Ch 1- Body Cavities Flashcards
What are the 2 main body cavities?
Dorsal body cavity
Ventral body cavity
What 2 cavities does the dorsal cavity consist of?
Cranial cavity
Vertebral cavity
What is the cranial cavity?
Formed by cranial bones
Contains the brain
What is the vertebral cavity?
Formed by vertebral column
Contains the spinal cord
What 2 cavities does the ventral body cavity consist of?
Thoracic cavity
Abdominopelvic cavity
They are separated by the muscular diaphragm
What is the thoracic cavity?
Formed by:
- ribs
- muscles of the chest
- sternum
- thoracic portion of vertebral column
Within cavity:
- pericardial cavity
- pleural cavities (2)
- mediastinum
What does the mediastinum contain?
Heart surrounded by pericardial cavity
Blood vessels
Thymus gland
Part of trachea and esophagus
Nerves
Lymph nodes
What are the pleural cavities?
Space between visceral and parietal pleura
Contains serious fluid
Around each lung
What is the pericardial cavity?
Space between the parietal and visceral layers of the serous pericardium
Contains serious fluid (pericardial fluid)
What is the abdominopelvic cavity?
Extends from the diaphragm to the pelvis
Subdivided into the abdominal cavity and pelvic cavity
Contains the peritoneal cavity
What is the abdominal cavity?
Contains:
- stomach
- liver
- gallbladder
- spleen
- small intestine
- most of the large intestine
What is the pelvic cavity?
Urinary bladder
Internal organs of the reproductive system
Portions of the large intestine
What is the peritoneal cavity?
Space between the visceral peritoneum and parietal peritoneum
Contains serous fluid
What is the oral cavity?
Contains teeth and mouth
Continuous of with the digestive tube
What is the nasal cavity?
Located within and posterior of the nose
Part of respiratory system
