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Body Cavities What’s in there?? Body Cavities: Spaces within the body which contain vital organs Dorsal (Posterior) Cavity: One long, continuous cavity that is located on the back of the body, divided into two sections 1. Cranial Cavity = contains the brain 2. Vertebral/Spinal Cavity = contains the spinal cord Ventral (Anterior) Cavities: 1. Thoracic Cavity = located in the chest – contains the heart in pericardial cavity, lungs in pleural cavities, mediastinum - the region between lungs from sternum to backbone that contains heart esophagus, trachea, etc. Ventral (Anterior) Cavities: 2a. Abdominal Cavity = upper abdominal cavity; contains the stomach, liver, small intestine, most of large intestine - also contains spleen & gallbladder 2b. Pelvic Cavity = lower abdominal cavity; contains urinary bladder, large intestine, rectum, male/female reproductive organs Abdominopelvic Cavity: 9 Regions • • • • • • Epigastric Umbilical Hypogastric Hypochondriac (right & left) Lumbar (right & left) Inguinal (right & left) Abdominopelvic Cavity: 9 Regions Epigastric Region • Superior to umbilical region • Contains stomach, liver (and some of large intestine) Umbilical Region • Center-most region, around the navel • Contains small intestine, large intestine (and some of the stomach) Hypogastric Region • Inferior to umbilical region • Contains small intestine, rectum, urinary bladder, reproductive organs, (and some of large intestine) Right & Left Lumbar Regions • Lateral to umbilical region • Contain part of small and large intestines Left Inguinal Region • Lateral (left) to hypogastric region • Contains part of small and large intestines Right Inguinal Region • Lateral (right) to hypogastric region • Contains appendix, part of small and large intestines Right & Left Hypochondriac Regions • Right Hypochondriac contains liver (and part of stomach) • Left Hypochondriac contains spleen (and part of stomach) Abdominopelvic Cavity: 9 Regions