Heart Of The Matter
What are the 4 sections of the heart called?
the chambers.
What do the valves essentially act as?
doors to allow blood through.
Roughly what percentage of your blood is in your veins?
75%.
What do capillaries help connect together?
arteries and veins.
What are the 4 parts of your blood?
red blood cells, white blood cells, platelets, and plasma.
What 2 body systems does the heart mainly work with?
the nervous system and endocrine system.
Which particular valves open between the upper and lower chambers of the heart?
the atrioventricular valves.
What are 3 ways to improve vein health?
exercise, eating healthy and maintaining a healthy weight.
Where do the capillaries exchange elements?
blood and tissues.
Where are most blood cells made?
the bone marrow.
What are the 3 walls of the heart?
the endocardium, myocardium, and epicardium layers.
Which valves open when blood flows out of your ventricles?
the semilunar valves.
How many layers do veins have?
3 layers.
What are capillaries' walls made up of?
endothelium.
What is the main function of blood?
to carry oxygen from the lungs to the body tissues.
What flat bone protects your heart?
the rib cage.
What happens when a valve does not close well and becomes leaky and allows blood to flow in the wrong direction?
regurgitation.
About how many gallons of blood do the veins circulate daily?
2,000 gallons.
What are the 3 types of capillaries?
continuous, fenestrated, sinusoid capillaries.
What are 2 things blood does additional to carrying oxygen?
Fighting infection and carrying hormones.
What is a medical device commly used to treat the heart?
a pacemaker.
What happens when a valve does not open wide enough, blocking the blood flow?
stenosis.
What causes veins to apper blue with light colored skin?
an illusion to do with light
What happens when capillaries don't function properly?
many life threatening syndomes and illnesses.
What may someone have to undergo if they have low numbers of blood cells?
Transfusion