LUNG PHYSIOLOGY Flashcards
WHAT DOES THE RESPIRATORY MEMBRANE CONSIST OF
AN ENDOTHELIAN CELL AND T1 ALVEOLAR CELL (SQUAMOUS EPI)
WHAT IS A TYPE 1 ALVEOLAR CELL
SQUAMOUS EPITHELIUM
WHAT IS A TYPE 2 ALVEOLAR CELL
CUBOIDAL EPITHELIUM
WHAT DOES A TYPE 2 ALVEOLAR CELL SECRETE
SURFACTANT
WHAT DOES SURFACTANT DO
REDUCE SURFACE TENSION OF ALVEROLAR FLUID
WHAT IS PULMONARY VENTILATION
INSPIRATION AND EXPIRATION
WHAT IS EXTERNAL RESPIRATION
GAS EXCHANGE AT RESPIRATORY MEMBRANE
WHAT IS INTRAPULMONARY PRESSURE
PRESSURE WITHIN THE ALVEOLI
WHAT IS INTRAPLEURAL PRESSURE
PRESSURE WITHIN THE PLEURAL CAVITY
IS THE PRESSURE OF THE PLEURAL CAVITY + or -
ALWAYS NEGATIVE
WHAT DOES THE NEGATIVE INTRAPLEURAL PRESSURE HELP WITH
TO COUPLE LUNG EXPANSION WITH MOVEMENT OF THORACIC CAGE, STICK PLEURA TO THORACIC WALL
WHAT IS THE TRANSPULMONARY PRESSURE
TEH DIFFERENT BETWEEN INTRAPLEURAL AND INTRAPLUMONARY PRESSURE
WHAT DOES 1 CYCLE OF VENTILATION CONSIST OF
1 INHALATION AND 1 EXHALATION
WHAT IS THE PRINCIPAL OF BOYLES LAW
WHEN THE SAME AMOUNT OF GAS IS SHOVED INTO A SMALLER SPACE THE VOLUME DECREASED BUTTHE PRESSURE INCREASES AND VICE VERSA
WHAT MM ARE ACCESSORIES TO RESPIRATION
SCALENES, SCM, PEC MINOR, SERRATUS ANTERIOR
WHAT IS FORCED INSPIRATION
ACCESSORY MM HELPING TO INCREASE THORACIC VOLUME
AIR ALWAYS FLOWS FROM AN AREA OF …. PRESSURE TO … PRESSURE
HIGH TO LOW
WHAT ARE THE PHYSICAL FACTORS INFLUENCING VENTILATION
LUNG COMPLIANCE (ABILITY TO STRETCH)
AIRWAY RESISTANCE (airway diameter)
WHAT DETERMINES AIREAY DIAMETER
AND - BRONCHOCONTRICTING OR BRONCHODILATION OF THE BRONCHIOLES
WHAT HAPPENS WITH AN OBSTRUCTIVE DISEASE
INCREASED RESISTANCE TO AIRFLOW
WHAT ARE EXAMPLES FO AN OBSTRUCTIVE DISEASE
ASTHMA COPD`
WHAT DOES AN OBSTRUCTIVE DISEASE PREDISPOSE YOU TO
HYPERINFLATION
WHAT IS ARESTRIVTIVE DISEASE
DECREASED ABILITY OF TEH LUNGS TO EXPAND
WHAT ARE EXAMNPLES OF A RESTRICTIVE DISEASE
INTRINSIC - PNEUMONIA, PULMONARY FIBROSIS, LUNG CANCER
EXTRINSIC - PLEURAL EFFUSION, OBESITY, SCOLIOSIS, KYPHOSIS, RIB INJURIES, NEUROMM DISEASE
WHAT IS FORCED VITAL CAPACITY
HOW FAST GAS CAN MOVE OUT
WHAT IS FORCED EXPIRATORY VOLUME
AIR EXPELLED DURING SPECIFIC TIME INETRVALS OF TEH ETST
WHAT IS DALTONS LAW
ID YOU WANT TO MEASURE TOTAL PRESSURE OF A MIX OF GASSES IT IS THE SUM OF TEH RPESSRES OF THE INDIVIDUAL COMPONENTS
WHAT IS HENRYS LAW
AT A CONSTANT TEMO EH AMOUNT OF GAS THAT DISSOLVES IN A LIQUID IS DIRECTLY PROPORTIANAL TO THE PARTIAL PRESSURE OF THAT GAS
HOW CAN OXYGEN BE TRANSPORTED
DISSOLVED IN PLASMA
BOUND TO THE HAEM GROUPS
WHAT FACTORS AFFECT 02 SATURATIUON
TEMP, LOCAL PRESENCE OF CO2 and H+, LOCAL AVAILIABILITY OF O2
HAEMOGLOBIN TRANSPORTS WHAT PROPORTION OF CO2
1/4
WHAT IS THE EQN FOR CO2 TRANSPORT
CO2+H2O=CARBONIC ACID (H+ +HCO3-)
WHAT ENZYME FACILITATES THE CARBONIC ACID EQN
CARBONIC ANHYDRASE
WHAT IS RESPONSIBLE FOR TEH REGULATION OF VENTILATION
MEDULLA AND PONS
WHERE ARE PERIPHERAL CHEMORECEPTORS LOCATED
CAROTID BODY AND AORTIC ARCH
