A&p 2 Test 4 Pg 72,73

Front 1

Respiratory center

Back 1

The basic respiratory rhythm is controlled by the _____ _____ which is made up of autonomic centers in the medulla and pons.

Front 2

Dorsal respiratory

Back 2

______ ______ group is an inspiratory center that stimulates the diaphragm and external intercostal to contract and cause inspiration (inhalation). The DRG functions during every cycle and sends axons through the Phrenic nerve.

Front 3

Central respiratory

Back 3

____ ____ group is an expiratory center that is active only during forced exhalation. When active the VRG stimulates the internal intercostal and rectus abdominis muscles to contract.

Front 4

Apneustic

Back 4

______ center is located in the pond and stimulates the DRG to cause inhalation.

Front 5

Pneumotaxic

Back 5

______ center is located in the pond and inhibits the DRG so that quiet exhalation occurs.

Front 6

Inflation reflex

Back 6

_____ reflex prevents over expansion of lungs. Occurs during extended inhalations, action potential sends signal to exhale.

Front 7

Deflation reflex

Back 7

_____ reflex prevents the lungs from collapsing due to over deflation. As vol. of lung decreases action potentials are sent to VRG to stimulate DRG and begin inhalation.

Front 8

Protective reflexes

Back 8

_______ reflexes involve coughing and sneezing which are responses to injury or irritation of the respiratory mucosae by pathogens and debris. Included is mucus escalator.