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general anatomy
index card
Question | Answer |
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general anatomy of the heart | |
describe the location of the apex | is located at the level of the 5th intercostal and mid-clavicular line on the left |
identify the heart | the heart is a hollow muscular organ |
endocardium | |
identify the innermost layer of the heart | endocardium |
describe the function of the chordae tendinae | strings of connective tissue that keep in place the av valves |
explain the function of the endocardium | is o prevent blood cell destruction and clotting |
myocardium | |
identif the middle and contractile layer of the heart | myocardium |
describe what the calcium ions influence | the force of muscle contraction |
identify the myocardium | it is made up of special striated muscle fiber with strong connection with each other intercalated disks and branches that ensure a unified and simulataneous contractions of all muscles fibers |
heart skeleton | |
explain what is the heart skeleton made up | the heart skeleton is made up of four rings of thick connective tissue |
identify the function of the rings | these rings which surround the base of the heart and large vessels create the cardiac septum and provide a solid connection between the heart chambers and a strongattachment for the hart valves |
pericardium | |
define what ligaments is pericardium attached | pericardium is attached with ligaments to the spinal column and diaphragm fixing the heart in its position |
explain parietal pericardium and whats the inner layer | the inner layer is called visceral pericardium or epicardium |
identify the outermost layer of he heart | pericardium |
explain why two layers of pericardium are separated | they are separated by a thin layer of fluid to prevent friction these laer and fluids between them are reerred to as the pericardial sac |
the heart chamber | |
describe the structure in the middle of th heart | is called septum divides the heart into two sides |
describe the function of oxygenated blood | deoxygenated blood with low pressure from veins into the lung pulmonary circulation |
explain in other words what is oxygenated blood | oxygenated blood cmes from the lungs from the left side oxygenated blood with high pressure blood pressure toward the tissuse through arteries systemic circulation |
describe the heart four chambers | they are left and right atria smaller thin-walled chamber that are situated on top of the ventricles receives blood from the lungs and veins and the right and left ventricles larger more muscular |
explain where the top ventricles recieve blood from | receive blood from the lungs and veins |
explain the system of the right and left ventricles | larger more mucular chambers that ejet blood out to the systemic circulation and to the two lungs |
right atrium | |
describe the function of the right atrium | recieves deoxygenated blood returning to the heart from the body via the superior and inferior vena cava which carries blood from the upper body and inferior vena cava which carries blood from the lower body |
explain where the (ra) receives blood from | receives blood from the coronary sinus |
identify the larget vein that drains deoxygenated blood | coronary sinus the largets vein that drains the heart muscles deoxygenated blood |
identify from where the blood in the upper and lower body comes | from the upper body comes from the superior vena cava and from the lower body comes from the inferior vena cava |
right ventricle | |
describe where the right ventricle recieves deoxygenated blood | right ventricle receives deoxyenated blood from the right atrium |
explain where the right atrium pumps blood | it pumps to the lungs for oxyeganted through the pulmonary trunk and then to the pulmonary arteries |
the pulmonary arteries | |
explain the work that the pulmonary arteries does | are the only arteries in the body that carry deoxygenated blood |
explain hy the pulmonary arteries are the only one that carry deoxygenated blood | because the are going away from the body |
left atrium | |
explain the function of the left atrium | receives oxygented blood returning from the lungs via the right and left pulmonary veins |
describe he function of pulmonary veins | they go to the left atrium with oxygenated blood from the lungs |
the pulmonary | |
explain the function of the pulmonary | veins are the only veins in the body that carry oxygenated blood |
describe the pulmonary location | they are going towards the heart |
left ventricle | |
identify where left ventricle recieves oxygnated blood | from the left atrium and pumps it to the body through the aorta |
name the largest artery in the body | aorta |
the heart valves | |
identify the purpose of the heart valves | is to prevent backflow of blood there by assuring uni-directional flow thru the heart |
atrioventricular | |
identify the location of the atrioventricular valves | are located between the atria and ventricles |
idenify one of cusped valves | they have tough fibrous rings |
identify another cusped valve characteristics are | strong and long leaflets |
identify the accessory organs that cusped valve have | they have accessory organs such papillary muscles and chrodae tendinae |
tricuspid valve | |
explain the function of the tricuspid valve | it prevent backflow from ight atrium to right ventricle |
identify the tricuspid valve location | is located between he right atrium and the rght ventricle |
bicuspid miral valves | |
describe the functionof the bicuspid mitral valve | it prevents back flow from the left atrium to left ventricle |
identify the bicuspid mitral valve | is located between the left a and left ventricle |
semilunar | |
explain why is called semilunar | because they have half-moon shaped leaflets |
identify the characteristics semilunar | the semilunar has three leaflets |
identify i intesity | shallow in depth |
explain if seilunar has any accessory organs | they have no accessory organs |
pulmonic valve | |
identify the pulmonic valve location | located between the right ventricle and the pulmonary trunk |
aortic valve | |
identify the aortic valve location | located between the left ventricle and aorta |