Questions and Answers
What is a sagittal section?
What is a midsagittal (median) section?
Cut made down the median plane of the body where right and left parts are equal.
What does a frontal (coronal) section do?
What is a transverse (cross) section?
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What does the dorsal body cavity consist of?
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What is the cranial cavity?
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What is the spinal cavity?
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What is the ventral body cavity?
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What is the thoracic cavity?
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What is the abdominopelvic cavity?
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What is the abdominal cavity?
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What does the pelvic cavity house?
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Study Notes
Body Planes and Sections
- Sagittal Section: A longitudinal cut dividing the body into right and left parts.
- Midsagittal (Median) Section: A cut along the median plane resulting in equal right and left halves.
- Frontal (Coronal) Section: A lengthwise cut that divides the body into anterior (front) and posterior (back) parts.
- Transverse (Cross) Section: A horizontal cut dividing the body or organ into superior (upper) and inferior (lower) parts.
Body Cavities
- Dorsal Body Cavity: Contains the cranial cavity and the spinal cavity, protecting the brain and spinal cord respectively.
- Cranial Cavity: The space within the skull that houses the brain.
- Spinal Cavity: Extends from the cranial cavity down the vertebral column, enclosing and protecting the spinal cord with vertebrae.
Ventral Body Cavity
- Ventral Body Cavity: Larger than the dorsal cavity, containing structures in the thorax and abdomen.
- Thoracic Cavity: The superior section of the ventral cavity, separated by the diaphragm; includes the mediastinum, which divides the lungs and houses the heart and trachea.
- Abdominopelvic Cavity: Located inferior to the diaphragm, further divided into abdominal and pelvic cavities.
Abdominal and Pelvic Cavities
- Abdominal Cavity: Houses vital organs such as the stomach, liver, and intestines.
- Pelvic Cavity: Located below the abdominal cavity, containing reproductive organs, bladder, and rectum.
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