The circulatory system, sometimes called the cardiovascular system, consists of the heart, blood vessels, and blood. List the vessels that supply blood to the heart identify the major components of the hearts conduction system describe the events of the cardiac cycle name 5 factors that affect heart rate list 2 ways in which stroke volume may be altered describe the pulmonary and systemic circulations describe the structure and function of arteries. Aug 19, 2019 the circulatory system is a major organ system of the body. Cardiac cells specialized to quickly spread action potentials across myocardium weak force generators cardiovascular system heart intrinsic conduction system. The oropharyngeal membrane pulls forward, while the heart and pericardial cavity move. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide. The first layer is the endocardium, which forms the internal endothelial lining of the heart. The human heart is a coneshaped organ, about 5 inches1 long and 3 12 inches broad. The study of the normal heart and diseases associated with it is known as cardiology. The heart is surrounded by the pericardium, a sac characterized by the following two layers. The heart is the pump that circulates the blood through an estimated 75,000 miles of blood vessels. The cardiovascular system is an elaborate network that performs two major tasks. The heart is located in the mediastinum, the cavity between the lungs.
The right pump receives deoxygenated blood from the human body and sends this blood into the lungs, while the left pump receives oxygenated blood from the lungs and pumps it into the systemic circulation. Cardiovascular system 1, heart, structure and function. First, the central portion of the cardiogenic area is anterior to the oropharyngeal membrane and the neural plate. The heart 4 chambers atria atrium, singular ventricles valves atrioventricular semilunar creates pressure to pump blood through 2 circuits pulmonary systemic. The cardiovascular system is sometimes called the bloodvascular, or simply the circulatory, system. Your heart is an organ made mostly of cardiac muscle tissue. The cardiovascular system the heart napa valley college. Masterclass on future directions in free radical research the oxygen free radical system. Systemic circulation delivers blood to all body cells and carries away waste.
An overview of the cardiovascular system the heart is a small organ. In addition to transporting nutrients, the circulatory system also picks up waste products generated by metabolic processes and delivers them to other organs for disposal. Hypernatremia blocks heart contraction by inhibiting ionic calcium transport. It delivers oxygen and nutrients to body organs and removes waste products of metabolism from tissue cells. If you continue browsing the site, you agree to the use of cookies on this website. Oneway system of capillaries that take fluid from tissues back to the heart via subclavian veins. Onepound, fistsized muscular pump with oneway valves. The heart is a four chambered muscular pump, about the size of a clenched fist, and is responsible for pumping blood around the human body.
Figure 1 shows your heart, major arteries, and major veins. Arteries carry blood away from the heart and veins carry blood back to the heart. The heart is a hollow, muscular pump, responsible for the circulation of blood throughout the body. Volume 26 issue 7 cardiovascular research oxford academic. Heart and circulatory system for parents nemours kidshealth. The cardiovascular system blood heart blood vessels cardiovascular system functions transport gases, wastes, food, hormones, blood cells systems affected respiratory urinary digestive musculoskeletal immune system cardiovascular system four separate chambers in humans also other mammals, birds. This chamber forms the most anterior surface of the. Pericardium encloses the heart like a bag visceral, parietal pericardial cavity contains fluid for the heart to float in, reducing friction. Arteries carry blood away from the heart veins return blood to the heart.
Cardiovascular physiology ziser 2404 lecture notes, 2005 1 cardiovascular physiology heart physiology for the heart to work properly contraction and relaxation of chambers must be coordinated cardiac muscle tissue differs from smooth and skeletal muscle tissues in several ways that suit its function in the heart. The cardiovascular system incorporates the heart blood vessels and lymphatic vessels. The main purpose is to maintain adequate blood circulation and hence the distribution of nutrients to tissues and the delivery of metabolic wastes to excretoryurinary organs. Cardiovascular system the heart 202 functions of the heart generating blood pressure routing blood. Nov 17, 2014 this lecture is part 2 of the cardiovascular system covering the heart and vessles associated with it. Define the endocardium, myocardium, and epicardium. In the cavity, the blood vessels at the cranial and caudal poles suspend the heart. The heart is tilted so that its pointed end, the apex, points downward toward the left hip, while the broad end, the base, faces upward toward the right shoulder. By the cardiovascular system we mean the heart, the arteries, the veins and the capillaries of the human body.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. During heart development, the heart tube consists of three layers. The study of the normal heart and diseases associated with it. Compare the function of the atria and the ventricles, and describe the difference between the function.
Cardiovascular system, page 3 of 8 c slide 8 heart 1 general a size fist b dorsal to sternum c tilts to the left apex d pericardial cavity space within thoracic cavity 2 slide 9 external heart structures a 4 chambers 1 right and left atria 2 right and left ventricles. You will also learn about cardiac muscle, cardiac physiology, and heart development. List the vessels that supply blood to the heart identify the major components of the hearts conduction system describe the events of the cardiac cycle name 5 factors that affect heart rate list 2 ways in which stroke volume may be altered describe the pulmonary and systemic circulations. Frankstarling law of the heart an increase in ventricular volume at the end of diastole has a direct increase on stroke volume factors the influence preload. In the functioning of the cardiovascular system the heart. Blood volume varies with age, body size, and gender. It consists of the heart, which is a muscular pumping device, and a closed system of vessels called arteries, veins, and capillaries. The cardiovascular system also expels gaseous waste in the form of carbon dioxide.
Up to 3 liters of watery fluid called lymph leaks through the blood vessels into the surrounding tissues every day. The blood flow through the heart is described and the regulatory mechanisms of the heart are identified and discussed. Its major components are the hearta hollow muscular pump and a circulatory system of large and small elastic. Introduction organs of the body vicera upper appendages and head lower appendages and legs v e n ae c a v a s u p r i o r v e n a c. Part a blood vessels delivery system of dynamic structures that begins and ends at heart arteries. Cardiovascular system, page 1 of 8 slide 1 lecture notes. This lecture is part 2 of the cardiovascular system covering the heart and vessles associated with it. The heart 4 chambers atria atrium, singular ventricles valves atrioventricular. This system transports oxygen and nutrients in the blood to all of the cells in the body. In this course, you will learn about the anatomy and function of the human cardiovascular system.
Notes following the chapter over the cardiovascular system, which focuses on the structure of the heart and its connecting vessels. Heart action is dependent upon stroke volume and heart rate together called cardiac output. Heart outline of class lecture after studying part i of this chapter you should be able to. The cardiovascular system slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Include an explanation of pericarditis and cardiac tamponade. The endocrine and immune systems also use the blood circulation as conduits for hormones, immune cells.
Blood vessels are the conduits through which blood is transported and blood contains the valuable nutrients and oxygen that are needed to sustain tissues and organs. A normal healthy adults heart will pump over 7000litres of blood each day. The heart consists of two pumps which are separated by a partition. Slide 2 introduction a components of the cardiovascular system 1 blood 2 blood vessels 3 heart 4 lymphatic vessels b slide 3 blood vessels 1 types of blood vessels a arteries and arterioles b capillaries c venules and veins. The groundbreaking discovery in 1987, that a previously unidentified molecule, rather loosely termed endotheliumderived relaxing factor edrf, was in fact nitric oxide no, caused a paradigm shift in scientists and clinicians understanding of cardiovascular physiology and. Introduction organs of the body vicera upper appendages and head lower appendages and legs v e n ae c a v a s u p r i o r v e n a c a v a i n f e r i o r a o r t a hepatic. Heart size about 14 cm x 9 cm the size of a fist coverings of the heart. The cardiac conduction system is examined, outlining the normal sequence of events in the cardiac cycle.
Describe the characteristics of the two types of cardiac muscle cells contractile and autorhythmic. The heart provides the muscle needed to pump blood throughout the body. Blood pressure is normally directly proportional to the volume of blood within the cardiovascular system. In addition, a brief overview of some common cardiac disorders is provided. Describe the location of the heart, the structures of the pericardium and the structures of the heart wall. The cardiovascular system consists of the blood, heart, and blood vessels. The ribs serve as the protection to the heart and lungs within the thoracic cavity. Hyperkalemia leads to heart block and cardiac arrest. Bring heart dissection handout from web to lab, as well as lab material. Feb 07, 2008 the cardiovascular system slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. It is located between the lungs, behind the sternum. Heart physiology 2 with adams at american military university studyblue flashcards. Hypercalcemia dramatically increases heart irritability and leads to spastic contractions.
Describe the autorhythmic cells and the conduction system of the heart. The cardiovascular system is the system of blood circulation. Cardiovascular system biology 014 with hicks at texas tech university studyblue flashcards. The second is the myocardium, which forms the muscular wall.
T he average size of an adult humans heart is 14 centimeters long and 9 centimeters wide. The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Describe the size, shape, and location of the heart compare cardiac muscle to skeletal and smooth muscle explain the cardiac conduction system describe the process and purpose of an electrocardiogram explain the cardiac cycle calculate cardiac output chapter 19 the cardiovascular system. Describe the size, location, and orientation of the heart. Pulmonary circuit carries carbon dioxiderich blood from the heart to the lungs and back systemic circuit transports oxygenrich blood from the heart to the rest of the body and back. The cardiovascular system helps maintainhomeostasis, a state of stable internal conditions. Cardiology is the study of the heart, and cardiologists are the physicians who deal primarily with the heart. Although it is close to the neural tube and formation of the brain vesicles, the central nervous system extends over the central cardiogenic area and the future pericardial cavity fig. As the name implies, blood contained in the circulatory system is pumped by the heart around a closed circle or. Which chamber of the heart pumps blood into the systemic circulation. When the heart contracts, or squeezes, pressure is created. Although the term heart is an english word, cardiac heartrelated terminology can be traced back to the latin term, kardia.