The heart
How many times a day does your heart beat?
About a 100,000 times a day.
What is the function of arteries?
Arteries, which carry blood that’s rich in oxygen from your heart to your body’s organs and tissues.
how many gallons of blood dose the body hold?
1.2 to 1.5 gallons.
what are capillaries?
Capillaries, which are tiny blood vessels that connect small arteries and small veins.
What is a heart?
An organ that pumps blood through your body.
What is the function of veins?
Veins, which carry blood and waste products back to your heart, and have one-way valves to keep blood flowing up toward your heart.
What is blood?
Blood, fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products.
How many times dose your heart beat in a life time?
The heart beats 2.5 billion times during the life of a 75-year-old.
How big is the average heart?
The average heart is the size of a fist in an adult.
how many veins and arteries do you have in the body?
About 60,000 miles.
What is your blood made of?
plasma,red blood cells,white blood cells.
How many ounces dose your heart expel with one beat?
The heart expels 2 ounces of blood with each beat.
how much dose the average heart weigh?
The human heart weighs less than 1 pound
How many layers do veins have?
3 the tunica adventitia, tunica media, and tunica intima.
What types of blood are there?
A+ A- B+ B- AB+ AB- O+ O-
How many blood vessels do you have?
What causes the sound of your heart beating?
The beating sound your heart makes is caused by the opening and closing of its valves.
when did the first depiction of the blood vessel Apear?
AN EARLY DEPICTION OF VEIN DISEASE APPEARS IN A SCULPTURE FROM 340 BCE.
What type of blood is the universal donor?
O Negative
How many blood cells do we lose each second?
Each second we lose about 3 million red blood cells