Bms 508 Exam 2 Random Terms

Front 1

Bronchioconstriction

Back 1

Caused by parasympathetic ANS activation

Front 2

Bronchiodilation

Back 2

caused by sympathetic ANS activation

Front 3

External respiration

Back 3

All processes involved with the exchange of O2 and CO2 with the environment

Front 4

Internal respiration

Back 4

All processes involved with the uptake of O2 and production of CO2 within the individual cells

Front 5

Hypoxia

Back 5

Low tissue oxygen levels

Front 6

Apoxia

Back 6

Complete lack of oxygen in tissues

Front 7

Pulmonary ventilation

Back 7

The physical movement of air moving in and out of the lungs; provides alveolar respiration

Front 8

Atmospheric pressure

Back 8

The weight of air

Front 9

Boyle's Law

Back 9

Pressure is inversely related to volume

Front 10

Compliance

Back 10

An indicator of expandability

Front 11

What affects compliance?

Back 11

connective tissue structure of the lungs, level of surfactant production, and mobility of the thoracic cage

Front 12

Intrapleural Pressure

Back 12

pressure in space between parietal and visceral pleura. Min: -4mm Hg. Max: -18mm Hg

Front 13

Tidal Volume (TV)

Back 13

amount of air moved in and out of lungs in a single respiratory cycle

Front 14

Muscles used in inhalation

Back 14

Diaphragm & external intercostal muscles

Front 15

Muscles used in exhalation

Back 15

Transversus Thoracic & internal intercostal muscles; abdominal muscles

Front 16

Elastic Rebound

Back 16

When inhalation muscles relax

Front 17

Eupnea

Back 17

quiet breathing (costal=shallow, and diaphragmatic=deep breaths)

Front 18

Hyperpnea

Back 18

Forced breathing

Front 19

Respiratory Minute Volume

Back 19

Amount of air moved per minute.

Front 20

Resting Tidal Volume

Back 20

In a normal respiratory cycle

Front 21

Expiratory Reserve Volume

Back 21

after a normal exhalation

Front 22

Residual volume

Back 22

After maximal exhalation (Minimal volume in a collapsed lung)

Front 23

Inspiratory Reserve Volume

Back 23

After a normal inspiration

Front 24

Dalton's Law

Back 24

Each gas contributes to the total pressure

Front 25

Henry's Law

Back 25

The actual amount of a gas in solution at given partial pressure and temperature depends on the solubility of the gas in that particular liquid

Front 26

Normal Partial Pressures

Back 26

•Inpulmonary vein plasma•
PCO2=40 mm Hg
PO2=100 mm Hg
PN2= 573 mm Hg

Front 27

Bohr effect

Back 27

the result of pH on hemoglobin-saturation curve

Front 28

Temperature increase

Back 28

Hemoglobin releases more oxygen

Front 29

Temperature decrease

Back 29

Hemoglobin releases less oxygen/holds it more tightly

Front 30

Fetal Hemoglobin

Back 30

Binds more O2 than Adult Hb

Front 31

Dorsal Respiratory Group (DRG)

Back 31

Inspiratory center; focuses on quiet and forced breathing

Front 32

Ventral Respiratory Group (VRG)

Back 32

Inspiratory and expiratory group; functions only in forced breathing

Front 33

Apneustic centers

Back 33

provides stimulation to its DRG center

Front 34

Pneumotaxic Centers

Back 34

inhibit the apneustic centers; promote passive or active exhalation

Front 35

Hypercapnia

Back 35

An increase in arterial PCO2

Front 36

Hering-Bruer Reflexes

Back 36

Inflation reflex: prevents overexpansion of lungs
Deflation reflex: inhibits expiratory centers; stimulates inspiratory centers during lung deflation