a muscle action which reduces the size of an opening?

1 ⤊

2007-10-15 16:54:16 · 4 answers · asked by Apo B 1 in Science & Mathematics ➔ Biology

constriction

2007-10-15 16:57:22 · answer #1 · answered by ?! 6 · 1⤊ 0⤋

Dilation and constriction---look these words up--the muscles control both of these reactions

2007-10-15 16:57:59 · answer #2 · answered by fire_inur_eyes 7 · 0⤊ 0⤋

Sphincteric "cotraction and or constriction".

2007-10-15 16:59:56 · answer #3 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 0⤋

DOG STYLE,

2007-10-15 16:57:28 · answer #4 · answered by khaldooni 2 · 0⤊ 0⤋