Chest
Septal papillary muscle of right ventricle
SEP-tal pa-PIL-ah-ree MUS-ul
The septal papillary muscle is an internal heart muscle in the right ventricle attaching to mitral/tricuspid valves via chordae. Prevents valve prolapse during contraction, essential for cardiac output in endurance training. Hypertrophy in athletes from high volume.
Open in 3D ViewerCommon Pain & Injury
Not applicable-cardiac; chest pain from dysfunction signals emergency. See ER for exertional dyspnea.
Anatomy & Function
Origin
Ventricular septum (wall between ventricles)
Insertion
Chordae tendineae to tricuspid valve leaflets
Actions
- Tenses chordae during systole (prevents regurgitation)
Innervation
Sympathetic and parasympathetic cardiac nerves
Muscle Relationships
Antagonists
N/A
Synergists
Other papillary musclesMyocardium
Trigger Points
None; not skeletal.
Stretches
1N/A
Common Conditions
Papillary muscle ruptureTricuspid regurgitationMyocardial infarction
Anatomical Parts
Septal papillary muscle of right ventricle
FAQ
Papillary muscle function?
Anchors valves to prevent backflow.
Papillary muscle rupture?
Acute regurgitation; surgical emergency.
Related Chest Muscles
Abdominal part of left pectoralis major
The abdominal part of the left pectoralis major is the lower portion of the left chest's primary pushing muscle, attaching from the sternum down to the ribs near the abdomen. It drives shoulder adduction and flexion, crucial for powerful presses like bench variations and dips. Fitness enthusiasts target it for that defined lower chest line in bodybuilding.
Abdominal part of right pectoralis major
The abdominal part of the right pectoralis major forms the lower section of the right chest's main power muscle, spanning from the sternum to the abdominal ribs. It excels in adduction and flexion for presses and flyes, key for balanced chest development. Gym-goers love it for carving out that teardrop lower chest aesthetic.
Anterior papillary muscle of right ventricle
This cardiac muscle inside the right ventricle anchors mitral valve leaflets for proper heart pumping. Not skeletal, but endurance training optimizes heart efficiency. Matters for cardio performance indirectly.
Anterolateral head of lateral papillary muscle of left ventricle
Specialized head of left heart papillary muscle securing mitral valve for left ventricle ejection. Critical for oxygenated blood flow. Athletes benefit from cardiac hypertrophy here.
External intercostal muscle
External intercostals are thin muscles between the ribs that elevate them during inhalation, aiding deep breathing for core stability in lifts. They're vital for endurance athletes needing efficient oxygen uptake. Fitness training enhances respiratory muscle power.
Innermost intercostal muscle
Innermost intercostals are deep rib muscles aiding forced expiration like coughing. Support breathing in high-intensity training.
Internal intercostal muscle
Internal intercostals between ribs assist expiration and stabilize chest in lifts.
Lateral papillary muscle of left ventricle
Papillary muscle in heart's left ventricle anchors mitral valve to prevent backflow. Endurance training strengthens indirectly.
Chest Pain Guide
Common causes and relief
Activities & Sports
See which activities use Septal papillary muscle of right ventricle