Anatomy & Physiology

Each region has a bony skeleton attached. Which will have muscle attachment, which permits movement.

Body cavities:

1. Dorsal cavity
Framework: Cranium, vertebrae
Contents - brain, spinal cord
2. Thoracic cavity
Framework: ribs, sternum, thoracic vertebrae, diaphragm
Contents: heart, lungs, pleura, thymus, esophagus, trachea, bronchi, major vesicles
3. Abdominal cavity
Framework: diaphragm, lumbar vertebrae, abdominal muscle.
Contents: stomach, intestines, liver, pancreas, gallbladder, spleen, aorta, venacavias
4. Pelvic cavity
Framework: pelvic bones, sacrum, and abdominal muscles.
Contents: Kidneys, bladder, ovaries, uterus, vagina, testicles not dropped, colon, rectum, anus


Structural units of the body

Cell - the smallest functional unit of the body
Tissue - Collection of cells having similar functions and structure
Organ - Collection of tissues having similar functions and structure
Systems- group of organs having similar functions and structure
Or...