PPT-Heart Valves General Blood flows through the heart in

one direction Purpose of valves Valves open amp close in response to different pressures in the chambers Atrioventricular Valves AV Located between the atria and their respective ventricles. The Heart and Circulatory System. Heartbeat animation. Stages of a heartbeat . Stage 1:. . A heartbeat begins . with the heart muscle . relaxed. and . valves . closed. .. Blood flows into the two atria and both sides fill up with blood.. SEMESTER TWO. COURSE:ANATOMY AND PHYSIOLOGY 2. CHAPTER NINE:CARDIOVASCULAR SYSTEM. LECTURER: MAHAD ALI WARSAME. 2014. Key terms. cardiovascular system. : . a collection of organs that transport blood throughout the body (consists of heart and blood vessels). The Pericardium – . membrane surrounding heart. Serous Pericardium . = 1. Parietal - outer layer. 2. Visceral - inner layer (part of . epicardium. ). Layers of Heart Wall. Epicardium. – outermost layer. Location. Superior surface of diaphragm. Left of the midline. Anterior to the vertebral column, posterior to the sternum. Heart Anatomy. Coverings of the Heart: Anatomy. Pericardium – a double-walled sac around the heart composed of:. ASSIGNMENT. : Most Of The Anatomy We Have Already Done In The Lab, So Make Sure To Do The . * of slide 1 through 29. . As I Will Likely Not Take The Time To Review This Material.. *. PARTS OF THE CARDIOVASCULAR SYSTEM. ♦ An average adult human contains. about 5 liters (5.3qt) of blood.. ♦ The blood makes up about . onethirteenth. of the body’s weight.. ♦ The adult heart weighs about 280 grams (10 oz.). ♦ At rest, the heart pumps out about 80 millimeters. is . about . the . size of a . fist.. Located in the . mediastinum. (space between lungs, backbone, sternum. ).. The distal end of the heart is called the . apex. .. Sagittal view of the thoracic cavity, lung removed. . Structure of Cardiac muscle cells allows propagation of stimuli through the heart wall. Comparison to skeletal muscle:. Similarities. :. striated, long fibers. Differences. : . Shorter & wider. Y-shaped cells. Understandings. U.D.4.1: structure of cardiac muscle cells allows propagation of stimuli through the heart wall. . U.D.4.2: signals from the sinoatrial node that cause contraction cannot pass directly from atria to ventricles.. Located within bony thorax (ribs) and is flanked on each side by lungs. Apex points toward your left hip and rests on your diaphragm. Wall of the Heart. The heart is enclosed by double sac of serous membrane called pericardium. DHO . Ch. 7.8, . pg. 183. HS1. AKA CV or cardiovascular system. Transportation system of the body. Transports O2 and nutrients . to. cells; CO2 & metabolic materials . away. from cells . Structures include the heart, blood vessels, and blood. CIRCULATORY SYSTEM. (BLOOD VESSELS). Cardiovascular system. Heart. Single function. Pump blood through blood vessels. Circulatory system. Blood and lymph vessels. Services tissue needs for . Oxygen. Nutrients. A) . Located . within mediastinum, within the pericardial cavity. B) . About . the size of a fist. C) . Cone-shaped . – apex facing left hip. D) . Main . function is to pump blood. Heart. 2. . Coverings of the heart. Cultural connection. https://www.youtube.com/watch?v=w-j4ZiMZZTg. Diabetes has become very prevalent in Native American communities. Many people with diabetes experience discomfort in their legs and feet, with symptoms such as cramping, numbness, tingling, and pain. One of the culprits is poor circulation (along with nerve damage)..