Describe the Major Bones, Muscles, Joints and Joint Actions Used to Perform This Movement Skill and How They Influence the Way the Body Moves. over Arm Throw

Topics: Knee, Human anatomy, Joints Pages: 6 (1933 words) Published: July 15, 2013
1 . Describe the Major bones, muscles,joints and joint actions used to perform this movement skill and how they influence the way the body moves.

The overarm throw is a skill frequently used in a wide range of sports such as cricket,softball and baseball. The action is also used in athletic activities such as javelin, with the overhead serve and smash in tennis, volleyball and badminton and passing a netball and basketball.An overarm throw is the action of the arm swinging backwards then upwards, as the elbow moves close to ear level, leading the throw forward a step is taken with the foot opposite the throwing arm, during the throw, body rotates to face forward and body weight transfers from back to front foot, the elbow then straightens before release, with throwing arm reaching forward and downward in a follow through. There are four mandatory movements involved an overarm throw.These include standing positionPlayer stands with one leg infront of the other,the process of bringing back the ball- player brings back the ball towards their ear slightly rotating the lower part of the body,throwing the ball-player uses maximum strength to throw the ball extending the arm and flexing the back leg and lastly ending in a follow through- back leg ends in a plantar flexion, arm is now inferior to the shoulder.There are many major bones, muscles,joints and joint actions used to perform this skill. Bones range in different shapes and sizes a feature which allows them to perform specialised functions.The main types of bones are long bones which are longer than they are wide and they function as levers, short bones which have a short axis and are found in small spaces and transfer forces and lastly flat bones which consist of a broad surface and serve as places of attachment for muscles also protecting vital organs.Bones provide a steady structure to the body and only move due to muscles pulling them often rapidly through specific positions enabling activities such as the overarm throw. The upper arm, forearm and hand are all included in performing an over arm throw. The major bones involved in the over arm throw are the scapula (large triangular flat bone which allows the arm to attach to the back portion of the skeletal system)

allows the arm to flex which is vital in an over arm throw as it enables the arm to bring back the ball.The humerus (the major long bone in the upper arm joining the shoulder to the elbow) enables the arm to extend, flex and abduct allowing player

to bring the ball back then forward, the radius( long bone found on the thumb side of the forearm) works with the ulna to rotate on the elbow joint allowing the arm to

move back and forwards to throw the ball. The ulna (Long bone of the forearm found

opposite to the radius so on the little finger side) allows extension and flexion of the arm allowing the ball to

be brought back then forwards before releasing it. Carpals,metacarpals and phalanges (all bones of the wrist/fingers carpals are short bones whereas metacarpals and phalanges are long bones they provide structure to the hand ) allow the player to have a firm grip on the ball while pulling back and

before releasing it . All the bones in the arm enable the arm to move in multiple directions to perform an overarm throw.The lower limbs are also a vital component of the body involved in an overarm throw.The lower limb bones working in an overarm throw are the pelvic girdle (comprises of the sacrum,coccyx,Ilium,pubis and ischium which provides the base of support necessary for the weight of the upper body)It is important because it allows the attachment of the

ligaments, are short and strong also adding stability to the body this is important in an over arm throw as it keeps the body stable. The femur (thigh bone- longest and strongest bone in the body) connects to the pelvis socket, which

creates the hip joint. This joint provides the entire body with stability during an overarm throw.The patella...
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