The document discusses the major body cavities and planes of the body. It describes: 1) The thoracic cavity which contains the lungs, heart, esophagus and more. It is surrounded by the pleura, a double-folded membrane. 2) The abdominal cavity which contains the stomach, intestines, spleen, pancreas, liver and more. It is surrounded by the peritoneum, a double-folded membrane. 3) The pelvic cavity which contains the intestines, bladder, urethra and more in females the uterus and vagina. It also outlines the divisions of the back including the cervical, thoracic, and lumbar regions.

1. PLANES OF THE BODY

2. Body Cavities
Brain, pituitary gland.
Lungs, heart, esophagus, trachea, bronchial
tubes, thymus gland, aorta (large artery).
—space between the membranes that
surround each lung. Each pleural cavity is lined with a
double-folded membrane called pleura. If the pleura
becomes inflamed (as in pleuritis or pleurisy), the pleural
cavity can fill with fluid
—centrally located area outside of and
between the lungs. It contains the heart, aorta, trachea,
esophagus, thymus gland, bronchial tubes, and many
lymph nodes.

3. Stomach, small and large
intestines, spleen, pancreas, liver, and
gallbladder.
is the double-folded
membrane surrounding the abdominal
cavity .
are two bean-shaped organs
situated behind (retroperitoneal area)

4. small and large intestines,
rectum, urinary bladder, urethra, and
ureters
(uterus and vagina in the female).
Nerves of the spinal cord.

8. Thoracic cavity

9. :
.

11. Contains the liver (right lobe), gallbladder, part of
the pancreas, parts of the small and large intestines.
Contains the liver (left lobe), stomach, spleen, part ofthe pancreas,
parts of the small and large intestines.
Contains parts of the small and large intestines, right
ovary, right fallopian tube, appendix, right ureter.

contains parts of the small and large intestines, left ovary, left
fallopian tube, left ureter.

13. DIVISIONS OF THE BACK
(SPINAL COLUMN)
Neck region. There are 7 cervical vertebrae
(C1-C7).
Chest region. There are 12 thoracic vertebrae
(T1-T12).
Loin (waist) or flank region. There are 5 lumbar vertebrae
(L1-L5).
Five bones (S1-S5) are fused to form one bone
(tailbone) is a small bone composed of 4 fused pieces.

15. PLANES OF THE BODY

17. OTHER DIRECTIONAL TERMS