3D CONTENT
3D HEART ANATOMY

RIGHT VENTRICLE

Author: Dr. Bogdan Leahu
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Right ventricle anatomy 360-degree interactive viewer showing cardiac chamber with inlet, outlet, and trabecular components
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Right Ventricle - Overview, Preview from the app.

TABLE OF CONTENTS

RIGHT VENTRICLE

  • One of four cardiac chambers
  • Located anteriorly
  • Forms majority of heart's anterior surface
  • Receives deoxygenated blood from right atrium
  • Pumps blood into pulmonary circulation via pulmonary artery
  • Triangular shape

Three Main Components

  • Inlet
  • Trabecular part
  • Outlet
  • Components ensure efficient blood flow to lungs for oxygenation

INLET OF RIGHT VENTRICLE

Inlet of right ventricle showing tricuspid valve apparatus with leaflets, chordae tendineae, and papillary muscles
Inlet of Right Ventricle - Sourced from the app 3D HEART ANATOMY
  • Contains tricuspid valve apparatus
  • Ensures unidirectional blood flow from right atrium
  • Prevents backflow during ventricular contraction

Tricuspid Valve Apparatus Components

  • Tricuspid valve leaflets
  • Chordae tendineae
  • Papillary muscles

Supraventricular Crest

  • Muscular ridge between pulmonary and tricuspid valves
  • Separates inflow and outflow tracts
  • Directs blood flow efficiently through heart

OUTLET OF RIGHT VENTRICLE

Outlet of right ventricle showing conus arteriosus (infundibulum) and pulmonary valve
Outlet of Right Ventricle - Sourced from the app 3D HEART ANATOMY

Conus Arteriosus

  • Also known as infundibulum
  • Conical pouch in upper right ventricle
  • Outflow component of right ventricle
  • Provides support for pulmonary valve
  • Ensures smooth blood flow into pulmonary artery

TRABECULAR PART OF RIGHT VENTRICLE

Trabecular part of right ventricle 360-degree interactive viewer showing trabeculae carneae muscular ridges
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Trabecular Part of Right Ventricle, Preview from the app.

  • Characterised by network of muscular ridges
  • Thinner than other components
  • Extends down to cardiac apex

Trabeculae Carneae

  • Muscular ridges on ventricular wall
  • Coarse trabeculations
  • Increase surface area of ventricular wall
  • Enhance contractile ability
  • Contribute to efficient blood flow

SEPTOMARGINAL TRABECULA

Septomarginal trabecula 360-degree interactive viewer showing moderator band with parietal and anterior limbs
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Septomarginal Trabecula (Moderator Band), Preview from the app.

  • Also known as moderator band
  • Significant muscular band
  • Extends from interventricular septum to anterior papillary muscle
  • Contains part of right bundle branch
  • Facilitates coordinated ventricular contraction

Divisions

  • Parietal limb
  • Anterior limb

Parietal Limb

  • Also called posteroinferior limb
  • Proceeds posteriorly
  • Supports muscular septum
  • Medial papillary muscle typically originates here
  • Contributes to tricuspid valve stability and function

Anterior Limb

  • Runs to pulmonary valve leaflet attachment
  • Integral to right ventricular structure
  • Ensures proper outflow tract alignment and function

APICAL TRABECULATIONS

Coarse apical trabeculations of right ventricle showing robust muscle bundles at ventricular apex
Coarse Apical Trabeculations - Sourced from the app 3D HEART ANATOMY

Coarse Apical Trabeculations

  • Robust muscle bundles at right ventricular apex
  • Contrast with finer trabeculations of left ventricle
  • Vital for mechanical efficiency during contraction

PAPILLARY MUSCLES OF RIGHT VENTRICLE

Papillary muscles of right ventricle 360-degree interactive viewer showing anterior, inferior, and septal papillary muscles
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Papillary Muscles of Right Ventricle, Preview from the app.

  • Conical muscular projections extending into ventricular lumen
  • Connect to tricuspid valve leaflets via chordae tendineae
  • Prevent valve prolapse during ventricular contraction
  • Anchor valve leaflets in position

Three Primary Papillary Muscles

  • Anterior papillary muscle
  • Inferior papillary muscle
  • Septal papillary muscle

Anterior Papillary Muscle

  • Largest and most significant
  • Originates from anterior wall of right ventricle
  • Supported by septomarginal trabecula
  • Connects to anterior and posterior tricuspid cusps

Inferior Papillary Muscle

  • Also called posterior papillary muscle
  • Arises from inferior wall of right ventricle
  • Attaches to posterior and septal tricuspid cusps
  • Aids leaflet stabilisation during contraction

Septal Papillary Muscle

  • Smallest of the three
  • Variable in presence and size
  • Originates from interventricular septum
  • Connects to anterior and septal tricuspid cusps

CHORDAE TENDINEAE OF RIGHT VENTRICLE

Chordae tendineae of right ventricle showing fibrous cords connecting papillary muscles to tricuspid valve leaflets
Chordae Tendineae of Right Ventricle - Sourced from the app 3D HEART ANATOMY
  • Fibrous cords linking papillary muscles to valve leaflets
  • Prevent leaflet inversion into atrium during systole
  • Maintain efficient valve closure
  • Prevent regurgitation

Chordae Tendineae Spuriae

  • Also known as false chordae
  • Connect ventricular wall to ventricular wall or papillary muscles
  • Do not attach to valve leaflets

BIBLIOGRAPHY

1. Drake RL, Vogl AW, Mitchell AWM. Gray's Anatomy for Students. 4th ed. Philadelphia: Elsevier; 2020. Chapter 3: Thorax.

2. Standring S, editor. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed. Edinburgh: Elsevier; 2021. p. 996-1046.

3. Moore KL, Dalley AF, Agur AMR. Clinically Oriented Anatomy. 8th ed. Philadelphia: Wolters Kluwer; 2018. p. 127-162.

QUICK FACTS: RIGHT VENTRICLE

Key questions answered about this anatomy topic

Q: Which surface of the heart does the right ventricle predominantly form?

Answer: Anterior surface. The right ventricle is located anteriorly and forms the majority of the heart's anterior surface.

Q: What are the three main components of the right ventricle?

Answer: Inlet, trabecular part, and outlet. The right ventricle has three main components: the inlet (containing tricuspid valve apparatus), trabecular part (with muscular ridges), and outlet (conus arteriosus).

Q: Which structure separates the inflow and outflow tracts of the right ventricle?

Answer: Supraventricular crest. The supraventricular crest is a muscular ridge between the pulmonary and tricuspid valves that separates the inflow and outflow tracts.

Q: What is another name for the conus arteriosus?

Answer: Infundibulum. The conus arteriosus is also known as the infundibulum. It is a conical pouch in the upper right ventricle that forms the outflow component.

Q: What function does the conus arteriosus serve?

Answer: Provides support for the pulmonary valve. The conus arteriosus provides support for the pulmonary valve and ensures smooth blood flow into the pulmonary artery.

Want to test yourself? Try the interactive quiz above!

⋮⋮ Right Ventricle Quiz
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