Four Primary Body Cavities

Question 1

Cranial Cavity

Answer 1

space formed by bones of skull

Question 2

Spinal cavity

Answer 2

space created internally through the length of the vertebral column

Question 3

Thoracic cavity

Answer 3

• space inside ribcage, superior to the diaphragm
• partitioned by two serous membranes:
  1) . Pleural sacs(x2): house the lungs
  2) . Pericardial sac: houses the heart

Question 4

Abdominopelvic cavity

Answer 4

1). Abdominal cavity:
A). Space inferior from diaphragm, superior from urinary bladder.
B). Defined by a single serous membrane
C). Peritoneal sac: houses the upper digestive organs.

2). Pelvic Cavity:
A). Space inferior to peritoneum, within the bony pelvis.
B). Houses lower intestine, bladder, and reproductive organs.