Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Biology 10.2
Biology-Circulation and Respiration Chapter 10 Section 2
| Question | Answer |
|---|---|
| The seventeenth-century Englishman who was the first to describe the circulation of the blood accurately, called the heart "the sovereign of the body" | William Harvery |
| The heart is encased within a tough white sac called the _____, which helps support and protect the heart. | pericardium |
| Internally, the main features (of the heart) are its four hollow spaces or ____. | chambers |
| The two pumping mechanism of the heart consists of two thin-walled upper chambers, called ______, and two thick-walled lower chambers called the ventricles. | atria |
| The two pumping mechanism of the heart consists of two thin-walled upper chambers, called atria, and two thick-walled lower chambers called the ventricles. | ventricles |
| A thick vertical wall called the _____ divides the left atrium and left ventricle from the right atrium and right ventricle. | septum |
| The walls of the heart's four chambers can be divided into three layers. The most important layer is the _____, which contains the muscles of the heart. | myocardium |
| Lining the interior of the heart's chambers is the _______, which provides a smooth coating for the heart's interior. | endocardium |
| The outside of the heart is coated with a layer of slippery tissue called the _______, which allows the heart to move easily within the pericardial sac as it beats. | epicardium |
| Blood is prevented from flowing in the wrong direction by means of four _____ that are strategically located in the heart. | valves |
| These two valves -the bisuspid valve and the tricuspids valve- are known as the _-_ _______ because they allow blood to flow from each atrium into corresponding ventricle. | A-V valves |
| The ____ ____ (mintral valve) connects the left atrium and left ventricle, while the tricuspid valve connects the right atrium and right ventricle. | bicuspid valve |
| The bicuspid valve (mintral valve) connects the left atrium and left ventricle, while the ______ _____ connects the right atrium and right ventricle. | tricuspid valve |
| Two valves in the heart allow blood to flow to the body from ventricles but prevent blood from flowing back into the ventricles from the body. These are known as ____ _____ because each of their three cusps is shaped somewhat like the crescent moon. | semilunar valves |
| The ______ ________ ________ allows blood to exit the left ventricle and enter the aorta (which carries blood to the bod tissues), while the pulmonary semilunar valve allows blood to exit the right ventricle and enter the pulmonary arteries. | aortic semiluna valve |
| The aortic semiluna valve allows blood to exit the left ventricle and enter the aorta (which carries blood to the bod tissues), while the _________ ________ ________ allows blood to exit the right ventricle and enter the pulmonary arteries. | pulmonary semilunar valve |
| This deoxygenated blood returns to the heart through the _______ ______, the body's largest veins. | venae cavae |
| The _____ _____ _________ returns blood from the upper part of the body, and the inferior vena cava returns blood from the lower part of the body. | superior vena cava |
| The superior vena cava returns blood from the upper part of the body, and the ______ _____ _____ returns blood from the lower part of the body. | inferior vena cava |
| The right ventricle is inflated w/ blood, it contracts,the pressure of blood shuts the tricuspid valve and forces open pulmonary semilunar valve,allowing blood to pass through the pulmonary semilunar valve into the ___ ____ it brings blood to the lungs | pulmonary artery |
| This ______ _____ travels back to the heart from the lungs through four pulmonary veins-2 for each lung- and enters the left atrium and left ventricle, inflating and enters the left atrium and left ventricle, inflating them. | oxygenated blood |
| This _oxygenated blood travels back to the heart from the lungs through four _____ _______-2 for each lung- and enters the left atrium and left ventricle, inflating and enters the left atrium and left ventricle, inflating them. | pulmonary veins |
| The left ventricle then contracts, closing the bicuspid valve and forcing blood through the aortic semilunar valve into the _____, the body's largest artery. | aorta |
| Blood enters this network by means of the 2 ______ ______, which branch from the base of the aorta (the largest artery that exits the left ventricle). | coronary arteries |
| After supplying the cardiac muscle tissues with fuel and oxygen, blood leaves these tissues with fuel and oxygen, blood leaves these tissues through blood vessels known as ____ ____. | cardiac veins |
| The person is said to have suffered a ____ ____, a type of heart failure cause by a blockage of blood flow to the heart muscles. | heart attack |
| A heart attack is not the only type of heart failure that may occur. A condition called ______ ______ occurs when the heart ceases to beat and instead twitches randomly. | ventricular fibrillation |
| Many heart repairs require the aid of a _____-_____ ______ because the heart must be stopped and often opened. | heart-lung machine |
| The simplest type of coronary artery repair is ______, a procedure which does not involve opening the chest. | angioplasty |
| Sometimes the clogs in the coronary arteries are too extensive to be helped by angioplasty and a _____ _____ _____ must be performed.Which a large vein is removed form the patient's leg and cut into pieces and sewn into different places | coronary artery bypass |
| In _____-______ _______, the surgeon removes a faulty heart valve and replaces it with an artificial valve (made of stainless steel or plastic) or with a valves from a pig's heart. | valve-replacement surgery |
| Sometimes the heart is damaged beyond repair, and a _______ _______ becomes necessary. The damaged heart may be replaced with a donor heart from a fatal-accident victim. | heart transplant |
| The contracting and pumping phase of the heart action is called _______. | systole |
| The relaxing and filling phase is known as _______. | diastole |
| The cardiac cycle is perceived as a ______. | heatbeat |
| An abnormal rushing or blowing sound produced by the valve damage is called a _______ ________. | heart murmur |
| Describe a cardiac muscle cell. | They are short, branched, and contain only one nucleus per cell. |
| How many nucleus does a cardiac muscle cell contain? | One. |
| In addition, cardiac muscle cells lack what systems. | The fuel and oxygen storage systems |
| Why do cardiac muscle cells lack the fuel and oxygen storage systems to make room for what? | More mitochondria "power plants." |
| Cardiac muscle diggers from the skeletal muscle in that it is _____-______. Although cardiac muscles are stimulated to beat by the heart's built-in pacemaker, cardiac muscle cells will beat even if separated form the heart. | self-exciting |
| The beating of the heart is regulated by a system of special heart cells known as the ______ _______ _________. | cardiac conduction system |
| The master control unit of the heart is the _____ _______. | sinoatrial node |
| What is the sinoatrial node also known as? | S-A node. |
| What is the S-A node commonly referred to? | The pacemaker of the heart. |
| A doctor specializing in the heart and its disorders. | cardiologist |
| A cardiologist can study the electrical activity of the heart by means of an _________. | electrocardiogram |
Created by:
Teens
Popular Biology sets