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MEDTR110 Chap2
Cavities in the Body
10
Medical
Undergraduate 1
03/16/2024

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Term
Abdominal Cavity
Definition

Space below the chest containing organs such as the liver, stomach, gallbladder, and intestines

(also called abdomen or peritoneal cavity)

Term
Cranial Cavity
Definition
Space in the head containing the brain and surrounded by the skull 
Term
Diaphragm
Definition
Muscles separating the abdominal and thoracic cavities. It moves up and down and aids in breathing.
Term
Mediastinum
Definition
Centrally located space outside of and between the lungs.
Term
Pelvic cavity
Definition
Space below the abdomen containing portions of the intestines, rectum, urinary bladder, and reproductive organs. Composed of the hip bones surrounding.
Term
Peritoneum
Definition
Double folded membrane surrounding the abdominal cavity. Connects the abdominal viscera to muscles and functions as a protective membrane around the organs
Term
Pleura
Definition
Double-folded membrane surrounding each lung.
Term
Pleural Cavity
Definition
Space between the pleural layers. (between the lungs outside from the layers)
Term
Spinal Cavity
Definition
Space within the spinal column containing the spinal cord. (the little holes in the back)
Term
Thoracic Cavity
Definition
Space in the chest containing the heart, lungs, bronchial tubes, trachea, esophagus, and other organs. 
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