Human Heart Trivia Questions
What is a human heart?
A: The heart is a muscular organ in humans and
other animals, which pumps blood through the
blood vessels of the circulatory system.
Blood provides the body with oxygen and
nutrients, as well as assists in the removal of
what?
A: Metabolic wastes.
Where is the heart located?
A: Between the lungs, in the middle compartment
of the chest.
In humans, other mammals, and birds, the heart
is divided into how many chambers?
A: Four.
What are the four chambers called?
A: Upper left and right atria; and lower left
and right ventricles.
Commonly the right atrium and ventricle are
referred together as what?
A: The right heart and their left counterparts
as the left heart.
Fish in contrast have how many chambers?
A: Two.
In a healthy heart, the heart valves cause the
blood to do what?
A: Flow in only one direction.
What is the name of the protective sac that the
heart is enclosed in?
A: The pericardium.
The pericardium which also contains a small
amount of what?
A: Fluid.
What are the three layers that make up the wall
of the heart?
A: Epicardium, myocardium, and endocardium.
The heart pumps blood with a rhythm determined
by what?
A: A group of pace making cells in the
sinoatrial node.
The cells generate a current that causes what?
A: Contraction of the heart.
The heart receives blood low in oxygen from
where?
A: The systemic circulation, which enters the
right atrium.
Where does the blood go from the right atrium?
A: To the right ventricle.
From here it is pumped through the lungs where
it does what?
A: Receives oxygen and gives off carbon dioxide.
Oxygenated blood then returns to what?
A: The left atrium, passes through the left
ventricle and is pumped out the systemic
circulation.
The heart beats at a resting rate close to how
many beats per minute?
A: 72.
Cardiovascular diseases (CVD) are the most
common cause of what?
A: Death globally.
As of 2008, heart disease accounted for what
percentage of deaths?
A: 30%.
Of these more than three quarters are a result
of what?
A: Coronary artery disease and stroke.