: BODY PLANES, CAVITIES, AND REGIONS

Left lower quadrant(LLQ)

Contains about half of the small intestines and colon, the left ovary and fallopian tube, and the left ureter.

Right lower quadrant (RLQ)

Contains about half of the small intestines and colon, the right ovary and fallopian tube, the appendix, and the right ureter.

Right upper quadrant (RUQ)

Contains the majority of the liver, the gallbladder, a portion of the pancreas, the right kidney, and a portion of the small intestines and colon.

Transverse Plane

Running across the body and parallel to the ground, the transverse plane creates upper and lower sections of the body, dividing the body into superior and inferior parts. This is also called a cross section. Cutting along the transverse or horizontal plane provides a transverse section view.

The abdominopelvic cavity

The cavity is further divided into the abdominal cavity and pelvic cavity, but there is no physical barrier between the two.

The midsagittal plane

cuts through the exact center of the body (or organ). If the division is uneven, the body or organ has been divided with a parasagittal plane.

In the thoracic cavity there is a two layer membrane

the two-layer membrane is called the pleura. The outer layer of the membrane is called the parietal pleura while the inner layer is the visceral pleura.

the dorsal and the ventral cavity

An empty space in the body is called a cavity. Within the body are two major cavities:

Left upper quadrant (LUQ)

Contains a portion of the liver, the spleen, the stomach, the majority of the pancreas, the left kidney, and a portion of the small intestines and colon.

Frontal Plane

Dividing the body vertically, the frontal plane creates the anterior (front) and posterior (back) portions of the body. It is also called the coronal plane. Cutting along the frontal plane provides a frontal section view.

Sagittal Plane

The lateral plane, or sagittal plane, divides the body into left and right sides.

The pelvic cavity

holds the urinary bladder, ureters, urethra, the lower part of the large intestine, and part of the small intestine. It also houses the female reproductive organs and some of the male reproductive organs. Surrounded by the abdominal cavity, sacrum, and pelvis, this cavity is inferior to the abdominal cavity.

the abdominal cavity

the stomach, spleen, liver, gallbladder, pancreas, and most of the small intestine and colon. This cavity is bound by the diaphragm, the body wall, and the pelvic cavity; it is superior to the pelvic cavity.

serous membrane

ventral cavity is lined by a membrane whose role in that cavity is to help reduce friction with the organs when they rub against each other or when organs rub against the walls of the cavities themselves.

the dorsal cavity

is subdivided into the cranial and spinal cavities. The cranial cavity is formed by the skull; it contains and protects the brain. The spinal cavity, also known as the vertebral canal, protects the spinal cord in a bony cavity created by the vertebrae of the backbone.

Part of the ventral cavity is the thoracic cavity, which is made up of the following areas

The two pleural cavities each contain a lung. The pericardial cavity contains the heart and is medial to the pleural cavities. The mediastinum cavity contains the esophagus, trachea, thymus gland, aorta, and inferior vena cava.

the ventral cavity

The ventral body cavity is a human body cavity that is in the anterior (front) aspect of the human body. It is made up of the thoracic cavity, and the abdominopelvic cavity.