Human Body - Pushing the Limits

How many bones are in the human skeleton?

• 100

• 300

• 302

• 206

Can our bones bend?

• Yes

• No

How often do our bodies replace every bone cell?

• every 7 years

• every 5 years

• every year

• every 10 years

Are we born with every muscle fiber we will ever know?

• Yes

• no

How much of our muscle fibers do we normally use at any given time?

• 1/3

• 1/5

• 1/2

• 1/6

What is the measure of running stress?

• 1 time our body weight

• 5 times our body weight

• 7 times our body weight

• 3 times our body weight

What is the measure of jumping stress?

• 0 times our body weight

• 10 times our body weight

• 5 times our body weight

• 3 times our body weight

What is the energy stored in our muscles used for dangerous situations?

• ATP

• ADP

• Photosynthesis

• none of the above

How many hours of stored energy does the average person have?

• 2-3

• 5-10

• 15-20

• 1-2

What do fat cells do?

• Shrink or swell

• Disappear

• only shrink