Body Cavities

Question 1

Dorsal Cavity

Answer 1

Consists of the Cranial cavity and Vertebral cavity. The dorsal cavity is protected by 3 protective membranes: Dura Mater, arachnoid, and pia mater.

Question 2

Ventral Cavity

Answer 2

The ventral body cavity is the larger of the two cavities and is subdivided into two smaller cavities: the thoracic cavity and the abdominopelvic cavity. These two cavities are separated by the diaphragm, a thick, transverse muscle of respiration.
Ventral cavity has 3 serous membranes that are filled with water and mucous fluid that lubes organs: Pleura, Pericardium, and Peritoneum.

Question 3

Thoracic Cavity

Answer 3

The thoracic cavity sits in your chest and sits superior to the diaphragm. Within the thoracic cavity there are three smaller cavities: two pleural cavities contain the lung and lie on the right and left side of the thorax, and the pericardial cavity which is situated between the pleural cavities and contains the heart.

Question 4

Abdominopelvic Cavity

Answer 4

The abdominopelvic cavity is located inferior to the diaphragm is further subdivided into the abdominal cavity superiorly which contains the liver, spleen, stomach, kidneys, and much of the intestines, and the pelvic cavity inferiorly which contains the urinary bladder, rectum, and reproductive organs.

Question 5

Dura Mater

Answer 5

The tough outermost membrane enveloping the brain and spinal cord.

Question 6

Arachnoid Membrane

Answer 6

A thin layer that lays between the duramater and piamater. The arachnoid membranes are projections of connective tissue in the subarachnoid space that connect the arachnoid mater to the pia mater.

Question 7

Pia mater Membrane

Answer 7

The innermost layer, it is a thin layer that’s held tightly — like shrink wrap — to the surface of your brain and spinal cord. The pia mater is the only layer that clings tightly to the brain and follows all of its convolutions.

Question 8

Pleura Membrane

Answer 8

The pleura is a thin, serous membrane that lines the chest cavity and surrounds each lung.

Question 9

Pericardium Membrane

Answer 9

The pericardium is a fibrous sac that surrounds the heart and major blood vessels.

Question 10

Peritoneum Membrane

Answer 10

The peritoneum is a smooth, transparent membrane that lines the abdominal cavity and contains the organs of the abdomen and pelvis.