BIO 253 FINAL EXAM QUESTIONS
WITH COMPLETE SOLUTIONS 2025
Upper Respiratory System - ANSWER-Nose
-Larynx
-Pharynx
Lower Respiratory System - ANSWER-Trachea
-Bronchi
-Lungs
Epiglottis - ANSWERStops food from getting into the lungs
Apart of the Larynx
What is the amount of air we breathe in and out during normal respiration? -
ANSWERTidal Volume [TV]
What is the largest respiratory volume? - ANSWERInspiratory reserve volume
What is able to bind to O2 and CO2? - ANSWERHemoglobin
What happens when the CO2 in hemoglobin is high? - ANSWERThe O2 is low
What happens when the CO2 in hemoglobin is low? - ANSWERThe O2 is high
What do you deplete if you smoke? - ANSWERSurfactants
What happens when CO2 is high and you breathe faster? - ANSWERHyperventilation
What Cells secrete mucus? - ANSWERGoblet Cells
What is the function of mucous secreted by goblet cells? - ANSWERPurifies the air we
breathe in
Tonsils found in the mouth - ANSWER-Pharyngeal
-Palintine
-Lingual
What is also known as Adnoids? - ANSWERPharyngeal tonsils
What is the amount of air that always remains in the lungs? - ANSWERResidual volume
, What is the volume of air that we breathe out more after a normal breath? -
ANSWERExpiratory reserve volume
What is the vital capacity of your lungs? - ANSWERRV + IRV + ERV
What is total lung capacity? - ANSWERVC + RV
Where does filtration occur? - ANSWERGlomerular capsule
Where does reabsorption mostly occur? - ANSWERProximal tubule
Where does secretion mostly occur? - ANSWERDistal tubule
What brings blood to the glomerular capsule? - ANSWERAfferent arteriole
What takes blood away from the glomerular capsule? - ANSWEREfferent arteriole
Three main processes that occur in nephron (kidney) - ANSWER1. Reabsorption
2. Filtration
3. Secretion
What is the main source of water loss in the body? - ANSWERUrine production /
excretion
Normal pH of urine - ANSWERAround 6
What is anything that passes through the glomulous? - ANSWERFiltrate
What substance is found in filtrate that is not found in urine due to reabsorption? -
ANSWERGlucose
Which means contains blood vessels? - ANSWERVascular
What is the general function of the kidney? - ANSWER-Filtration
-Urine production
Outer kidney covering that is protective - ANSWERCapsule
What is vascular in the urinary system? - ANSWERGlomerulus
How much water can the kidney filter a day? - ANSWER180 Liters
Which sphincter in urinary bladder is voluntary? - ANSWERExternal sphincter
Which sphincter in urinary bladder is involuntary? - ANSWERInternal sphincter
WITH COMPLETE SOLUTIONS 2025
Upper Respiratory System - ANSWER-Nose
-Larynx
-Pharynx
Lower Respiratory System - ANSWER-Trachea
-Bronchi
-Lungs
Epiglottis - ANSWERStops food from getting into the lungs
Apart of the Larynx
What is the amount of air we breathe in and out during normal respiration? -
ANSWERTidal Volume [TV]
What is the largest respiratory volume? - ANSWERInspiratory reserve volume
What is able to bind to O2 and CO2? - ANSWERHemoglobin
What happens when the CO2 in hemoglobin is high? - ANSWERThe O2 is low
What happens when the CO2 in hemoglobin is low? - ANSWERThe O2 is high
What do you deplete if you smoke? - ANSWERSurfactants
What happens when CO2 is high and you breathe faster? - ANSWERHyperventilation
What Cells secrete mucus? - ANSWERGoblet Cells
What is the function of mucous secreted by goblet cells? - ANSWERPurifies the air we
breathe in
Tonsils found in the mouth - ANSWER-Pharyngeal
-Palintine
-Lingual
What is also known as Adnoids? - ANSWERPharyngeal tonsils
What is the amount of air that always remains in the lungs? - ANSWERResidual volume
, What is the volume of air that we breathe out more after a normal breath? -
ANSWERExpiratory reserve volume
What is the vital capacity of your lungs? - ANSWERRV + IRV + ERV
What is total lung capacity? - ANSWERVC + RV
Where does filtration occur? - ANSWERGlomerular capsule
Where does reabsorption mostly occur? - ANSWERProximal tubule
Where does secretion mostly occur? - ANSWERDistal tubule
What brings blood to the glomerular capsule? - ANSWERAfferent arteriole
What takes blood away from the glomerular capsule? - ANSWEREfferent arteriole
Three main processes that occur in nephron (kidney) - ANSWER1. Reabsorption
2. Filtration
3. Secretion
What is the main source of water loss in the body? - ANSWERUrine production /
excretion
Normal pH of urine - ANSWERAround 6
What is anything that passes through the glomulous? - ANSWERFiltrate
What substance is found in filtrate that is not found in urine due to reabsorption? -
ANSWERGlucose
Which means contains blood vessels? - ANSWERVascular
What is the general function of the kidney? - ANSWER-Filtration
-Urine production
Outer kidney covering that is protective - ANSWERCapsule
What is vascular in the urinary system? - ANSWERGlomerulus
How much water can the kidney filter a day? - ANSWER180 Liters
Which sphincter in urinary bladder is voluntary? - ANSWERExternal sphincter
Which sphincter in urinary bladder is involuntary? - ANSWERInternal sphincter
