Yes: They are remarkable little structures and give the blood the little extra kick that makes the four-chambered heart the most effective model. Thanks for asking.
Answered 12/3/2012
5.7k views
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question