The large arteries close to the heart have a thick elastic layer in their walls.
Which statements about this layer are correct?
1) helps to maintain the blood pressure in arteries
2) reduces friction within the arteries
3) prevents too much pressure bursting the artery wall
1 )
1, 2 and 3
1 and 3 only
3 )
1 only
4 )
2 and 3 only
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!