Definition

Noun: - The anatomical space enclosed by the bones of the pelvis (the hip bones, sacrum, and coccyx). This cavity is a subdivision of the abdominopelvic cavity and contains various internal reproductive, digestive, and urinary organs.

Usage

The term "pelvic cavity" is used specifically in anatomical, medical, and biological contexts to describe a precise body compartment. - It functions as the inferior (lower) portion of the abdominopelvic cavity. - It is continuous with the abdominal cavity above. - It houses organs such as the urinary bladder, internal reproductive organs (e.g., uterus, ovaries, prostate), and parts of the large intestine (e.g., rectum).

Examples

• In an anatomy textbook: "The pelvic cavity is protected by the robust pelvic girdle."
• In a medical diagnosis: "The ultrasound revealed a mass within the pelvic cavity."
• Describing function: "During childbirth, the fetus passes through the birth canal within the pelvic cavity."

Advanced Usage

• Comparative Anatomy: The size and shape of the pelvic cavity differ significantly between biological sexes, which is related to childbirth.
• Clinical Context: Conditions like pelvic inflammatory disease (PID) or pelvic floor dysfunction involve structures within or supporting the pelvic cavity.
• Surgical Reference: A pelvic exenteration is a major surgical procedure that involves removing organs from the pelvic cavity.

Variants and Related Words

• Pelvis (noun): The bony structure that forms the framework and boundary of the pelvic cavity.
• Pelvic (adjective): Of or relating to the pelvis or pelvic cavity (e.g., pelvic pain, pelvic exam).
• Abdominopelvic cavity (noun): The combined cavity consisting of both the abdominal and pelvic cavities.

Synonyms

• Pelvis (when used informally to refer to the general area, though this is less precise as "pelvis" strictly means the bones).
• Lesser pelvis (or true pelvis), which is the anatomical term for the space inferior to the pelvic brim, essentially equivalent to the pelvic cavity.

Related Phrases

• Pelvic floor: The group of muscles and tissues that form the inferior boundary (base) of the pelvic cavity, supporting the organs within it.
• Pelvic brim (or inlet): The anatomical boundary separating the abdominal cavity from the pelvic cavity proper.

Noun

1. the space bounded by the bones of the pelvis and containing the pelvic viscera