Ask a New Question

What is the purpose of the sinoatrial node in the heart?

a) Initiates heart contractions
b) Filters blood
c) Regulates blood pressure
d) Produces hormones

1 answer

a) Initiates heart contractions

Ask a New Question or answer this question.

Similar Questions

1. The average heart beats about 100,000 times a day.Is it True? 2. The heart is located inside the ribcage and just to the
1. 22 answers
Which list is an organ system?(1 point)the liver, the bladder, and the heart the heart, the stomach, and intestines *** the
1. 10 answers
An Adult male's heart pumps about 2.8 million liters of blood a year. If his heart beats 70 times a minute, how much blood does
1. 10 answers
Complete the passage to describe the function of the heart.The pumping of the heart involves the alternate contraction and
1. 1 answer

more similar questions