GD FIRST TIMERS CORE 2: Bones 2 (A-F)
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Question 1 of 14
1. Question
An osteon is how long:
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Question 2 of 14
2. Question
Osteons are like logs in that they have rings. The log-like osteons grow side-by-side with each other in bones.
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Question 3 of 14
3. Question
Giant Sequoia trees may have a thousand rings or more, but the maximum amount of rings that an osteon has is about 200.
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Question 4 of 14
4. Question
The tube (C is pointing to one layer of it) that has concentric circles (rings) which are protruding out from the rest of the tubes is:
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Question 5 of 14
5. Question
Osteons are about as wide as a cat’s whisker.
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Question 6 of 14
6. Question
One lamellae layer in bone (a ring) is 7-8 inches wide which is about as wide as a red blood cell.
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Question 7 of 14
7. Question
Lamellae means “thin layer”. A tree ring has what can be called lamellae and so does a gecko’s foot. The dark “lamellae rings” of wood are the winter growth of the wood.
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Question 8 of 14
8. Question
Mushroom “gills” (The straight lines below) are where spores are made. The are also called lamellae.
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Question 9 of 14
9. Question
A mushroom spore has all the mushroom DNA in it to make a new mushroom fungus.
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Question 10 of 14
10. Question
Mushroom gill lamellae (the straight lines above) increase the surface area to make leaves for the fungus.
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Question 11 of 14
11. Question
Fish gill lamellae (secondary) stand up straight. The blood flow in them runs the opposite direction to the water flow coming in through the gills.
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Question 12 of 14
12. Question
A tuna fish can weigh up to 1500 pounds!
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Question 13 of 14
13. Question
What covers the gills to protect them is the skin layer called the popacitum.
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Question 14 of 14
14. Question
A nudibranch sea slug has very unusual gills. They are located in the slime-secreting “foot” that it slides on.
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