Feb 21, 2026 · Diaphragm, dome-shaped, muscular and membranous structure that separates the thoracic and abdominal cavities in mammals; it is the principal muscle of respiration.

The diaphragm plays a critical role in the respiratory system. When you breathe in, your diaphragm contracts (tightens) and flattens, moving down towards your abdomen.

Dec 7, 2025 · The diaphragm is a dome-shaped muscle separating the chest from the abdomen. It is the main muscle used for breathing and is involved in other functions.

While the diaphragm is one muscle, it is composed of two distinct muscle regions: the costal, which serves as the driver in the work of breathing, and crural diaphragm, which serves as an "anchor;" …

Sep 19, 2023 · The diaphragm is much more than just a sheath separating your thoracic and abdominal cavities. This article will examine this intricate and crucial muscle in detail, looking at its anatomy, …

Jun 28, 2024 · The diaphragm is a large, flat, double-domed sheet of muscle located in the thoracic region of the torso or body trunk. It separates the thoracic and abdominal cavities and serves as the …

The diaphragm is a musculotendinous structure that separates the thoracic cavity from the abdominal cavity, playing a crucial role as the primary muscle involved in respiration. It has a dome-like shape …

Jul 30, 2018 · The diaphragm is a thin skeletal muscle that sits at the base of the chest and separates the abdomen from the chest. It contracts and flattens when you inhale.

The diaphragm is a thin, flat muscle shaped like a parachute or an upside-down bowl. It stretches across the entire bottom of your ribcage, creating a physical wall between your chest cavity and your …

Nov 6, 2025 · The diaphragm is a double-domed sheet of skeletal muscle, located at the inferior-most aspect of the rib cage. It separates the thoracic cavity from the abdominal cavity.