Keyboard Shortcut | Action |
---|---|
Space | Pause/Play video playback |
Enter | Pause/Play video playback |
m | Mute/Unmute video volume |
Up and Down arrows | Increase and decrease volume by 10% |
Right and Left arrows | Seek forward or backward by 5 seconds |
0-9 | Fast seek to x% of the video. |
f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
c | Press c to toggle captions on or off |
Unhinged!
Adaptations improve an animal's chances for survival by making it better suited to its environmental conditions. Snakes and humans each have adaptations that help them eat. These structures are located in and around the jaws, which are the bones or bony parts that hold the teeth in place and give shape to the mouth.
In this video, you will see how each structure is specialized, or serves a specific purpose. For example, humans are omnivorous, which means they eat both plants and animals. We have several kinds of teeth to help us eat. Snakes are carnivorous, which means they eat only meat or flesh. When a snake eats, certain ligaments (tissue that connects two bones) allow its jaw to swing wide open—or "unhinge." Click on the left to watch the video.
Then write down what the structure of a snake's mouth and jaw can tell you about its diet.