Our reflective foil insulation stops 97% of radiant heat penetration and loss. Plus, you get a ventilated attic because our soffit and ridge cap are vented, giving you continuous air flow through your attic. You can put as much conventional insulation in your attic as you like.
There are spiral galaxies with numerous, ragged spiral arms in their disks (called ``flocculent'' spirals), so perhaps the self-propagating star formation mechanism is responsible for the flocculent spirals. A ``grand-design''spiral seen face-on. A flocculent spiral with ragged spiral arms.
The pectoralis muscles -- major and minor -- attach your ribs to the front of your upper arm. These muscles lift your arm forward, bring it in toward your body and rotate your shoulder inward. The coracobrachialis is a deep muscle on the front of your upper arm that moves your arm forward.