Please help veterinary science!
What is bovine spongiform encephalopathy? Why is there concern about this disease? at least 3 sentences

It's a progressive neurological disorder of cattle that results in infection by an unusual transmissible agent. There are concerns about this disease are trouble walking. Most cattle are hindered by this disease and can even lose weight because of it. Later in the disease the cow normally becomes unable to move at all.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.