organs

Body Cavities and Membranes