Chpt. 23

Name of the air-filled pockets within the lungs where all gas exchange takes place.

What lines the conducting portion of the respiratory system?

What is the sound production at the larynx called?

The groove along the medial surface of the lunch that each bronchus travels to is called a ________.

Also where pulmonary nerves, BV's and lymphatics enter the lunch

_______ is the condition where there is an inflammation of bronchial walls that causes constriction and breathing difficulty.

What is Bronchodilation and what causes it?

What is Bronchoconstriction and what is it caused by?

______ is excessive stimulation and bronchoconstriction that severely restricts airflow.

______ contains the supportive tissues and lymphatic vessels of the lungs

______ is an oily secretion that contains phospolipids and proteins and reduces surface tension.

_______ is the thin membrane of alveoli where gas exchange takes place

The Respiratory membrane contains:
A) squamous epithelial lining
B) fused basal laminae
C) endothelial calls
D) all of these

______ is an inflammation of the lobules of the lungs that causes fluid to leak into alveolo and compromises function of the respiratory membrane.

The respiratory exchange receives blood from:
A) all of these
B) alveolar capillaries
C) pulmonary veins
D) arteries of pulmonary circuit

______ respiration includes all processes incolced in exchanging 0₂ and CO₂ with the environment.

_______ respiration involves the uptake of O₂ and production of CO₂ w/in individual cells

Which is NOT one of the processes of external respiration?
A) gas diffusion (across membranes and capillaries)
B) transport of O₂ and CO₂
C) production of CO₂
D) pulmonary ventilation (breathing)

______ is the physical movement of air in and out of respiratory tract that provides alveolar ventilation

_______ allows air into the pleural cavity
A) pneumothorax
B) stroke
C) aneuryism
D) atelectasis

_____ is the result of a pneumothorax; called a "collapsed lung"
A) atelectasis
B) stroke
C) pneumothorax
D) aneuryism

Inhalation is
A) active
B) either active or passive
C) neither
D) passive

Exhalation is:
A) neither
B) either active or passive
C) active
D) passive

Which is NOT a mechanism of breathing?
A) accessory muscles
B) diaphragm
C) external intercostal muscles
D) pectoral muscles

When inhalation muscles relax, the elastic components of muscles and lungs recoils, returning the lungs to their original position in a process called ________
A) stical alveoli movement
B) rebounding lung
C) atmospheric pressure
D) elastic rebound

States that each gas contributes to the total pressure in proportion to its # of molecules
A) Boyle's law
B) Dalton's law
C) Sam's law
D) Henry's law

______ is the pressure contributed by each gas in the atmosphere.
A) partial pressure
B) atmospheric pressure
C) none of these

States that when a gas under pressure comes in contact with a liquid, gas dissolves in liquid until an equilibruim and that the amount of gas in a solution is proportional to partial pressure of that gas.
A) Sam's law
B) Henry's law
C) Boyle's law
D) Dalton's law

Factor(s) that effect hemoglobin is/are
A) blood pH
B) metabolic activity
C) temperature
D) all of these

According to the oxygen-hemoglobin saturation curve, higher PO2 results in a _____ Hb saturation.
A) less
B) greater
C) unchanged

The Bohr Effect is caused by
A) H2O
B) H
C) O2
D) CO2

Fetal Hb binds ____ O2 than adult Hb
A) equal
B) less
C) more

Co2 can be carries in the blood stream by being:
A) bound to protein portion of hemolobin
B) converted to carbonic acid
C) dissolved in plasma
D) all of these

The Dorsal Respiratory Group (DRG) functions in
A) forced breathing
B) quiet breathing
C) neither
D) both

The Ventral Respiratory Group (DRG) functions in
A) both
B) quiet breathing
C) neither
D) forced breathing

Hypercapnia is an _______ in arterial P_CO2 that stimulates chemoreceptors to restore homeostatis
a) increase
b) decrease

Hering-Breuer Reflexes
A) all of these
B) stimulates inspiratory centers during lung deflation
C) inhibit expiratory centers
D) prevent overexpansion of lungs