I came to this website to know the answers of my questions not answering the question
I would say that the rectus abdominis would be the main muscle associated with trunk flexion, but the external and internal obliques also perform trunk flexion.
The muscles used for knee internal rotation include the popliteus, semitendinosus, semimembranosus, gracilis, sartorius, and semitendinosus muscles. These muscles work together to rotate the knee inwards.
Flexion is a movement that decreases the angle between body parts. Examples in the human body include bending the elbow, bringing the knee towards the chest, and curling the spine forward. These movements help with activities like walking, sitting, and lifting objects.
The type of joint movement used to shut off a light is flexion of the elbow joint. This movement brings the hand closer to the shoulder, allowing the fingers to reach the light switch and flick it off.
There may be two answers to the question you have asked: Sometimes a hinge joint is referred to as a "hinge bone". These are referencing joints in the body that work like hinges, for example, the elbow, knuckle, knee, and toe. Hinge joints are those which can only move in one axis. Or there is a implantable technological device called a "hinged bone plate" that is used in spinal surgery to stabilize two vertebrae to each other as in a "spinal fusion" but which allows for more movement with the ability of flexion of the hinged pieces attached one end to one vertebrae and the other end to the adjacent vertebrae with a hinge in between. See related links for examples and additional details.
The antagonists would be those muscles that cause knee flexion. Hamstrings (biceps femoris, semimembranosus, semitendonosis) are the primary knee flexors, and would thus be antagonists to knee extension.
The prime mover for knee flexion is biceps femoris, semimembranosus, and semitendinosus. The prime mover for knee extension is the Quadriceps â?? vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris
the hamstring is used for flexing the knee
I would say that the rectus abdominis would be the main muscle associated with trunk flexion, but the external and internal obliques also perform trunk flexion.
Quadricep
The muscles used for knee internal rotation include the popliteus, semitendinosus, semimembranosus, gracilis, sartorius, and semitendinosus muscles. These muscles work together to rotate the knee inwards.
At the ankle joint: calf - platarflexion. Anterior tibialis is inovolved in countermovement dorsiflexion. At the knee joint: quadriceps - knee extension Hamstrings are involved in the knee flextion counter movement. At the hip: hamstrings, glutes, spinal errectors - hip flexion. Hip flexors, and abdominals are involved in the initial countrer movement and the "breaking" of the hip flexion. Additional upward thrust is also provided by the shoulders during arm thrust. Hip flexors, and abdominals are involved in the initial countrer movement and the "breaking" of the hip flexion. Big toe is mostly involved in the "toe off" movement. These are the main muscles involved in movement and coutnermovements.
The pectoralis major I believe
Several muscles are used. Biceps brachii for elbow flexion, triceps brachii for elbow extension. Trapezius to raise arm. Deltoid abducts the arm. The pectoralis major allows internal rotation, adduction, and flexion of the arm. The pronator quadratus, pronator teres and supinator all arm forearm muscles that move the wrist. The brachioradialis, brachialis and aconeus are also used.
The Main muscles used when you do elbow curls are the bicep muscles.
The muscles used in the leg press exercise are your Quads primarily. Hamstring gets a good work out too.
The term that means "slanted" or "at an angle" in muscle names is "oblique." This term is commonly used in anatomy to describe muscles that are oriented at an angle to the body's midline, such as the external and internal oblique muscles of the abdomen. These muscles play essential roles in trunk rotation and lateral flexion.