ANATOMY By Georgie Wilson VOLLEYBALL DIG JOINT 1

ANATOMY By Georgie Wilson VOLLEYBALL DIG

JOINT 1 - The Hinge Joint This joint allows it to move like a hinge so it can only create flexion and extension. Flexion This joint is known as a synovial joint. The hinge joint that i am using is my knee. When i bend down (creating flexion) to do a volleyball dig my knee is flexing. When I come back up from squat I create the knee to become extended which also leaves the knee joint to be straight. In my knee the muscles i am using are the Hamstrings and the quadriceps. In the quadriceps we have 4 different muscles Extension called - Vastus Lateralis, Vastus Intermedius, Vastus Medialis and Rectus Femoris. These 4 muscles found in the quadricep is paired with the Hamstring which has 3 types of muscles called - Biceps Femurs, Semitendinosus and Semimembranosus. These muscles all work together.

JOINT 1 - The Hinge Joint The Preparation photo FLEXION The Execution photo EXTENSION Hamstrings agonist Hamstrings antagonist Quadriceps antagonist the quadriceps are the agonist this because when i am in my squat position and my knee has created ist because the knee joint has created extension. The hamstrings have shortened and has contracted

JOINT 1 - The Hinge Joint Femur Patella Tibia Fibula The bones I have used in my knee joint is the Femur, Patella, Tibia and Fibula. The Femur is located in the upper leg area also known as the thigh bone. This bone is the biggest bone in the body. The patella is the bone located in the knee. The Tibia is located in the lower leg area and the Fibula is found behind the Tibia.

JOINT 2 - The Ball and Socket Joint This joint allows it to be able to turn in many different directions. The movements that this joint allows is flexion, extension, abduction, rotation and circumduction. The two joints that are ball and socket joints in our body is our Shoulder and Hip. In a volleyball dig i am using my hip joint. This is because when I bend down the hip joint angle is decreasing so this is called flexion. Then when I come back up from the squat position I have created extension. connects to the upper femur. Then the four quadriceps muscles that are being used ar

This angle is at 45 degrees. This means the angle has decreased and created the anatomical movement called Flexion. This angle is at 180 degrees. This means the angle has increased and created the anatomical movement called Extension. 45 degrees 180 degrees

HIP FLEXION In this position the hip joint has created the anatomical movement Flexion. The agonist in this movement is the hip flexor and the quadriceps. The antagonist to this movement in the hip joint is the Gluteus Maximus and the Hamstrings. HIP EXTENSION In this position the hip joint has created the anatomical movement called Extension. The agonist in this movement is the Hamstrings and the Gluteus Maximus. The antagonist to this movement in the hip joint is the Hip Flexor and the Quadriceps. The agonist muscles are contracting and initiating the starting of the movement and the muscle is shortening. The antagonist is when the muscle lengthens. Gluteus Maximus antagonist Hip flexor agonist Hamstrings antagonist Preparation Quadriceps agonist Gluteus Maximus agonist Hip Flexor antagonist Hamstrings agonist Extension Quadriceps antagonist

PELVIS FEMUR The main bones that are used in my hip when i do a volleyball dig is my pelvis and my femur. These bones are able to hold all the muscles together and connect joints together too.

JOINT 3 - The Gliding Joint The joint allows the bones to glide over one another. But there is small movement in all directions. This is known as one of the least moveable synovial joints. In the skill i am doing (volleyball dig) uses the bones tarsals which is found in my ankle. There is no flexion or extension found in this joint but there is plantar flexion and dorsi flexion. In a volleyball dig I am using Plantar flexion because my foot is flat n also the foot points down when i come back up. Doris flexion is an anatomical movement that allows the foot to point up to the sky. But however it is not found when I do a volleyball dig. The muscles I am using when I use my ankle joint in a volley ball dig is my Gastrocnemius, Soleus and the Tibialis Anterior.

PLANTAR FLEXION In the volleyball dig my feet are flat on the ground this is called Plantar flexion. In the preparation phase my ankle is creating plantar flexion because the joint is facing down wards. Then in the execution the ankle joint is pointed down which is still called Plantar Flexion because the joint has not moved.

Gastrocnemius agonist tibialis antagonist soleus agonist Plantar flexion with foot flat The gastrocnemius is located in the back of my leg which is on the back of the calf. It is located at the top of the calf. The Soleus is located in the middle of the calf. These two muscles are always the agonists when Plantar Flexion is applied to a skill. The agonist is the muscle that shortens and contracts. The Tibialis anterior is the muscle that is located at the front of the lower leg. The name comes from Tibia because the tibia runs in front of the lower leg. Tibialis Anterior is the antagonist in this anatomical movement because it lengthens when the foot is pointed downwards. The antagonist also relaxes. Plantar flexion on my toes, heel off of the ground Gastrocnemius agonist tibialis antagonist soleus agonist Even though the heel of my foot has left the ground the anatomical movement has not changed. Plantar flexion has still been applied to the ankle joint so therefore nothing changes with the agonist and the antagonist.