The Thoracic Cavity Contains The

1.4E: Torso Cavities

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Vertebrates have fluid-filled spaces chosen torso cavities that contain the organs.

Learning Objectives

Describe the major cavities of the human body

Key Points

The dorsal cavity contains the master organs of the nervous system, including the brain and spinal cord.
The diaphragm is a canvas of musculus that separates the thoracic cavity from the abdominal crenel.
Special membrane tissues surroundings the trunk cavities, such every bit the meninges of the dorsal cavity and the mesothelium of the ventral crenel.
The mesothelium consists of the pleura of the lungs, the pericardium of the heart, and the peritoneum of the abdominopelvic crenel.

Central Terms

abdominoplevic cavity: The ventral body chamber that contains the abdominal cavity (primarily digestive organisation) and the pelvic cavity (primarily reproductive organisation).
dorsal cavity: The cavity in the back of the trunk that contains the cranial and vertebral cavities, which house the encephalon and spinal cord respectively.
Thoracic Cavity: The ventral torso chamber that contains the pericardial cavity (the heart) and the pleural cavity (the lungs).

Past the broadest definition, a body cavity is whatsoever fluid-filled space in a multicellular organism. Yet, the term usually refers to the infinite where internal organs develop, located between the skin and the outer lining of the gut cavity."The human body cavity," commonly refers to the ventral body cavity because information technology is by far the largest 1 in volume. Blood vessels are not considered cavities but may be held within cavities. Most cavities provide room for the organs to accommodate to changes in the organism's position. They usually contains protective membranes and sometimes bones that protect the organs.

Anatomical terminology for trunk cavities: Humans accept multiple body cavities, including the cranial crenel, the vertebral crenel, the thoracic cavity (containing the pericardial cavity and the pleural crenel), the abdominal cavity, and the pelvic cavity. In mammals, the diaphragm separates the thoracic crenel from the abdominal cavity.

Dorsal

The dorsal cavity is a continuous cavity located on the dorsal side of the body. Information technology houses the organs of the upper central nervous system, including the encephalon and the spinal string. The meninges is a multi-layered membrane within the dorsal crenel that envelops and protects the encephalon and spinal cord.

Cranial

The cranial cavity is the anterior portion of the dorsal cavity consisting of the space within the skull. This cavity contains the encephalon, the meninges of the brain, and cerebrospinal fluid.

Vertebral

The vertebral cavity is the posterior portion of the dorsal cavity and contains the structures within the vertebral column. These include the spinal cord, the meninges of the spinal cord, and the fluid-filled spaces between them. This is the most narrow of all torso cavities, sometimes described as threadlike.

Ventral

The ventral cavity, the interior infinite in the front of the torso, contains many different organ systems. The organs within the ventral cavity are also called viscera. The ventral cavity has anterior and posterior portions divided by the diaphragm, a sheet of skeletal muscle establish beneath the lungs.

Thoracic

The thoracic crenel is the anterior ventral body cavity plant within the rib cage in the torso. It houses the main organs of the cardiovascular and respiratory systems, such every bit the middle and lungs, but too includes organs from other systems, such as the esophagus and the thymus gland. The thoracic cavity is lined by two types of mesothelium, a type of membrane tissue that lines the ventral crenel: the pleura lining of the lungs, and the pericadium lining of the heart.

Abdominopelvic

The abdominoplevic cavity is the posterior ventral body crenel found beneath the thoracic cavity and diaphragm. It is more often than not divided into the abdominal and pelvic cavities. The abdominal cavity is non contained within bone and houses many organs of the digestive and renal systems, too as some organs of the endocrine system, such as the adrenal glands. The pelvic cavity is independent inside the pelvis and houses the bladder and reproductive system. The abdominopelvic crenel is lined by a type of mesothelium chosen the peritoneum.