MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH
LATEST QUESTIONS AND ANSWERS.
inspiration
PB greater than PA
expiration
PA greater than PB
total volume
The amount of air that is exhaled after normal inspiration
ERV (expiratory reserve volume)
Largest additional volume of air that can be forcibly exhaled
IRV (inspiratory reserve volume)
amount of air that can be forcibly inhaled after normal inspiration
RV (residual volume)
Cannot be removed, always in the lungs
Residual volume
cannot be measured by a spirometer
spirometer
Instrument used to measure pulmonary volumes
total lung capacity
vital capacity + residual volume
vital capacity equation
TV + IRV + ERV
Medulla oblongata
where is the respiratory system located
Dorsal and ventral
2 respiratory centers
upper respiratory tract
nose, pharynx, larynx
lower respiratory tract
, trachea, bronchi, lungs
psuedostratified columnar epithelium
tissue in the trachea
simple squamous epithelium
tissue in the alveoli
Goblet cells in respiratory epithelium
Produce sticky mucous that removes bacteria and purifies the air
Vocal cords
determine the pitch of voice
epiglottis
A flap of tissue that seals off the windpipe and prevents food from entering trachea
Surfactant
located in the alveolar sacs, reduces surface tension in the alveoli so they dont collapse during breathing
IRV
The largest pulmonary volume
alveoli
helps to accomplish gas exchange
right lung
contains 3 lobes
left lung
contains 2 lobes
erythroblastosis fetalis
Rh negative mother is carrying an Rh positive baby
Red blood cells
erythrocytes, carry oxygen
White blood cells
leukocytes
Platelets
thrombocytes; cell fragments in the blood that are essential for blood clotting (coagulation)
LATEST QUESTIONS AND ANSWERS.
inspiration
PB greater than PA
expiration
PA greater than PB
total volume
The amount of air that is exhaled after normal inspiration
ERV (expiratory reserve volume)
Largest additional volume of air that can be forcibly exhaled
IRV (inspiratory reserve volume)
amount of air that can be forcibly inhaled after normal inspiration
RV (residual volume)
Cannot be removed, always in the lungs
Residual volume
cannot be measured by a spirometer
spirometer
Instrument used to measure pulmonary volumes
total lung capacity
vital capacity + residual volume
vital capacity equation
TV + IRV + ERV
Medulla oblongata
where is the respiratory system located
Dorsal and ventral
2 respiratory centers
upper respiratory tract
nose, pharynx, larynx
lower respiratory tract
, trachea, bronchi, lungs
psuedostratified columnar epithelium
tissue in the trachea
simple squamous epithelium
tissue in the alveoli
Goblet cells in respiratory epithelium
Produce sticky mucous that removes bacteria and purifies the air
Vocal cords
determine the pitch of voice
epiglottis
A flap of tissue that seals off the windpipe and prevents food from entering trachea
Surfactant
located in the alveolar sacs, reduces surface tension in the alveoli so they dont collapse during breathing
IRV
The largest pulmonary volume
alveoli
helps to accomplish gas exchange
right lung
contains 3 lobes
left lung
contains 2 lobes
erythroblastosis fetalis
Rh negative mother is carrying an Rh positive baby
Red blood cells
erythrocytes, carry oxygen
White blood cells
leukocytes
Platelets
thrombocytes; cell fragments in the blood that are essential for blood clotting (coagulation)
