BCP 201 GD: Bones 5 I-L (First Timers)

House roof trusses use chewing gum to hold them together.

The keel of a bird is in the center of its foot. The flight muscles of the wings grow into it.

Which has the smaller keel in relation to its body size?

Steamboats have large keels because it helps them negotiate tight turns.

We have a flat sternum.

Your pectoral muscles are connected to your sternum.

“Bone Cliffs” provide more surface area for muscle to attach.

The clavicle’s “bone cliff” of our shoulder blade gives the shoulder muscle greater surface area to attach to.

The pectoral muscle attaches to the clavicle in a wide band.

The supracoracoideus pulls the bird foot up with an interesting pulley system.

The pectoralis muscle (pec muscle) attaches to the keel. It pulls the wing down with a powerful stroke.

Flying birds have a sternum that is nearly equal in width and height. Ostriches don’t have a keeled sternum.