respiratory system Flashcards Preview

A&P2 > respiratory system > Flashcards

Flashcards in respiratory system Deck (15):
1

what are the 2 parts of respiratory system?

1. respiratory zones
2. conducting zones (large conducting zone and smaller conducting zone)

2

conducting zone?

moves air in and out of body
1. nose+mouth
2. trachea
3. right and left primary bronchi
4. secondary bronchi
5. tertiary bronchi
6. terminary
7. bronchioles

3

what maintains shape of respiratory passage?

large cartilage- trachea

4

what does the pressure on the inside of lungs called?

intrapulmonary pressure

5

explaing breathing?

inhale: diaphragm contracts, pulling the floor of thorax down. intrapulmonary pressure drops below atmostpheric pressure. (air flows into lungs until pressure is equal)
exhale: diaphragm relaxes, pushing floor of thorax up. intrapulmonary pressure exceeds atmospheric pressure. (air flows out of lungs till pressures are equal.)

6

what maintains lung shape?

intrapleural pressure (neg. pressure between lungs and thorax{plueral space})

7

how is intrapleural pressure maintained?

the lymphatic system drains its constantly to maintain low pressure. intrapleura pressure must be neg. in order to maintain the lungs filled with air.

8

what is the inside of the aveoli consider?

the external environment. gas exchange that occurs there is consider external
respiration
interaction of gasses in aveoli with gases and gasses in blood.

9

internal respiration?

interaction of gases in blood with gases in tissues

10

name the 3 ways carbon dioxide is transported?

1. dissolved in plasma
2. bind to hemoglobin to make carboxaminohemoglobin (reversable as well)
3. binds with water to make bicarbonate (it also created H+ ion in rbc- ability to buffer ph changes in body) reversable as well.

11

hb+02=

hb02

12

the oxyhemoglobin dissociation curve?

graph to describe for any given amount of oxygen, how much binding do i get? (oxygen hemoglobin binding. lungs has highest concentration of oxygen=highest amount of binding.)

13

ventilation-perfusion coupling?

how much blood flow we are going to send to an aveolis relative to the amount of air on the inside.
matching amount of blood flow to air.
aveoli with low ventilator have lowest perfusion
aveoli with high ventilation have high blood flow.

14

copd:

1. chronic bronchitis: asthma: inflammation of resp. passage.
2. emphysema: breakdown of support tissue that decrease lung surgace area.

15

name some characteristics of copd:

overproduction of mucous
cough
wheezing
sob