Nov 3, 2023 · Transversus thoracis (triangularis sternae, sternocostalis) is a muscle found on the inner surface of the anterior chest wall. It belongs to the intrinsic muscles of the chest wall, along with the intercostals , subcostal , levatores costarum and serratus posterior muscles .

The transversus thoracis muscle (/ t r æ n z ˈ v ɜːr s ə s θ ə ˈ r eɪ s ɪ s /), also known as triangularis sterni, lies internal to the thoracic cage, anteriorly. It is usually a thin plane of muscular and tendinous fibers, however on athletic individuals it can be a thick 'slab of meat', situated upon the inner surface of the front ...

Nov 9, 2024 · There are five muscles that make up thoracic cage; the intercostals (external, internal and innermost), subcostales, and transversus thoracis. These muscles act to change the thoracic volume during breathing.

Jul 24, 2023 · The thoracic wall is made up of five muscles: the external intercostal muscles, internal intercostal muscles, innermost intercostal muscles, subcostalis, and transversus thoracis. These muscles are primarily responsible for changing the …

Discover the key features and functions of the transversus thoracis muscle, from origin to insertion and its role in rib depression.

Nov 9, 2024 · The transversus thoracis is a muscle of the thoracic wall. It is located on the internal surface of the thoracic wall and is continuous with the transversus abdominis inferiorly.

Nov 6, 2024 · The transversus thoracis muscle, also known as the transverse thoracic muscle or triangularis sternae, is a thin band-like intrinsic muscle found on the inner surface of the front of the thoracic wall.

May 12, 2021 · The transversus thoracis is a thin band of muscle and tendon arising from the lower posterior surface of the sternum, posterior edge of the xiphisternum and the costal cartilage of the lowest 3-4 ribs at their sternal end.

Jan 16, 2025 · The transversus thoracis muscle is a flat, triangular muscle that originates from the posterior surface of the transverse processes of the upper six thoracic vertebrae. It inserts into the anterior surface of the first four ribs, just below the costal cartilage. [3]

The Transversus thoracis (Triangularis sterni) is a thin plane of muscular and tendinous fibers, situated upon the inner surface of the front wall of the chest. It arises on either side from the lower third of the posterior surface of the body of the sternum, from the posterior surface of the xiphoid process, and from the sternal ends of the ...