Neuromuscular junction: structure and diagram
The Location, Size, and Shape of the Heart
The heart is approximately the size of a an adult’s fist and it weights 230-350 grams. It is shaped like an inverted cone. About two thirds of the heart’s mass is located to the left of the body’s midline.
Learn the anatomy of the heart from scratch with these interactive quizzes and free fill-in-the-blank exercises.
The narrow end of the heart, which is called the apex, is directed downward and to the left.
Location and Orientation of Heart Quiz
Heart Quiz Anatomy – Anterior View
Heart Quiz Anatomy – Posterior View
- Open Anatomy. (n.d.). TA2 Viewer. Retrieved April 5, 2023, from
- Moore, K. L. (2018). Clinically Oriented Anatomy (8th ed.). Philadelphia, PA: Wolters Kluwer.
- Drake, R. L., Vogl, A. W., & Mitchell, A. W. M. (2015). Gray’s Anatomy for Students (3rd ed.). Edinburgh, Scotland: Churchill Livingstone.
- Standring, S. (2021). Gray’s Anatomy (42tst ed.). Edinburgh: Elsevier Churchill Livingstone.