Heart Health
What does the word "congenital" mean?
to be born with something
What is the small group of cells that keep your heart beating at a steady rhythm called?
The pacemaker
What does the blood help the body defend against?
diseases and infections
What forms perspiration?
water, salt, and other wastes
Does blood flow at a constant rate or with constant beats?
constant beats
What is the pushing of blood through the blood vessels called?
the pulse
Is the superior vena cava a vein or an artery?
a vein
Where are blood cells made?
in bone marrow
What do the kidneys remove from the body?
What is a cardiologist?
a doctor who specializes in the heart
How many hours of sleep are recommended to keep your heart healthy?
9-11 hours
What is the largest artery in the body?
the aorta
What do platelets help form?
blood clots and scabs
What are nephrons?
tiny filters located in the kidneys
How many chambers are in the hearts of most mammals?
4
What is the average heart rate of a healthy adult?
72 beats per minute
What protects the heart?
the ribs, sternum, and lungs
What is the purpose of the bladder?
to hold urine
How many nephrons are in each kidney?
more than a million
What does EKG stand for?
electocardiograph
Explain what ventricle septal defect is.
a congenital defect where there is an opening in the septum between the right and left ventricles
What does the aorta connect to?
the left ventricle
What is one drop of blood mostly made of?
plasma
Compare respiration to perspiration.
Respiration is breathing and perspiration is sweating.
If you took out all your blood vessels and connected them into one line, how many times could they wrap around the globe?
2.5 times