Which structure is responsible for maintaining atrioventricular valve closure in the heart?
a. purkinje fibers
b. foramen ovale
c. papillary muscle
cardiac myocyte
Answer: c. papillary muscle
Which structure is responsible for maintaining atrioventricular valve closure in the heart?
a. purkinje fibers
b. foramen ovale
c. papillary muscle
cardiac myocyte
Answer: c. papillary muscle