Cardiovascular System - Heart

How do the highlighted valve cusps function during a ventricular contraction? They are held closed by the chordae tendineae to prevent blood from flowing back into the right atrium. They are pushed closed by the papillary muscles to prevent blood from flowing back into the right atrium. They are pulled open by the chordae tendineae to allow blood to flow into the right ventricle. They are pushed open by the increasing blood pressure to allow blood to leave the right ventricle.

They are held closed by the chordae tendineae to prevent blood from flowing back into the right atrium.

Which artery is highlighted? marginal left coronary circumflex anterior interventricular

anterior interventricular

Which artery is highlighted? brachiocephalic trunk left subclavian left common carotid aortic arch

aortic arch

Which vessel is highlighted? ascending aorta inferior vena cava pulmonary trunk superior vena cava

ascending aorta

Which valve is highlighted? bicuspid pulmonary semilunar tricuspid aortic semilunar

bicuspid

Which artery is highlighted? circumflex anterior interventricular right coronary left marginal

circumflex

What type of connective tissue is the highlighted structure composed of? dense irregular reticular dense regular elastic

dense irregular

Which vein is highlighted? small cardiac middle cardiac pulmonary great cardiac

great cardiac

Which vessel is highlighted? coronary sinus right coronary artery superior vena cava inferior vena cava

inferior vena cava

Which structure is highlighted? right auricle left ventricle left auricle right ventricle

left auricle

Which artery is highlighted? left coronary circumflex right marginal left marginal

left marginal

Which structure is highlighted? pericardium myocardium epicardium endocardium

pericardium

Which vessels are highlighted? pulmonary veins right and left coronary arteries superior and inferior vena cava pulmonary arteries

pulmonary veins

The function of the highlighted structure is to prevent backflow of blood into the ________. left atrium left ventricle right atrium right ventricle

right atrium

Which structure is highlighted? left coronary artery posterior interventricular artery right auricle right coronary artery

right coronary artery

Which vessel is highlighted? great cardiac vein right marginal artery anterior interventricular artery right coronary artery

right marginal artery

Which vessel is highlighted? ascending aorta superior vena cava pulmonary vein pulmonary trunk

superior vena cava

Which structure is highlighted? ascending aorta visceral pericardium covering heart pulmonary trunk fibrous pericardium covering heart

visceral pericardium covering heart