The _________ divides the thorax and the abdomen.DiaphragmPleuraPericardiumSeptum

The wall that divides the right and left side of the heart isdiaphragmseptumpleurapericardium

The muscle separating the abdominal and thoracic cavities is the:Responsesdiaphramdiaphramdiaphragmdiaphragmdiahragmdiahragmdiapragm

The _________________ separates the thoracic cavity from the abdominal cavity.

A sheet of skeletal muscle extends across the ribcage and lies at the base of the thorax. It separates the thoracic cavity from the abdominal cavity.This muscle is the .

What muscles, along with your diaphragm function in expanding the volume of your thoracic cavity when breathing in ?pectoralis musclesinternal intercostal musclesexternal intercostal musclesgluteal muscles