Respiratory System

Pain

________ and emotion- limbic system affects breathing in response to emotions.

Bronchioles

________ divide into structures called alveoli.

pleural cavity

The pressure in ________ allows lung to expand.

Co2

________ (main regulator)- high levels signals medulla to high breathing.

Gas exchange

________: gasses diffuse from high to low concentration.

Pleura

________ consists of two linings with a fluid filled space between then.

Elasticity of lung tissue

________ allows more airflow.

Resistance

________ and air flow- like blood flood, greater resistance means less airflow.

Oxygen levels

________- low oxygen signals medulla to high breathing.

Pleura

________ is filled with serous fluid.