The Cardiovascular System: Heart (Anatomy of the heart (size, location…
The Cardiovascular System: Heart
Anatomy of the heart
why does the heart have valves?
the heart has four chambers and pumps blood thrugh the pulmonary and systemic circuits.
the right side of the heart is the pulmonary circuit pump. it pumps blood through the lungs, where the blood picks up oxygen and dumps carbon dioxide.
the left side of the heart is the systemic circuit pump. it pumps blood through the body's tissues, supplying them with oxygen and nutrients and removing carbon dioxide.
the heart is enclosed within a double sac made up of the outer fibrous percardium and the inner serous percardium (pariertal and visceral layers). the pericardial cavity between the serious layers contains lubricating serious fluid.
what path does blood take through the heart
how do we replace blood in an emergency?
size, location and oreientation of the heart
mass of 250-350 grams
enclosed within the mediastinum
extends obliquely for 12-1 cm from the second rib to the fifth rib
enclosed in a double-walled sac, the pericardium
the fibrous percardium: protects the heart, anchors it to surrounding structures, and prevents overfilling of the heart with blood
the human heart, about the size of a clenched fist, is located obliquely within the mediastinum of the thorax.
Conduction System & EKG