Extension.
Extension increases an angle, as in straightening a joint. During extension, the knee or elbow are straightened.
Flexion at the knee joint bends the knee. The semi-tendinosis, semi-membranous and biceps femoris muscles (hamstrings) flex the knee and extend the thigh.
Diffusion
The ray of light bends towards the normal.
it the rocks
Diffusion.
osmosis is the passive movement of a substance from a place where its concentration is higher, to another where its concentration is lower. This applies to gases, I guess
flexion
flexion
flexion
flexion of the knee.
The inferior vena cava brings blood from the lower parts of the body to the heart. The blood is deoxygenated.
there is a panel with this lower than your track (z to turn around)
water pump
It is meningitis. Go to the doctor or hospital emeditly.
It is a large bend , or part of a series of bends, in the lower course of a large river.
mechanical movement is nothing but movement of mechanical branch from lower position to the lowest position...
The movement of gas through a small hole into an area of lower pressure is diffusion.
You have it backward I believe. When serotonin is lower, people have more risk to experience depression.