11.04 - Heart Part 2: Crash Course
Authored by Gary [HHS]
Biology
11th Grade
NGSS covered
Used 28+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of CPR during cardiac arrest?
To provide electrical stimulation to the heart
To circulate oxygenated blood until help arrives
To correct fibrillation
To restart the heart immediately
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do defibrillators do to the heart?
Provide oxygen to the heart cells
Stop the heart to reset its rhythm
Increase the heart rate
Stimulate the heart to beat faster
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of a cardiac cell is made up of mitochondria?
40 to 50 percent
25 to 35 percent
5 to 10 percent
10 to 15 percent
Tags
NGSS.HS-LS1-7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of pacemaker cells in the heart?
To absorb excess sodium ions
To filter blood before it is pumped
To generate their own electrical impulses
To pump blood throughout the body
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are cardiac cells different from skeletal muscle cells?
Cardiac cells have multiple nuclei
Cardiac cells do not use sliding filaments to contract
Cardiac cells are interconnected and branched
Cardiac cells are not striated
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What triggers the action potentials in pacemaker cells?
Neighboring cell activity
Direct electrical shocks
Leaky sodium and potassium channels
External stimuli
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where are the pacemaker cells that control the heart rate located?
In the Purkinje fibers
In the left ventricle
In the atrioventricular node
In the sinoatrial node
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