Physics Ch. 14 Notes 2

Front 1

The four phases of a cough:

Back 1

irritation, inspiration, compression, expulsion

Front 2

When connections to the higher pneumotaxic center and vagus nerves are severed, the ____ ____ starts to control breathing.

Back 2

apneustic center

Front 3

alveolar ventilation increases by approximately ____ lpm for each mmHg rise in _____

Back 3

2/3 lpm;
PaCO2

Front 4

Peripheral chemoreceptors in the arterial blood are stimulated by:

Back 4

high CO2, high H+ ions,
and low p.h.

Front 5

Peripheral chemo receptors in the arterial blood are also enhanced by:

Back 5

low PO2

Front 6

At high altitudes, the low barometric pressure _____ both inspired and arterial PO2 levels, which excites the ____:

Back 6

Decreases;
peripheral chemoreceptors

Front 7

The aortic bodies send their impulses over the:

Back 7

Vagus nerve

Front 8

Peripheral chemoreceptors are located in small highly vascular structures known as the _____ and _____ bodies:

Back 8

Aortic & carotid

Front 9

The stimulatory affect of chronically high CO2 on the central chemoreceptors gradually declines over ____ days:

Back 9

1-2 days