CORE 1 GD Second Timers: Bones 1 (E-H)

The skeleton below with the large keel in the sternum area of the chest is from:

These wide, flat “boxes” are solar panels for the Apollo Moon Lander.

One of the blue-throated hummingbird’s migrations includes an astonishing 500-mile trek across the Gulf of Mexico. Its bones and the fat on its body are precisely weighed to the hundredth of a gram.

A real problem with being in Space for any extended period of time is that your bones begin to diminish in width and mass because of the lack of stress on them. Because of this, astronauts visiting the ISS exercise almost every day. (Different bears don’t have this problem. They can hibernate for 5 months at a time and not lose any bone density at all. )

We have 7 neck vertebrae. Giraffes have long necks but surprisingly only have twice as many thoracic vertebrae as we do.

These bones with spinous processes on the back side are the cervical vertebrae of the neck. (You cannot see the spinous processes in this illustration.)