Science Medicine Cardiology
IB SEHS TOPIC 2 PRACTICE EXAM/ACTUAL
EXAM QUESTIONS AND WELL DETAILED
ANSWERS/GRADE A+ ASSURED
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CCDS exam review APEA 3P EXAM BANK 2025 | ACCU... BKAT 9R
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What is the primary function of b) exchange oxygen and carbon dioxide
the pulmonary system?
a) Pump blood to the body
b) Exchange oxygen and carbon
dioxide
c) Digest nutrients
d) Maintain pH balance
what structure prevents food b) epiglottis
from entering the trachea?
a) Larynx
b) Epiglottis
c) Bronchus
d) Pharynx
See an expert-written answer!
Where does gas exchange b) alveoli
occur in the lungs?
a) Bronchi
b) Alveoli
c) Trachea
d) Diaphragm
Which of the following b) Active, diaphragm contracts
describes inhalation at rest?
a) Passive, diaphragm relaxes
b) Active, diaphragm contracts
c) Passive, intercostals contract
d) Active, diaphragm relaxes
, The volume of air breathed in b) tidal volume
and out in one breath is known
as:
a) Residual volume
b) Tidal volume
c) Vital capacity
d) Total lung capacity
Which muscle assists with forced b) internal intercostals
exhalation?
a) Diaphragm
b) Internal intercostals
c) External intercostals
d) Sternocleidomastoid
What is the average resting c) 60-100 bpm
heart rate for a healthy adult?
a) 30-50 bpm
b) 50-60 bpm
c) 60-100 bpm
d) 100-120 bpm
Which part of the heart receives c) left atrium
oxygenated blood from the
lungs?
a) Right atrium
b) Right ventricle
c) Left atrium
d) Left ventricle
See an expert-written answer!
The correct sequence of the a) SA node --> AV node --> Bundle of His --> Purkinje fibers
cardiac conduction system is:
a) SA node → AV node →
Bundle of His → Purkinje fibers
b) AV node → SA node →
Bundle of His → Purkinje fibers
c) SA node → Bundle of His →
AV node → Purkinje fibers
d) AV node → Purkinje fibers →
SA node → Bundle of His
What happens to stroke volume c) increases
during exercise?
a) Decreases
b) Stays the same
c) Increases
d) Fluctuates randomly
What is cardiac output? b) heart rate * stroke volume
a) Heart rate × blood pressure
b) Heart rate × stroke volume
c) Stroke volume ÷ blood
volume
d) Heart rate × tidal volume
IB SEHS TOPIC 2 PRACTICE EXAM/ACTUAL
EXAM QUESTIONS AND WELL DETAILED
ANSWERS/GRADE A+ ASSURED
Save
Students also studied
Flashcard sets Study guides
CCDS exam review APEA 3P EXAM BANK 2025 | ACCU... BKAT 9R
46 terms Teacher 89 terms Teacher 85 terms
Preview prof-C-1 Preview kamauluciey1
What is the primary function of b) exchange oxygen and carbon dioxide
the pulmonary system?
a) Pump blood to the body
b) Exchange oxygen and carbon
dioxide
c) Digest nutrients
d) Maintain pH balance
what structure prevents food b) epiglottis
from entering the trachea?
a) Larynx
b) Epiglottis
c) Bronchus
d) Pharynx
See an expert-written answer!
Where does gas exchange b) alveoli
occur in the lungs?
a) Bronchi
b) Alveoli
c) Trachea
d) Diaphragm
Which of the following b) Active, diaphragm contracts
describes inhalation at rest?
a) Passive, diaphragm relaxes
b) Active, diaphragm contracts
c) Passive, intercostals contract
d) Active, diaphragm relaxes
, The volume of air breathed in b) tidal volume
and out in one breath is known
as:
a) Residual volume
b) Tidal volume
c) Vital capacity
d) Total lung capacity
Which muscle assists with forced b) internal intercostals
exhalation?
a) Diaphragm
b) Internal intercostals
c) External intercostals
d) Sternocleidomastoid
What is the average resting c) 60-100 bpm
heart rate for a healthy adult?
a) 30-50 bpm
b) 50-60 bpm
c) 60-100 bpm
d) 100-120 bpm
Which part of the heart receives c) left atrium
oxygenated blood from the
lungs?
a) Right atrium
b) Right ventricle
c) Left atrium
d) Left ventricle
See an expert-written answer!
The correct sequence of the a) SA node --> AV node --> Bundle of His --> Purkinje fibers
cardiac conduction system is:
a) SA node → AV node →
Bundle of His → Purkinje fibers
b) AV node → SA node →
Bundle of His → Purkinje fibers
c) SA node → Bundle of His →
AV node → Purkinje fibers
d) AV node → Purkinje fibers →
SA node → Bundle of His
What happens to stroke volume c) increases
during exercise?
a) Decreases
b) Stays the same
c) Increases
d) Fluctuates randomly
What is cardiac output? b) heart rate * stroke volume
a) Heart rate × blood pressure
b) Heart rate × stroke volume
c) Stroke volume ÷ blood
volume
d) Heart rate × tidal volume
