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a and p lab sem. 2

anatomy of the heart

QuestionAnswer
the vessels that drain blood from the myocardial tissue and deliver the blood to the coronary sinus are the ______________________ cardiac veins
the atrioventricular valves are attached to ________________, which are anchored to __________. these structures help prevent the valves from prolapsing chordae tendineae; papillary muscles
the ______________________ deliver deoxygenated blood to the lungs pulmonary arteries
oxygenated blood leaves the heart to be delivered to the rest of the body through a large blood vessel called the ________ aorta
the left and right __________ are the smaller chambers of the heart atria
four _______________________________ deliver oxygenated blood to the left atrium pulmonary veins
the inferior region of the heart is called the ___________ apex
_____________________ covers the outer surface of the heart epicardium (or visceral pleura)
deoxygenated blood leaves the heart through the ______________. this vessel divides into the left and right pulmonary arteries pulmonary trunk
the ________________ valve seperates the left atrium and left ventricle left atrioventricular (bicuspid or mitral)
the right ventricle is seperated from the pulmonary trunk by the _____________________ valve pulmonary semilumar
the muscular layer of the heart wall is called the _______________ myocardium
the ____________________ valve prevents blood from moving from the right ventricle back into the right atrium right atrioventricular (tricuspid)
the superior and inferior ___________________ deliver deoxygenated blood to the right atrium vena cava
the left and right _____________________ branch off the aorta at the level of the aortic semilunar valve coronary arteries
the vessel on the posterior surface of heart that empties into right atrium is the ______________________ coronary sinus
cusps of tissue seperating the left ventricle and the aorta comprise the ________________________ valve aortic semilunar
the fibrous rings of connective tissue that provide attachments for the heart valves, plus part of the atrioventricular septum, constitute the ________________ of the heart skeleton
explain the impact of blood vessel diameter on the flow through that vessel smaller diameter= more resistant flow
predict what would happen to resistance if you tried to pass syrup through the tubing instead of water. which of the variables in the equation will be affected (R=8nL/pir^4)? is that variable increased or decreased? syrup would have a higher viscosity (be less fluid) than water, so "n" would be higher. this would increase the resistance to flow
explain how the tubing experiment contributes to your understanding of the effects of atherosclerosis in artherosclerosis plaque deposits made the inside diameter of blood vessels smaller. this requires resistance to flow through the vessel, so more pressure is required to move blood through the vessel
explain how the tubing experiment contributes to your understanding of the effects of dehydration on circulation dehydration would increase the viscosity of the blood, increasing its resistance to flow (making it less fluid)
arteriosclerosis is also known as "hardening of the arteries". explain what properties of arteries are affected by arterisclerosis and how arteriosclerosis affects circulation arteriosclerosis makes a vessel less elacstic, so it cannot stretch when a larger quantity of blood is delivered to it. stretching would make the diameter larger, reducing resistance, so the lack of stretch would increase resistance
what is the role of the intercalated disks in the function of cardiac muscle tissue? allow rapid electrical signal transmission between cardiac muscle cells, ensuring the heart contracts as a coordinated unit, effectively pumping blood throughout the body
_____________ lines the chambers of the heart endocardium
the 2 larger chambers of the heart are the left and right _____________ ventricles
Created by: allijeli
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