L5- Body Cavity Flashcards
two subdivisions which are continuous with each other
dorsal body cavity
2 dorsal body cavity
- cranial cavity
- spinal cavity
space inside the bony skull
cranial cavity
extends from the cranial cavity to the end of the spinal cord
spinal cavity
(larger than the dorsal cavity) contains all the structures within the chest and the abdomen, the visceral organs in those regions
ventral body cavities
3 types of ventral cavities
- thoracic cavity
- mediastinum cavity
- abdominoplevic cavity
separated from the rest of the ventral cavity by a dome-shaped muscle, diaphragm
thoracic cavity
central region which separates the lungs into right and left cavities in the thoracic cavity
mediastinum
cavity inferior to the diaphragm
abdominapelvic cavity
contains the reproductive organs
pelvic cavity (bladder and rectum)
line the trunk cavities and cover the organs of these cavities
serous membranes
two serous membrane
- visceral serous membrane
- parietal serous membrane
inner part of the serous membrane
visceral serous membrane
outer part of the serous membrane
parietal serous membrane
surrounds the heart
pericardial cavity
covers the heart
visceral pericardium
forms the outer layer of the sac around the heart
parietal pericardium
fluid filling the pericardial cavity
pericardial fluid
surrounds each lung
two pleural cavaties
1. visceral pleura
2. parietal pleura
covers the lung
visceral pleura
lines the inner surface of the thoracic wall, the lateral surfaces of the mediastium, and the superior surface of the diaphragm
parietal pleura
-a serous membrane-lined cavity in the abdominopelvic cavity
- located between the visceral peritoneum and pariental peritoneum and contains peritoneal fluid
peritoneal cavity
covers many of the organs of the abdominopelvic cavity
visceral peritoneum
lines the wall of the abdominopelvic cavity and the inferior surface of the diaphragm
parietal peritoneum