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BIOMEDICAL SCIENCE FOR OSTEO 7 > LUNG PHYSIOLOGY > Flashcards

LUNG PHYSIOLOGY Flashcards

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1
Q

WHAT DOES THE RESPIRATORY MEMBRANE CONSIST OF

A

AN ENDOTHELIAN CELL AND T1 ALVEOLAR CELL (SQUAMOUS EPI)

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2
Q

WHAT IS A TYPE 1 ALVEOLAR CELL

A

SQUAMOUS EPITHELIUM

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3
Q

WHAT IS A TYPE 2 ALVEOLAR CELL

A

CUBOIDAL EPITHELIUM

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4
Q

WHAT DOES A TYPE 2 ALVEOLAR CELL SECRETE

A

SURFACTANT

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5
Q

WHAT DOES SURFACTANT DO

A

REDUCE SURFACE TENSION OF ALVEROLAR FLUID

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6
Q

WHAT IS PULMONARY VENTILATION

A

INSPIRATION AND EXPIRATION

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7
Q

WHAT IS EXTERNAL RESPIRATION

A

GAS EXCHANGE AT RESPIRATORY MEMBRANE

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8
Q

WHAT IS INTRAPULMONARY PRESSURE

A

PRESSURE WITHIN THE ALVEOLI

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9
Q

WHAT IS INTRAPLEURAL PRESSURE

A

PRESSURE WITHIN THE PLEURAL CAVITY

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10
Q

IS THE PRESSURE OF THE PLEURAL CAVITY + or -

A

ALWAYS NEGATIVE

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11
Q

WHAT DOES THE NEGATIVE INTRAPLEURAL PRESSURE HELP WITH

A

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

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12
Q

WHAT IS THE TRANSPULMONARY PRESSURE

A

TEH DIFFERENT BETWEEN INTRAPLEURAL AND INTRAPLUMONARY PRESSURE

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13
Q

WHAT DOES 1 CYCLE OF VENTILATION CONSIST OF

A

1 INHALATION AND 1 EXHALATION

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14
Q

WHAT IS THE PRINCIPAL OF BOYLES LAW

A

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

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15
Q

WHAT MM ARE ACCESSORIES TO RESPIRATION

A

SCALENES, SCM, PEC MINOR, SERRATUS ANTERIOR

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16
Q

WHAT IS FORCED INSPIRATION

A

ACCESSORY MM HELPING TO INCREASE THORACIC VOLUME

17
Q

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

A

HIGH TO LOW

18
Q

WHAT ARE THE PHYSICAL FACTORS INFLUENCING VENTILATION

A

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

19
Q

WHAT DETERMINES AIREAY DIAMETER

A

AND - BRONCHOCONTRICTING OR BRONCHODILATION OF THE BRONCHIOLES

20
Q

WHAT HAPPENS WITH AN OBSTRUCTIVE DISEASE

A

INCREASED RESISTANCE TO AIRFLOW

21
Q

WHAT ARE EXAMPLES FO AN OBSTRUCTIVE DISEASE

A

ASTHMA COPD`

22
Q

WHAT DOES AN OBSTRUCTIVE DISEASE PREDISPOSE YOU TO

A

HYPERINFLATION

23
Q

WHAT IS ARESTRIVTIVE DISEASE

A

DECREASED ABILITY OF TEH LUNGS TO EXPAND

24
Q

WHAT ARE EXAMNPLES OF A RESTRICTIVE DISEASE

A

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

25
Q

WHAT IS FORCED VITAL CAPACITY

A

HOW FAST GAS CAN MOVE OUT

26
Q

WHAT IS FORCED EXPIRATORY VOLUME

A

AIR EXPELLED DURING SPECIFIC TIME INETRVALS OF TEH ETST

27
Q

WHAT IS DALTONS LAW

A

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

28
Q

WHAT IS HENRYS LAW

A

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

29
Q

HOW CAN OXYGEN BE TRANSPORTED

A

DISSOLVED IN PLASMA
BOUND TO THE HAEM GROUPS

30
Q

WHAT FACTORS AFFECT 02 SATURATIUON

A

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

31
Q

HAEMOGLOBIN TRANSPORTS WHAT PROPORTION OF CO2

A

1/4

32
Q

WHAT IS THE EQN FOR CO2 TRANSPORT

A

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

33
Q

WHAT ENZYME FACILITATES THE CARBONIC ACID EQN

A

CARBONIC ANHYDRASE

34
Q

WHAT IS RESPONSIBLE FOR TEH REGULATION OF VENTILATION

A

MEDULLA AND PONS

35
Q

WHERE ARE PERIPHERAL CHEMORECEPTORS LOCATED

A

CAROTID BODY AND AORTIC ARCH

BIOMEDICAL SCIENCE FOR OSTEO 7 (14 decks)

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