How Adrenaline and Acetylcholine Affect Heart Rate
Interactive Video
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Biology, Chemistry, Health Sciences
•
University
•
Hard
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the SA node in the heart?
To store oxygen
To pump blood throughout the body
To generate spontaneous signals for heartbeats
To filter blood
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does adrenaline affect the conductance in pacemaker cells?
It increases conductance for sodium and calcium ions
It decreases conductance for sodium and calcium ions
It decreases conductance for potassium ions
It increases conductance for potassium ions
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the heart rate when adrenaline is released?
The heart rate remains unchanged
The heart rate decreases
The heart stops
The heart rate increases
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What effect does acetylcholine have on potassium conductance?
It increases sodium conductance
It has no effect on potassium conductance
It increases potassium conductance
It decreases potassium conductance
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does acetylcholine affect the depolarization process?
It slows down depolarization
It has no effect on depolarization
It stops depolarization
It speeds up depolarization
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