WorksheetsLizizz CE1 - Jones - Heart Anatomy
Total questions: 22
Worksheet time: 19mins
How large is an average heart?
500 g
300 g
1000 g
200 g
Pericardial cavity
Contains 5-30 ml of fluid
Epicardium
Serous layer of cells which cover heart; inner layer of pericardium
Myocardium
Cardiac muscle tissue, thickest layer, spirals around, wringing motions
Endocardium
Thin inner layer of heart, continues with endothelium of blood vessels
Pericardium
Double walled sac composed of fibrous layer and serosal layer
Which layer of the heart contains prostacyclin to prevent friction for the flow of blood?
Pericardium
Myocardium
Endocardium
Epicardium
Reorder the following layers of the heart from the outer edge to its inner.
Fibrous layer of parietal pericardium
Serous layer
Pericardial space
Epicardium
Myocardium
Endocardium
Which chamber contains the thickest layer of muscle surrounding it?
Right atrium
Left atrium
Right ventricle
Left ventricle
My buns of steel
Select all the layers of the heart composed of squamous epithelial cells.
Fibrous layer of pericardium
Serosal layer of pericardium
Epicardium
Myocardium
Endocardium
Patent ductus arteriosis is a condition in which a specific hole in the heart does not properly close after birth. Between which two structures does this hole reach?
Right ventricle
Pulmonary trunk
Left ventricle
Aorta
Superior vena cava
Severus Snape is admitted to the ER after Fred Weasley's latest prank triggers a heart attack. The muggle hospital diagnoses him with a myocardial infarction. Where in Snape's heart does Madam Poppy Pomfrey need to direct her wand to remove Snape's blood clot?
Right coronary artery
Left anterior descending artery
Right marginal artery
Left obtuse marginal artery
Which valves are connected to chordae tendinae?
Aortic valve
Mitral valve
Tricuspid valve
Pulmonary valve
AV valves
A sports injury somehow manages to damage no other part of the heart besides the pulmonary valve. Which chamber of the heart is now receiving a back flow of blood due to this injury?
Right atrium
Right ventricle
Left atrium
Left ventricle
Reorder the following flow of blood (part 1) starting with a blood cell entering through the superior vena cava.
Right atrium
Tricuspid valve
Right ventricle
Pulmonary valve
Pulmonary trunk
Reorder the following flow of blood (part 2) starting with a blood cell entering through the pulmonary trunk.
Lungs
Pulmonary veins
Left atrium
Bicuspid / Mitral valve
Left ventricle
Aortic valve
Aorta
What % of total circulation does coronary circulation (the process of supplying O2 and nutrients to heart muscle) comprise of?
5%
10%
30%
50%
When is coronary flow the greatest?
Systole
Diastole
Open aortic valve
Ventricular contraction
Closed aortic valve
Myocardial infarction
Chest pain due to brief loss of blood flow
Lack of blood supply to myocardium
Lack of O2 to cardiac tissue and muscles
Tissue death
Angina
Chest pain due to brief loss of blood flow
Lack of blood supply to myocardium
Lack of O2 to cardiac tissue and muscles
Lactic acid production causes pain
Ischemia
Chest pain due to brief loss of blood flow
Lack of blood supply to myocardium
Lack of O2 to cardiac tissue and muscles
Causes tissue death
True or false? Na+ works in cardiac muscle (and travels through gap junctions in muscle fibers) to help all tissue in a particular region of the heart contract simultaneously.
True
False
Reorder the following steps of cardiac muscle contraction
Depolarization
VG Ca2+ channels open
Ryanodine receptor channels open
Ca2+ is released
Ca2+ binds to triponin
Select all that allows for muscle relaxation
Na+/Ca+ exchanger
SR Ca2+-ATPase
Decrease in ICF Ca2+
Membrane Ca2+-ATPase
Increase in ICF Ca2+
Which of the following is NOT beta-adrenergic?
Digitoxin (Crystodigin)
Dopamine
Epinephrine
Norepinephrine
Cardiac glycosides increase contractility and treat heart failure by (a) Na+/K+ ATPase, which (b) (c) Ca2+ by (d) activity of Ca2+/Na+ exchanger.
