What’s in Class This Week?

In continuation of the new series called What’s in Class This Week, I will provide quick summary of what I’m currently teaching at AFNA! If you see something that interests you, contact Roger for an invitation to join our class, or schedule a campus tour today! If you’ve already graduated from AFNA, you are always welcomed to audit one of your favorite classes!

Anatomy of the Heart

This week we’ve covered the cardiovascular system from head to toe! After gaining insight to the value of a healthily functioning heart, students this week got to take a look through the intricate anatomy of the heart. For starters, your heart isn’t just a giant blob of bloody flesh. In fact, the heart has multiple little groups of muscles each working together to make sure blood travels in and out in a timely and orderly fashion.

As deoxygenated blood enters the right atrium, it gets funneled through the tricuspid valve into the right ventricle where it will be sent off to the lungs. When the right ventricle contracts, the deoxygenated blood travels through the pulmonary arteries into the lungs, where CO2 and O2 will be exchanged, bringing oxygen to the blood. The newly oxtgenated blood then travels back to the heart via the pulmonary veins and pours into the left atrium. Blood in the left atrium then flows through the bicuspid (mitral) valve into the left ventricle before being pumped out to the body for use.

All of this happens within seconds during each beat of the heart. In fact, your heart contracts almost 70 times per minute, pumping thousands of liters of blood to your body each minute. More specifically, a stronger and healthier heart can pump more blood if the left ventricle is able to contract with more force. This will increase the stroke volume, or amount of blood that is pumped per beat.

Next Week

Our next lesson explores exercise physiology where we get even more detailed with the cardiovascular system. In this lesson, we examine the changes in the body during exercise and activity to see how energy is produced and used for movement. If this is fascinating to you, contact Roger at the Admissions Offices for a tour of AFNA and with the necessary steps to enroll in our curriculum!