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Questions and Answers
What percentage of body weight is the volume of blood in a human body?
What percentage of body weight is the volume of blood in a human body?
How many named skeletal muscles are there in the human body?
How many named skeletal muscles are there in the human body?
What is the function of the nervous system?
What is the function of the nervous system?
What happens to the bones in the human body from birth to adulthood?
What happens to the bones in the human body from birth to adulthood?
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What is the approximate length of blood vessels if they were laid out in a line?
What is the approximate length of blood vessels if they were laid out in a line?
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What is the function of the skeletal system?
What is the function of the skeletal system?
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What is the approximate number of cells in the human body?
What is the approximate number of cells in the human body?
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What is the function of the renal system and urinary system?
What is the function of the renal system and urinary system?
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Study Notes
Muscular System
- Enables the body to move using muscles
Nervous System
- Collects and processes information from the senses via nerves and the brain
- Tells the muscles to contract to cause physical actions
Renal and Urinary System
- Filters blood to produce urine and remove waste through the kidneys
Reproductive System
- Consists of organs required for the production of offspring
Respiratory System
- Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide
Skeletal System
- Maintains the structure of the body and its organs
- Consists of around 270 bones at birth, decreasing to 206 bones by adulthood
- Bone mass reaches maximum density around age 21
Interesting Facts
- The human body contains approximately 37.2 trillion cells
- There are over 650 named skeletal muscles in the human body, possibly up to 840
- The network of blood vessels is over 60,000 miles in length
- The volume of blood in a human body is approximately 7% of body weight
- An average adult body contains approximately 4.7 to 5.5 liters (1.2 to 1.5 gallons) of blood
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Description
This quiz covers the different systems of the human body, including muscular, nervous, renal, urinary, reproductive, and respiratory systems. It explains the functions and roles of each system.
