LUNG PHYSIOLOGY

Question 1

WHAT DOES THE RESPIRATORY MEMBRANE CONSIST OF

Answer 1

AN ENDOTHELIAN CELL AND T1 ALVEOLAR CELL (SQUAMOUS EPI)

Question 2

WHAT IS A TYPE 1 ALVEOLAR CELL

Answer 2

SQUAMOUS EPITHELIUM

Question 3

WHAT IS A TYPE 2 ALVEOLAR CELL

Answer 3

CUBOIDAL EPITHELIUM

Question 4

WHAT DOES A TYPE 2 ALVEOLAR CELL SECRETE

Answer 4

SURFACTANT

Question 5

WHAT DOES SURFACTANT DO

Answer 5

REDUCE SURFACE TENSION OF ALVEROLAR FLUID

Question 6

WHAT IS PULMONARY VENTILATION

Answer 6

INSPIRATION AND EXPIRATION

Question 7

WHAT IS EXTERNAL RESPIRATION

Answer 7

GAS EXCHANGE AT RESPIRATORY MEMBRANE

Question 8

WHAT IS INTRAPULMONARY PRESSURE

Answer 8

PRESSURE WITHIN THE ALVEOLI

Question 9

WHAT IS INTRAPLEURAL PRESSURE

Answer 9

PRESSURE WITHIN THE PLEURAL CAVITY

Question 10

IS THE PRESSURE OF THE PLEURAL CAVITY + or -

Answer 10

ALWAYS NEGATIVE

Question 11

WHAT DOES THE NEGATIVE INTRAPLEURAL PRESSURE HELP WITH

Answer 11

TO COUPLE LUNG EXPANSION WITH MOVEMENT OF THORACIC CAGE, STICK PLEURA TO THORACIC WALL

Question 12

WHAT IS THE TRANSPULMONARY PRESSURE

Answer 12

TEH DIFFERENT BETWEEN INTRAPLEURAL AND INTRAPLUMONARY PRESSURE

Question 13

WHAT DOES 1 CYCLE OF VENTILATION CONSIST OF

Answer 13

1 INHALATION AND 1 EXHALATION

Question 14

WHAT IS THE PRINCIPAL OF BOYLES LAW

Answer 14

WHEN THE SAME AMOUNT OF GAS IS SHOVED INTO A SMALLER SPACE THE VOLUME DECREASED BUTTHE PRESSURE INCREASES AND VICE VERSA

Question 15

WHAT MM ARE ACCESSORIES TO RESPIRATION

Answer 15

SCALENES, SCM, PEC MINOR, SERRATUS ANTERIOR

Question 16

WHAT IS FORCED INSPIRATION

Answer 16

ACCESSORY MM HELPING TO INCREASE THORACIC VOLUME

Question 17

AIR ALWAYS FLOWS FROM AN AREA OF …. PRESSURE TO … PRESSURE

Answer 17

HIGH TO LOW

Question 18

WHAT ARE THE PHYSICAL FACTORS INFLUENCING VENTILATION

Answer 18

LUNG COMPLIANCE (ABILITY TO STRETCH)
AIRWAY RESISTANCE (airway diameter)

Question 19

WHAT DETERMINES AIREAY DIAMETER

Answer 19

AND - BRONCHOCONTRICTING OR BRONCHODILATION OF THE BRONCHIOLES

Question 20

WHAT HAPPENS WITH AN OBSTRUCTIVE DISEASE

Answer 20

INCREASED RESISTANCE TO AIRFLOW

Question 21

WHAT ARE EXAMPLES FO AN OBSTRUCTIVE DISEASE

Answer 21

ASTHMA COPD`

Question 22

WHAT DOES AN OBSTRUCTIVE DISEASE PREDISPOSE YOU TO

Answer 22

HYPERINFLATION

Question 23

WHAT IS ARESTRIVTIVE DISEASE

Answer 23

DECREASED ABILITY OF TEH LUNGS TO EXPAND

Question 24

WHAT ARE EXAMNPLES OF A RESTRICTIVE DISEASE

Answer 24

INTRINSIC - PNEUMONIA, PULMONARY FIBROSIS, LUNG CANCER
EXTRINSIC - PLEURAL EFFUSION, OBESITY, SCOLIOSIS, KYPHOSIS, RIB INJURIES, NEUROMM DISEASE

Question 25

WHAT IS FORCED VITAL CAPACITY

Answer 25

HOW FAST GAS CAN MOVE OUT

Question 26

WHAT IS FORCED EXPIRATORY VOLUME

Answer 26

AIR EXPELLED DURING SPECIFIC TIME INETRVALS OF TEH ETST

Question 27

WHAT IS DALTONS LAW

Answer 27

ID YOU WANT TO MEASURE TOTAL PRESSURE OF A MIX OF GASSES IT IS THE SUM OF TEH RPESSRES OF THE INDIVIDUAL COMPONENTS

Question 28

WHAT IS HENRYS LAW

Answer 28

AT A CONSTANT TEMO EH AMOUNT OF GAS THAT DISSOLVES IN A LIQUID IS DIRECTLY PROPORTIANAL TO THE PARTIAL PRESSURE OF THAT GAS

Question 29

HOW CAN OXYGEN BE TRANSPORTED

Answer 29

DISSOLVED IN PLASMA
BOUND TO THE HAEM GROUPS

Question 30

WHAT FACTORS AFFECT 02 SATURATIUON

Answer 30

TEMP, LOCAL PRESENCE OF CO2 and H+, LOCAL AVAILIABILITY OF O2

Question 31

HAEMOGLOBIN TRANSPORTS WHAT PROPORTION OF CO2

Answer 31

1/4

Question 32

WHAT IS THE EQN FOR CO2 TRANSPORT

Answer 32

CO2+H2O=CARBONIC ACID (H+ +HCO3-)

Question 33

WHAT ENZYME FACILITATES THE CARBONIC ACID EQN

Answer 33

CARBONIC ANHYDRASE

Question 34

WHAT IS RESPONSIBLE FOR TEH REGULATION OF VENTILATION

Answer 34

MEDULLA AND PONS

Question 35

WHERE ARE PERIPHERAL CHEMORECEPTORS LOCATED

Answer 35

CAROTID BODY AND AORTIC ARCH