Body Cavities 2
Terms
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- open body cavities
- those opening to the outside of the body
- mucous membranes (mucosa)
- those membranes lining open body cavities
- mucus
- a thick viscous fluid, lines free surfaces thus protecting against dehydration, abrasion, strong acids and bases
- closed body cavities
- those that don't open to the outside of the body; don't have mucous membrane, has serous membrane
- Dorsal body cavities
- Cranial cavity and Vertebral (spinal) canal or cavity
- What structure separates the thoracic from the abdominopelvic cavity?
- Diaphragm
- Ventral body cavities
- Thoracic cavity: Pleural cavities, Pericardial cavity; Abdominopelvic cavity: Abdominal cavity, Pelvic cavity
- Thoracic cavity
- chest cavity; superior portion of the ventral body cavity; contain pleural and pericardial cavities and mediastinum
- Pleural cavities
- surrounds each lung; serous membrane is called pleura
- Pleura
- Serous membrane in pleural cavities
- Pericardial cavity
- surrounds the heart; serous membrane is called pericardium
- Pericardium
- Serous membrane in pericardial cavity
- Abdominopelvic cavity
- inferior portion of ventral body cavities
- Abdominal cavity
- stomach, spleen, liver, gallbladder, small intestines, and most of large intestine; serous membrane called peritoneum
- Peritoneum
- Serous membrane in abdominal cavity
- Pelvic cavity
- unrinary bladder, part of large intestines and internal organs of reproduction
- Cranial cavity
- formed by cranial bones and contain brain
- Vertebral (spinal) canal or cavity
- formed by vertebral column & contain spinal cord and beginning of a spinal nerves
- Serous membrane (serosa)
- those membranes lining closed body cavities and their organs
- Serous fluid
- inside the closed body cavities to fill up the space
- mediastinum
- space between the lungs, is not a true body cavity, is divided into sections containing organs such as the heart, thymus, aorta, trachea, and esophagus