Physiology Questions and Answers| Latest Update
Longitudinal Section A cut through the long axis of an organ
Transverse/Cross Section A cut at a right angle to the long axis
Oblique Section A cut made across the long axis at other than a right angle
The trunk contain 3 cavities: - The thoracic cavity
- The abdominal cavity
- The pelvic cavity
Thoracic cavity Surrounded by the ribs and separated from the abdominal cavity by the
diaphragm. Divided into right and left by the mediastinum.
Mediastinum The mediastinum is a partition containing the heart, thymus, trachea,
esophagus, and other structures. The lungs are on each side of the mediastinum
Abdominal cavity Bounded by the abdominal muscles. Contains stomach, intestines, liver,
spleen, pancreas, kidneys.
, Pelvic cavity Contained by the bones of the pelvis and contains the urinary bladder, part
of large intestine, and internal reproductive organs.
Abdominopelvic cavity Abdominal and pelvic cavities are not physically separated and
are sometimes referred to as the...
Serous membrane Slippery double-layered membrane which covers the viscera within the
thoracic and abdominal cavities and also lines the walls of thorax and abdomen.
Parietal serous membrane Part of serous membrane that lines the outer walls of the
cavities
Visceral serous membrane Part of serous membrane that covers and adheres to the walls
within the cavities.
Serous fluid A small amount of fluid between the two layers that reduces friction
Pleura cavity The serous membrane of the pleural cavities which has 2 layers: visceral
pleura and parietal pleura
Visceral pleura Clings to the surface of the lungs
Parietal pleura Lines inner surface of the mediastinum, and superior surface of the
diaphragm