Body Cavities Flashcards
What is a cavity?
A fluid-filled space inside the body that holds and protects internal organs.
What are the two main body cavities in the human body?
The ventral and dorsal cavity.
What does the cranial cavity house?
The cranial cavity is part of the dorsal body cavity and encases the brain.
What does the vertebral cavity house?
The vertebral cavity is part of the dorsal body cavity and houses the spinal cord.
The cranial and vertebral cavity protect which body system?
The nervous system.
True or false: The ventral and dorsal body cavities are further subdivided?
True
Where is the ventral cavity located?
Anterior or front of the trunk.
Which organs does the ventral cavity house?
The internal cavities (collectively called viscera) such as the lungs, heart, stomach, intestines, and reproductive organs.
What are the two subdivisions of the ventral body cavity that is separated by the diaphragm?
1) Thoracic cavity
2) Abdominopelvic cavity
What is pleura? (ploo-rah)
Two thin layers of tissue that protects and cushions your lungs.
The inner layer (visceral pleura) wraps around the lungs and is stuck so tightly to the lungs that it cannot be peeled off.
The outer layer (parietal pleura) lines the inside of the chest wall.
The very thin space between the layers is called the pleural space. A liquid, called pleural fluid, is in the pleural space. The fluid lubricates the pleural space so that the two layers of pleural tissue can slide against each other.
There are 2 pleural cavities within the thoracic cavity that surrounds each lung, what are they?
Mediastinum
(mee-dee-uh-STY-num) and pericardial cavity.
What organs does the thoracic cavity (chest cavity) contain?
The heart, lungs, oesophagus, trachea, and thymus.
The mediastinum contains which cavity?
Pericardial cavity.
What is in the mediastinum?
Mediastinum is a space in your chest that surrounds thoracic organs such as your heart, lungs, oesophagus, trachea, and thymus.
It also has blood vessels.
What are the three main components that make up the thoracic (chest) cavity?
1) Mediastinum
2) Left pleural cavity
3) Right pleural cavity
Where is the pericardial cavity?
Within the mediastinum.
The abdominopelvic (abdominal & pelvic) cavities are located in which body cavity?
- Ventral body cavity
- Dorsal body cavity
Ventral body cavity.
What organs are in the abdominal cavity?
Digestive organs like the stomach, intestines, spleen, and liver.
What organs are in the pelvic cavity?
Urinary bladder (part of urinary system), reproductive organs, and rectum (part of digestive system).
The word ‘parietal’ is derived from the Latin word “parietalis” meaning “belonging to the wall”.
Therefore, parietal serosa means?
Serosa that lines internal body cavity walls.
The word ‘viscera’ refers to soft internal organs of the body, including the lungs, the heart, and the organs of the digestive, excretory, reproductive, and circulatory systems.
Therefore, visceral serosa means?
Serosa that covers internal organs.
Describe what serous fluid looks like?
A clear to pale yellow, thin and watery liquid. The texture of serous drainage is slightly thicker than water.
In what situations might you see serous fluid coming out of the body?
During wound healing: Serous drainage is a sign that your immune system is working correctly to heal a wound. Serous drainage typically occurs in the first few days after surgery. It may be accompanied by redness, swelling, and warmth around the incision, which is a normal inflammatory response that helps aid with healing.
The pericardium is is a double-walled sac that surrounds and protects which organ?
The heart.
The pleurae are a pair of thin, serous membranes that envelops the ______ and line the _____ cavity. Its role is to cushion the ______ and reduce any friction that may develop between the ______, rib cage, and _____ cavity.
The pleurae are a pair of thin, serous membranes that envelop the lungs and line the chest cavity. Its role is to cushion the lung and reduce any friction that may develop between the lung, rib cage, and chest cavity.
This cavity is a sheet of smooth tissue that pads and insulates your organs, helps hold them in place and secretes a lubricating fluid to reduce friction when they rub against each other. It lines the cavity and surrounds your abdominal organs.
Abdominopelvic cavity.
True or false: There is a parietal and visceral layer in every cavity?
True
Abdominopelvic regions are divided into how many sections are what are they?
Quarters:
– Right upper quadrant (RUQ)
– Left upper quadrant (LUQ)
– Right lower quadrant (RLQ)
– Left lower quadrant (LLQ)
As well as quarters, the abdominopelvic section can be further divided into regions. This is primarily used by anatomists and resembles a tic-tac-toe grid.
How many regions can they be divided into and what are the regions called?
Nine:
1. Right hypochondriac region
2. Epigastric region
3. Left hypochondriac region
4. Right lumbar region
5. Umbilical region
6. Left lumber region
7. Right Iliac (inguinal) region
8. Hypogastric region
9. Left iliac (inguinal) region
