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Why do students think bull elk lose their antlers every winter?
- Answer
Antlers demand an enormous amount of energy, and food is scarcer in the winter.
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Look at the photo of the Roosevelt elk above. During what month do students think the photograph was taken?
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It was taken on August 15, 2008. The bull still has his antlers, but they lack all velvet. This indicates a late summer or early autumn time period.
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Osteoclasts are the bone cells largely responsible for the growth and development of antlers. Human beings don't have antlers, but osteoclasts are a very important part of human anatomy. What do students think osteoclasts do in the human body?
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Osteoclasts are very critical for the maintenance and repair of bones.
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- The Roosevelt elk is the largest of the four elk species in North America—adults can measure 3 meters (10 feet) from head to tail and have a shoulder height of 1.5 meters (5 feet).
- Antlers are the fastest-growing bone in any mammal.
- Reindeer are the only species where females regularly grow antlers. They don't use their antlers for sparring, however. Female reindeer use their antlers to clear away snow piled on top of the mosses and lichen that are their main winter food source.
- A rack's points are sometimes called tines.
- The antlers of tropical and equatorial species of deer can last for many years—sometimes, the animal's whole life.
to soak up.
horn-like bony outgrowth on deer and related animals.
tubes through which blood circulates.
structure composing the skeleton of vertebrate animals.
strong, flexible connective tissue found in many animals.
to save or use wisely.
mammal whose male members have antlers.
large species of deer native to North America. Also called American elk and wapiti.
capacity to do work.
very large.
to display or show.
to reproduce or breed.
chemical changes in living cells by which energy is provided for vital processes.
attachment point for antlers in deer.
full set of antlers.
bones of the head, supporting the face and protecting the brain and upper spinal cord.
to engage in a fight or dispute.
to support.
to develop or supply a tissue with blood vessels.
soft, furry covering of growing antlers.
tool to hurt or combat an opponent.
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