Hi, welcome back at anatomy basics section two, lecture three. I have left you at the end of lecture two, where we ended with talking about muscles and how they function. In this last lecture section two, I will show you how the movement in your limbs are called in order to be able to explain in the next sections which muscles are used in the various movements. We will start with movements of the upper extremity and after that the movements of the lower extremity. Once you get the hang of it, you will notice that many words are used for similar motions of different joints and you will easily get to grips with the terminology When a person is standing upright with the palms of the hands forward, it's called the anatomical position. Show the movements are possible in all directions due to the joints form.
And here you see the names of the movements in basic directions and deflection, moving the forward and up retro flexion or extension, moving the arm backwards abduction sideways moving up and away from the trunk abduction the return from maximal abduction towards the trunk extra Output rotation and internal or inward rotation. In the elbow you can find four movements flexion where your hand and almost against your shoulder and extension where you end in a fully stretched arm. Besides those two we can see supination when, with a 90 degrees flexed arm you turn your pump up and pronation when you turn your palm downwards. The wrist can make several movements. We call them dorsiflexion. Bending towards the back of the hand and pharma flexion bending towards the palm of the hand.
Then we have radial abduction, bending sideways to the side of the sun and owner abduction bending sideways to the side of the pink. hands and fingers can make many motions and they are shown here. Digital flexion that is making a fist digital extension or stretching the fingers abduction or spreading abduction or closing the sun is very mobile it can abduct, abduct, flex and extend the very important opposition that enables grabbing The Pinkie can make the same opposition and in that motion it will meet the thumb in the middle. The movements of the hip are called flexion, where you move your knee upwards extension where the femur is moving backwards and there is abduction, abduction, external rotation and internal rotation. As I said before, you will find similarities in the denomination The knee there is flexion and extension. When the media is flexed, it can externally rotate and internally rotate.
The movements in the ankle are called dorsiflexion. Moving the foot up, plantar flexion like making a ballet foot. e-version or pronation that is turning your soul outward and inversion or supination that is Turning your soul inward. Thank you for watching this video, and I hope to meet you soon in the next session where we will start with learning about the muscles of the shoulder.