Florida Science Campus
26 September - 30 September 2022
Lecturer: Dr Wendy Phoswa
Email:
Physiology (II) Practical
Notes - Megan Nel
LC1: Spirometry + Histology
LC2: Endocrinology + Histology
LC3: Excretion + Histology
LC4: Digestion
LC5: Regulation of Body Temperature
LC6: Glucose Tolerance Test
LC7: Blood and Immunity
Additional Comments/ Notes
,Megan Nel
LC1: Spirometry
Lung Capacities:
Term Meaning
TV: Tidal Volume Normal inspiration + expiration: 500mL
IRV: Inspiratory Reserve Volume Forced inspiration past normal inspiration: 31000mL
ERV: Expiratory Reserve Volume Forced expiration past normal expiration: 1200mL
RV: Residual Volume The amount left over after ERV: 1200mL
IC: TVi + IRV Inspiratory capacity
EC: TVe + ERV Expiratory capacity
FRC: ERV + RV Functional Reserve capacity
VC: TV + ERV + IRV Vital Capacity
TLC: TV + ERV + IRV + RV Total Lung Capacity
, Megan Nel
Forced Expiration Vitality Capacity (FEVC) + curve
Purpose: Helps to distinguish between obstructive and restrictive respiratory ailments
FEV: Forced Expiration Value (mL)
FVC: Forced Vital capacity (mL)
Forced: when you forcefully breathe in and out, think of a typical ‘gasp’ moment and how those
people breathe.
FEV1: after 1 second of
exhalation, the efficacy of
breathing can be determined
FEV1/ VC = % normal or
abnormal
Obstructive:
Lower than normal (<80%) as
FEV decreases (dec elasticity,
inc competency)
Restrictive:
Greater than normal (>80%) as FVC decreases (Inc elasticity, dec competency)
26 September - 30 September 2022
Lecturer: Dr Wendy Phoswa
Email:
Physiology (II) Practical
Notes - Megan Nel
LC1: Spirometry + Histology
LC2: Endocrinology + Histology
LC3: Excretion + Histology
LC4: Digestion
LC5: Regulation of Body Temperature
LC6: Glucose Tolerance Test
LC7: Blood and Immunity
Additional Comments/ Notes
,Megan Nel
LC1: Spirometry
Lung Capacities:
Term Meaning
TV: Tidal Volume Normal inspiration + expiration: 500mL
IRV: Inspiratory Reserve Volume Forced inspiration past normal inspiration: 31000mL
ERV: Expiratory Reserve Volume Forced expiration past normal expiration: 1200mL
RV: Residual Volume The amount left over after ERV: 1200mL
IC: TVi + IRV Inspiratory capacity
EC: TVe + ERV Expiratory capacity
FRC: ERV + RV Functional Reserve capacity
VC: TV + ERV + IRV Vital Capacity
TLC: TV + ERV + IRV + RV Total Lung Capacity
, Megan Nel
Forced Expiration Vitality Capacity (FEVC) + curve
Purpose: Helps to distinguish between obstructive and restrictive respiratory ailments
FEV: Forced Expiration Value (mL)
FVC: Forced Vital capacity (mL)
Forced: when you forcefully breathe in and out, think of a typical ‘gasp’ moment and how those
people breathe.
FEV1: after 1 second of
exhalation, the efficacy of
breathing can be determined
FEV1/ VC = % normal or
abnormal
Obstructive:
Lower than normal (<80%) as
FEV decreases (dec elasticity,
inc competency)
Restrictive:
Greater than normal (>80%) as FVC decreases (Inc elasticity, dec competency)
