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Body Cavities Two sets of body cavities dorsal and ventral body cavities Dorsal body cavity Has two subdivisions which are Cranial cavity and Spinal cavity1.Cranial cavitya.Houses the brain2.Spinal cavitya.Houses the spinal cordVentral body cavity Has 3 subdivisions and which are Thoracic cavity, abdominal cavity and pelvic cavity (ventral body cavity also houses the diaphragm!)1.Thoracic cavitya.contains the lungs, heart and mediastinum 2.Abdominal cavitya.contains the stomach,liver and intestines3.Pelvic cavitya.Contains reproductive organs,bladder and rectumIntegumentary systemExternal covering (skin)-waterproofs (the skin)- cushions and protects the deeper tissues-excretes salts and urea- helps regulate body temp-has pain and pressure receptorsSkeletal System
Bones -cartilage - joints- provides framework -stones minerals-produce blood cells (hematopoiesis)-Protects organs (ie skull)Muscular systemMovement-3 types smooth, skeletal and cardiacNervous systemBody's fast acting control mechanism -consists of