'A hiccup is a sudden involuntary contraction of this skeletal muscle, a major muscle used in breathing'
the diaphragm
BODY BASICS: A hiccup is a sudden involuntary contraction of this skeletal muscle, a major muscle used in breathing
A hiccup is a sudden involuntary contraction of this skeletal muscle, a major muscle used in breathing
A hiccup is a sudden involuntary contraction of this skeletal muscle, a major muscle used in breathing
BODY BASICS
the diaphragm
BODY BASICS