Age-related changes in heart function include...?

Question

1). decrease in cardiac reserve
2). decrease in resting heart rate
3). valvular sclerosis
4). fibrosis of cardiac muscle

Answer 1

The simple answer is a general increase in the..."4). fibrosis of cardiac muscle"

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=16143657&dopt=Abstract

All the best!

Answer 2

Virtually all appear in one form or other in geriatric age.