Anatomic Reference: Major Body Cavities and Membranes

Lesson 2.3, CTE. Anatomic Reference: Major Body Cavities and Membranes

Two major body cavities

Dorsal and Ventral cavities

Spaces within the body that contain and protect internal organs.

Dorsal and Ventral cavities

Dorsal cavity location

Located along the back of the body and head

Inside the dorsal cavity

Contains organs of the nervous system

The dorsal cavity is divided..

Into two portions, spinal and cranial.

Located in the skull, surrounds and protects the brain

The cranial cavity

The cranial cavity is located

In the dorsal cavity

The spinal cavity is also located in the dorsal cavity, here is it located and what does it do?

The spinal cavity is located within the spinal column, surrounds and protects the spinal cord

Where is the ventral cavity located and what does it contain?

Located along the front of the body contains the organs of the cardiac

How is the ventral cavity divided? What are they?

Divided into three cavities, thoracic, abdominal, and pelvic.

Where is the thoracic cavity located and what does it do?

The thoracic cavity surrounds and protects the heart and lungs

What does the abdominal cavity contain?

The abdominal cavity contains primarily the major organs of digestion

Where is the pelvic cavity located and what does it contain?

The pelvic cavity is the space formed by the hip bones and contains primarily the organs of the reproductive and excretory systems

Is there a division between the abdominal and pelvic cavities? How are they referred to?

There is no physical division between the abdominal and pelvic cavities - sometimes referred to as the abdominopelvic cavity

Inguinal

means relating to the groin - refers to the entire lower area of the abdomen. The groin is the crease at the junction of the trunk with the upper end of the thigh

What is each cavity lined with?

Each cavity is lined by a membrane

What are the meninges, and where are the located?

In the posterior cavity, the meninges are the system of membranes which enclose the brain and spinal cord

How many layers are there that can line a cavity? What are they starting from the outside in?

There are three layers: from the outside they are the dura mater, arachnoid mater and pia mater.

How many layers in the ventral cavity?

In the ventral cavity there are two layers.

What membrane is up against the outside of the cavity?

The membrane which is up against the outside of the cavity is the parietal membrane

What membrane is adherent to the organs?

The membrane which is adherent to the organs (viscera) is the visceral membrane

What lines the abdominopelvic cavity?

The lining of the abdominopelvic cavity is the peritoneum

How many linings in the thoracic cavity?

There are two linings in the thoracic cavity

What membrane surrounds each lung?

The pleura surrounds each lung

What membrane surrounds the heart?

The heart is surrounded by the pericardium

Label

A. Cranial Cavity

B. Thoracic Cavity

C. Ventral Cavity

D. Abdominal Cavity

E. Abdominalpelvic Cavity

F. Dorsal Cavity

G. Spinal Cavity

H. Pelvic Cavity