What muscle allows you to pull down on an object? Different fibers of the muscle are responsible for different actions, including raising the arm and assisting the pectoralis muscle in the chest. One important function of the deltoid is preventing joint dislocation when a person carries heavy objects. What links a muscle to a bone? A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.
What is a neutralizer muscle? Neutralizer Muscle Neutralizers, like fixators, act to prevent unwanted movement. But instead of acting to prevent the unwanted movement of a body part they act to pull against and cancel out an unwanted line of pull from the agonist or prime mover.
What is the difference between flexors and extensors? Flexors are muscles involved in flexing a muscle, like the biceps. These muscles extend two muscles further, e. What are antagonistic muscles give examples? An antagonistic is a muscle that opposes the action of the other muscle.
This is called antagonistic muscle action. The working muscle is called the prime mover or agonist. The relaxing muscle is the antagonist. The other main pair of muscle that work together are the quadriceps and hamstrings.
The prime mover is helped by other muscles called synergists. These contract at the same time as the prime mover. They hold the body in position so that the prime mover can work smoothly.
When muscles cause a limb to move through the joint's range of motion, they usually act in the following cooperating groups:. These muscles cause the movement to occur. They create the normal range of movement in a joint by contracting. They move our bones and associated body parts by pulling on them — this process is called muscle contraction. One muscle of the pair contracts to move the body part, the other muscle in the pair then contracts to return the body part back to the original position.
Muscles that work like this are called antagonistic pairs. In an antagonistic muscle pair as one muscle contracts the other muscle relaxes or lengthens. The muscle that is contracting is called the agonist and the muscle that is relaxing or lengthening is called the antagonist. For example, when you perform a bicep curl, the biceps will be the agonist as it contracts to produce the movement, while the triceps will be the antagonist as it relaxes to allow the movement to occur.
Jun 22, Image from SMARTNotebook lecture by smarterteacher For every muscle set there is an agonist working in opposition with an antagonist, flexors to extensors, supinators to pronators, adductors to abductors.
Related questions How do I determine the molecular shape of a molecule? What is the lewis structure for co2? What is the lewis structure for hcn?
0コメント