Respiratory Topic3&5 Ruth

Pressure and volume are related in inverse/opposite ways. This is known as

__________ due to the weight of the air, is the pressure that moves air into the lungs.

Sea level air pressure = 760 mm Hg= 760____ =1 atmosphere

If pressure inside the lungs and alveoli decreases, atmospheric pressure pushes air in. This is:

The diaphragm is stimulated by the ______ nerves.

When this is stimulated, the thoracic cavity enlarges, the intra-alveolar pressure falls below atmospheric pressure and air is forced in.

The moist inner surface of alveoli attract each other, and creates ______ ____ , making it difficult for the alveoli to inflate and can collapse them.

Lipoproteins secreted into alveolar that reduce the alveoli's tendency to collapse, and is essential for new-born lungs to inflate.

D/t the elastic tissue of the lungs and it's stretching during inspiration

Forces responsible for _______ come from elastic recoil and surface tension.

As the volume in a container is increased, the pressure in the container will decrease, and vice-versa.

Neuron groups in the brainstem that initiate impulses to control breathing

Includes 2 neuron respiratory groups that extend the length of the medulla: the ventral and dorsal respiratory gruops

The basic rhythm of breathing arises from this medullary respiratory group

Inspiratory muscles, primarily diaphragm, are stimulated by this medullary respiratory group that cotribute to forceful breathing

This neuron group assists the rhythm of breathing by limiting inspiration.