Heart diagram; why can't it be this simple in nursing books?

This link is from The Children's Heart Institute. Coloring Book - How blood flows through the heart

Human Heart Diagram, and the top ten fun facts about the heart!

Facts About the Human Heart

The Cardiovascular System: Anatomy and Physiology from an herbalists perspective. This my absolute favorite diagram I used during nursing school at Jesuit!

Internal anatomy diagram of the human heart by Texas Heart Institute.

Pictures of the human heart showing chambers, valves, conduction system and circulatory system.

Anatomical heart diagram by TessaPerlowInc on Etsy https://www.etsy.com/listing/544414961/anatomical-heart-diagram

Tessa Perlow - Anatomical human heart - Hand stretched and embroidered linen One of a kind artwork

The Cardiovascular System: The Heart *good diagrams and overview

Chambers and Associated Great Vessels The right and left atria are the receiving chambers of the heart. The right ventricle pumps blood into the pulmonary trunk; the left ventricle pumps blood into the aorta.

Circulatory system

STEM Club: The Circulatory System

Diagram of the human heart (cropped) - Circulatory system - Wikipedia, the free encyclopedia

Beaded Rounded Heart (Diagrams) Pattern by Laura. This site offers the complete instructions to make this lovely heart.

beaded heart pattern---Love this but will probably never make it!