0
What else can I help you with?
What is the prime mover of hand pronation?
Pronator quadratus is the prime mover in pronation of the hand.
What are muscles that work in opposing pairs called?
One is the agonist and the other is called the antagonist. Agonist: muscle which is the main mover, it contracts and shortens Antagonist: muscle that lengthens and controls e.g. flexion at the elbow: the biceps are the agonist and the triceps are the antagonist.
What is the difference between muscle flexing and and muscle extension?
when u flex it, it tightens, when u extend it, it stretches Flexion is when a muscle action decreases the angle at a joint, extension is when the angle increases. A simple example is bicep curl, flexion is when the hand is brought up towards the shoulder, decreasing the angle at the elbow joint. Just because a muscle is performing flexion or extension does not not mean it is contracting or stretching, that is eccentric and concentric movement. A muscle can still be tight when performing extension.
What is the difference in the unmoved mover and the forms?
The unmoved mover refers to Aristotle's concept of a prime mover that initiates all movement in the universe without being moved itself. The forms, on the other hand, refer to Plato's theory of abstract universal principles or ideas that provide the foundation for all physical objects and concepts in the world. While the unmoved mover is a causal principle related to motion, the forms are metaphysical principles related to the nature of reality.
What are the differences between arm flexion and extension in terms of their movements and muscle activation?
Arm flexion involves bending the arm at the elbow joint, bringing the forearm closer to the upper arm. This movement primarily activates the biceps muscle. Arm extension, on the other hand, involves straightening the arm at the elbow joint, moving the forearm away from the upper arm. This movement primarily activates the triceps muscle.
What does the thigh muscle do?
Your thigh is attached to lower side of trunk on one hand and to leg on other. It has strong anterior, posterior and medial muscle compartments. It can have all sort of movement with trunk on one hand and flex-ion and extension with leg on other hand. So it helps very effectively in locomotion of the human being, which does not use the forelimbs for locomotion.
Is the anterior forearm muscle responsible for wrist flexion or wrist extension?
The anterior forearm muscle does not actually exist. Instead, there are a total of eight different muscles with the anterior compartment of the forearm. Their jobs are specifically related to flexion and pronation, or inward rotation of the hand.
What class of lever is a lying tricep extension?
A lying tricep extension is a type of third-class lever exercise. The resistance (weight) is on one end (hand holding the weight), the force is in the middle (elbow joint), and the effort is on the opposite end (tricep muscle).
What is the purpose of your triceps?
The primary function of the biceps muscles is elbow flexion or mowing your arm towards the shoulder. It's secondary function is hand/arm supination, which is the movement of your hand from facing downward to facing upwards. On the other hand, the triceps' primary function is to straighten the arm or extending the elbow. The triceps' muscles also helps in the movement of the arm towards the body or moving your arm from out to inside or towards the mid line of your body which is called adduction. this secondary function is performed together with the muscle Latissimus Dorsi.
What group of muscles have the most muscle spindles?
Muscle of the hand.
What muscle pronates the hand?
Pronator teres
When muscles work in pairs when one contracts what does the other muscle do?
Well it's first important to understand that muscles shorten. So you have a muscle that is longer when its relaxed, but then when you use that muscle it shortens pulling the bone(s) that it is attached to with it. So if you hold out your arm palm side up and then bend your elbow so your hand comes toward your shoulder, your biceps are shortening and causing the movement. Now when you reverse the movement and go back to your arm straight and your palm up, your triceps are shortening. There are many muscles that work this way in the human body. There are prime movers which preform a a function, and antagonists which do perform the opposite of that function. Also, there are synergists muscles which help the prime movers by performing the same movement as them or making sure that you don't perform an undesirable movement. Then there are fixators which are a type of synergists which hold bones still while the prime mover is contracting.
