Podcast
Questions and Answers
Which organ is NOT found in the right upper quadrant (RUQ)?
Which organ is NOT found in the right upper quadrant (RUQ)?
- Transverse colon
- Spleen (correct)
- Gallbladder
- Pancreas
What is the superior boundary of the pelvic cavity?
What is the superior boundary of the pelvic cavity?
- Sacrum
- Pelvic floor muscles
- Abdominal cavity (correct)
- Pubic bones
Which of the following contains the appendix?
Which of the following contains the appendix?
- Left upper quadrant (LUQ)
- Right lower quadrant (RLQ) (correct)
- Left lower quadrant (LLQ)
- Right upper quadrant (RUQ)
Which abdominal region is directly superior to the umbilicus?
Which abdominal region is directly superior to the umbilicus?
In which quadrant would you find the left adrenal gland?
In which quadrant would you find the left adrenal gland?
What is contained within the cranial cavity?
What is contained within the cranial cavity?
Which bones form the boundaries of the cranial cavity posteriorly?
Which bones form the boundaries of the cranial cavity posteriorly?
What separates the thoracic cavity from the abdominal cavity?
What separates the thoracic cavity from the abdominal cavity?
Which of the following organs is NOT found in the abdominal cavity?
Which of the following organs is NOT found in the abdominal cavity?
Which of the following best describes the pelvic cavity?
Which of the following best describes the pelvic cavity?
Which major cavity houses the heart and lungs?
Which major cavity houses the heart and lungs?
What is the name of the cavity that surrounds the spinal cord?
What is the name of the cavity that surrounds the spinal cord?
Which structure primarily forms the anterior boundary of the abdominal cavity?
Which structure primarily forms the anterior boundary of the abdominal cavity?
Flashcards
Body cavities
Body cavities
Spaces within the body that protect and support internal organs.
Cranial cavity
Cranial cavity
The cavity containing the brain, formed by cranial bones.
Vertebral canal
Vertebral canal
Also known as the spinal canal, it contains the spinal cord.
Thoracic cavity
Thoracic cavity
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Abdominal cavity
Abdominal cavity
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Pelvic cavity
Pelvic cavity
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Pleural cavity
Pleural cavity
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Pericardial cavity
Pericardial cavity
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Pelvic cavity boundaries
Pelvic cavity boundaries
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Abdominal quadrants
Abdominal quadrants
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Right Upper Quadrant (RUQ)
Right Upper Quadrant (RUQ)
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Left Lower Quadrant (LLQ)
Left Lower Quadrant (LLQ)
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Nine abdominal regions
Nine abdominal regions
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Study Notes
Body Cavities
- Body cavities are spaces within the body that protect, segregate, and support internal organs
- Structures like bones, muscles, ligaments, and others create these cavities
- Major cavities include cranial, vertebral (spinal), thoracic, abdominal, and pelvic
- Other minor cavities exist, such as oral, nasal, and orbital cavities
Cranial Cavity
- Contains the brain
- Formed by cranial bones
- Boundaries:
- Anteriorly: frontal bone
- Posteriorly: occipital bone
- Superiorly: parietal bones
- Inferiorly: parts of frontal, temporal, and occipital bones, sphenoid, and ethmoid
- Laterally: temporal bones
Vertebral Canal
- Also known as the spinal canal
- Contains the spinal cord and spinal nerves
- Formed by the vertebral column
- Boundaries are not explicitly listed in the provided text
Thoracic Cavity
- Formed by ribs, intercostal muscles, sternum, and thoracic vertebrae
- Subdivided into:
- Pleural cavity: holds the lungs
- Pericardial cavity: contains the heart
- Mediastinum: houses thoracic organs (viscera), excluding the lungs, includes esophagus, trachea, thymus, and great vessels
- Ends inferiorly at the diaphragm
- Boundaries:
- Anteriorly: sternum and costal cartilages
- Posteriorly: thoracic vertebrae
- Superiorly: root of the neck
- Inferiorly: diaphragm
- Laterally: ribs and intercostal muscles
Abdominal Cavity
- Extends from the diaphragm to the pelvic cavity
- Largely formed from abdominal muscles and lumbar vertebrae
- Contains stomach, spleen, liver, gallbladder, small and large intestines
- Boundaries:
- Anteriorly: muscles of the anterior abdominal wall
- Posteriorly: lumbar vertebrae and posterior abdominal wall muscles
- Laterally: lower ribs and abdominal wall muscles
- Superiorly: diaphragm
- Inferiorly: continuous with the pelvic cavity
Pelvic Cavity
- Contains urinary bladder, parts of intestines, and internal genitals
- Boundaries:
- Anteriorly: pubic bones and pubic symphysis
- Posteriorly: sacrum and coccyx
- Laterally: hipbones
- Superiorly: continuous with the abdominal cavity
- Inferiorly: pelvic floor muscles
Abdominal Regions and Quadrants
- Abdominal regions/quadrants help locate organs and identify pain/tumor locations
- Nine regions are further divided into four quadrants
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