❤ Cardiova

Notes

❤ Cardiovascular System: The Heart This video focuses on the cardiovascular system, specifically the heart (Chapter 18). This part covers heart anatomy and an overview of circulation, with other topics like heart physiology, regulation, and clinical applications reserved for future discussions. 🎯 Overarching Goals for Chapter 18 The main objectives for this chapter are to understand: ● ● Heart Anatomy: Both at the gross anatomy level (what's visible to the naked eye) and the cellular level (histology). Heart Physiology: An overview of electrical and mechanical events. Detailed regulation of the heartbeat and clinical applications will be covered later. 🗺 Where is the Heart Anyway? The heart is located in the chest, behind the sternum (breastbone). It isn't perfectly symmetrical and sits angled towards the left and slightly forwards in the body. This specific positioning allows for the strongest heartbeat to be felt on the left side of the chest, around the ribs, known as the apical impulse. The heart is nestled between the lungs and sits on top of the diaphragm. All these organs are constantly moving. To prevent friction, which generates heat and pain, the heart is surrounded by ...