Ligaments are strong, flexible bands (or cords) of dense regular fibrous connective tissue that hold bones firmly together at the joints, but are elastic enough to allow some movement. They help to stabilise joints and support organs, muscles, or other body parts. They prevent extensive movement or movement in the wrong direction. For instance, the ATF ligament (the most commonly sprained ligament in your ankle) that prevents your tibia and talus from separating when you roll your ankle in, or your transverse ligament in your cervical spine that prevents your neck from going too far forward and damaging your spinal cord (and killing you).
The person eating it, typically.
It prevents food from going to the respiratory system
It prevents the blood already in the aorta from going back into the heart.
I am going to guess that you don't live in north America A femur is a portion of a human leg and as this is in automotive section you are describing an automotive part. Please include make model year and what the manufacturer calls the part in your re-post of the question.
Prevents your head from going thru the windshield (ouch). Also prevents you from being thrown out of the car during an accident.
The Pokémon that are going on the front of SoulSilver is Lugia and on the front of HeartGold is Ho-Oh.
it prevents bacteria from going in your wounds if your body defence system has fallen!
usually a bad switch or something stuck in the track
The dust prevents most of the sunlight from going through.Source: Experience
They will get hanged
a 1 way valve in the heart that prevents blood from going backwards when the heart contracts