How many bones are in the human hand?ย A. 18ย B.ย 12ย C.ย 29ย D.ย 7
There are around 29 major bones in the human hand. That number is not universal. Some people actually have more or less bones than others.
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15
How many muscles control the thumb?ย A. 2ย B.ย 9ย C.ย 3ย D.ย 10
9 muscles and three nerves control the thumb
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15
How many nerve endings are in the hands.ย A. 3,500ย B.ย 17,000ย C. 90ย ย D.ย 8,000
The palm of the human hand has over 17,000 touch receptors and free nerve endings.
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15
How many muscles and joints does the human hand have?ย A. 29 joints/34 musclesย ย B.ย 15 joints/12 musclesย ย C.ย 6 joints/8 muscles.
There are 29 joints & 34 muscles in each hand. Also, there are at least 123 ligaments ( connective tissue that holds joints together), 48 nerves & 30 arteries.
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15
What does ambidextrous mean and about what percentage of humans are ambidextrous?
Ambidextrous means being able to use both hands equally well. Only about 1% (1 in 100 people) is ambidextrous.
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15
What part of the hand allows us (and some primates) to grip things?
Our thumb!
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What are fingernails made of? A. Ivoryย ย B. Skinย ย C. Keratinย ย D. Fat cells
Nails are made of keratin, the same substance your body uses to create hair and the top layer of your skin. You had fingernails before you were born.
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Which order of animals has hands?ย A. Primatesย ย B.ย Marsupialsย ย C.ย Rodents
Primates. The 300 primate species include humans, apes, monkeys, & prosimians (lemurs, lorises and tarsiers)
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15
What percentage of the population is left-handed?
Only 10-15% of the entire human population is left handed.
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What percentage of bones in the human body are contained in the hand?
About 25%
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How many muscles are there in each finger?ย A.ย 5ย ย B.ย 8ย ย C.ย 0ย ย D. 12
There are NO muscles in the fingers. The muscles that bend the fingers are located in the palm of the hand & the forearm & are connected to fingers by tendons
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15
When and where do fingernails grow the fastest?
Nails tend to grow at a faster rate during the summertime, and they typically grow faster on a personโs dominant hand.