Chapter 1.5e Body Cavities and Membranes

What are the two subdivided cavities in the abdominopelvic cavity?

Abdominal cavity Pelvic cavity

The cranial cavity houses the _______.

Brain

What organs does the dorsal cavity contain?

Brain and Spinal cord

How is the cranial cavity enclosed/formed?

By the bones of the cranium.

What main organs does the thoracic cavity contain...

Lungs, the heart, part of the esophagus, the trachea, the thymus gland and the thoracic duct.

What organs does the abdominal cavity contain?

Most of digestive system, kidneys, most of ureters.

What is the two-layered serous membrane enclosing the lungs called?

Pleura

Define pleural cavity

Serous cavity between the parietal and visceral layers of the pleura, which has serous fluid.

Define peritoneal cavity

Serous cavity between the visceral and parietal peritoneum membrane layers, that contains serous fluid.

Pericardium has two layers, what are they?

The Parietal pericardium The Visceral pericardium

The Ventral cavity is parted into two cavities, what are they?

The Thoracic cavity The Abdonimopelvic cavity

What partitions the ventral cavity into two other cavities?

The Thoracic diaphragm

The __________ cavity is the larger, anteriorly placed cavity in the body.

ventral

Define visceral pleura

Covers the external surface of each lung.

How is the ventral cavity different from the posterior aspect?

The ventral cavity and its subdivisions do not completely encase their organs in bone.

How is the posterior aspect different from the ventral cavity?

The posterior aspect of the body contains cavities that are completely encased in bone and are physically and developmentally different from the ventral cavity.

Why is the presence of serous fluid important.

Because organs like heart, lungs, and or intestines are constantly moving and rubbing on eachother, but the serous fluid is there to reduce friction.

Define Visceral pericardium

Forms the hearts external surface.

Define mediastinum

Space between lungs that contains heart, blood vessels, thymus, trachea and the esophagus.

What main organs does the abdominopelvic cavity contain?

Stomach, liver, pancreas, spleen, gallbladder, kidneys, and most of the small and large intestines. It also contains the urinary bladder and internal reproductive organs.

Which body cavity is associated with the lungs and what are the names of the serous membranes?

The thoracic cavity The Pleura membrane which has the Parietal and Visceral pleura with the Pleural cavity in between carrying serous fluid.

What is another significant difference between the ventral cavity and the posterior aspect of the body having to do with membranes?

The ventral cavity is lined with thin serous membrane and the posterior aspect have no serous membrane.

Define parietal peritoneum

the outer layer of the serous membrane, which lines the internal walls of the abdonimopelvic cavity.

Define pericardial cavity

the serous cavity between the visceral and parietal layers of the pericardium which contains serous fluid.

The vertebral canal is enclosed/formed by the bones of the ___________?

vertebral column

Define visceral peritoneum

The inner layer of the serous membrane, and covers most external surfaces of the abdominal and pelvic organs.

Define parietal pleura

The outer layer of the serous membrane which lines the internal surface of the thoracic wall.

Define parietal pericardium

The outermost layer of the serous membrane that forms the sac around the heart.

Define parietal layer

The parietal layer lines the internal surface of the body wall.

What and where is the serous cavity located?

The serous cavity is the potential space between the visceral and parietal serous membrane layers.

Whats the main function of the serous fluid?

The serous fluid has the consistency of oil so it serves as a lubricant.

The vertebral canal houses ________.

The spinal cord

What two-layered serous membrane lines the abdominopelvic cavity?

Peritoneum

The _______ cavity is superior to the pelvic brim, and the _______ cavity is inferior to the pelvic brim.

Abdominal cavity Pelvic Cavity

Define visceral layer

Covers the external surface of the organs (viscera) within the organs.

What are the two enclosed cavities found in the posterior aspect?

Cranial cavity Vertebral canal

What organs does the pelvic cavity contain?

Distal part of large intestine, remainder of ureters, Urinary bladder, rand the internal reproductive organs.

The posterior aspect of the body is also known as...

Dorsal Body Cavity

What is another name for cranial cavity?

Endocranium

The heart is enclosed by a serous two-layered membrane called...

Pericardium

What do serous membranes secrete within the serous cavity?

Serous fluid

What are the two layers that serous membrane form?

Parietal layer Visceral layer