mcdsparks's channel

Your Grace Still Amazes Me sung by David Sparks with piano and background vocals by Brian Sparks

A venous valve opening and closing in a Pallid Bat

Lymphatic system in the wing of a Pallid Bat

Blood flowing through the capillaries of a Pallid Bat

Here is me singing "I Can Only Imagine" in a talent show. Please remember that this is me at my fattest. I have lost 60 pounds since then.

A branch in the Pallid Bat artery with blood flowing in different directions.