Anatomy Chapter 1: Dorsal Body Cavity

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Questions and Answers

What encloses the spinal cord?

  • Abdominal cavity
  • Thoracic cavity
  • Cranial cavity
  • Vertebral cavity (correct)

What is located along the dorsal surface of the human body?

Dorsal body cavity

What does the cranial cavity encase?

Brain

What is surrounded by the ribs and muscles of the chest?

<p>Thoracic cavity</p> Signup and view all the answers

What does the abdominal cavity contain?

<p>Digestive viscera</p> Signup and view all the answers

What separates the abdominal cavity from the thoracic cavity?

<p>Diaphragm</p> Signup and view all the answers

What does the pelvic cavity contain?

<p>Urinary bladder, reproductive organs, and rectum</p> Signup and view all the answers

What are the two parts of the abdominopelvic cavity?

<p>Abdominal cavity and pelvic cavity</p> Signup and view all the answers

What is the function of the pleural cavities?

<p>Envelops a lung and decreases friction</p> Signup and view all the answers

What does the mediastinum contain?

<p>Heart, great vessels, thymus, and parts of the trachea, bronchi and esophagus</p> Signup and view all the answers

The ventral body cavity is located at the posterior aspect of the human body.

<p>False (B)</p> Signup and view all the answers

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Study Notes

Dorsal Body Cavity

  • Located along the posterior surface of the human body.
  • Subdivided into cranial and spinal cavities; they are continuous with one another.

Cranial Cavity

  • Encloses and protects the brain.

Vertebral Cavity

  • Encloses and protects the spinal cord.

Thoracic Cavity

  • Surrounded by ribs and chest muscles.
  • Houses the heart and lungs.

Diaphragm

  • A muscular structure that separates the thoracic cavity from the abdominopelvic cavity.

Abdominal Cavity

  • Contains digestive organs (digestive viscera), including stomach and intestines.

Pelvic Cavity

  • Contains the urinary bladder, reproductive organs, and rectum.

Abdominopelvic Cavity

  • A combined cavity separated by the diaphragm.
  • Superior part: abdominal cavity with digestive organs.
  • Inferior part: bony pelvis housing the urinary bladder and reproductive organs.

Ventral Body Cavity

  • The larger and anterior of the closed body cavities.
  • Comprises the thoracic cavity and also the abdominopelvic cavity.

Viscera

  • Refers to the internal organs housed within body cavities.

Pleural Cavities

  • Envelop each lung and contain pleural fluid, which reduces friction during breathing movements.

Mediastinum

  • The central cavity of the thorax, containing the heart, great vessels, thymus, and parts of the trachea and bronchi.
  • Houses the pericardial cavity, which contains the heart.

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