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Without joints, we would be immobile.
Brant Lockman
Wiki User
∙ 14y agoThe arm starts at the shoulder (glenohurmeral) joint. The main muscles of the upper arm are the triceps brachii, biceps brachii and brachialis. Then we come to the elbow. The muscles of the forearm are too numerous for me to list here suffice to say that they fall into two broad categories: pronators/supinators and flexors/extensors. Likewise with the wrist, hand, and fingers, too many bones and muscles to list independently.
Wiki User
∙ 13y agobecause joints are needed to connect bones together for movement.
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What are the muscles called that cross two joints and act on both joints?
biarticulate or biaxial muscles
How does the body connect each arm to the upper body?
The joints connects the arm to the upper body.
How many muscles in the arm?
4
What is the name of a muscle that crosses two joints?
rectus femoris
How many muscles are in a human arm?
20
What bones and joints are used to swing a bat?
legs, arm, and hand muscles!
What happens to your upper arm muscles when you arm at the elbow to eat your favorite sandwich?
for example when you eat a bologna sandwich on rye, the fulcrum in your arm levers the joints in your body. This causes there to be a friction between the two muscles, causing your elbow to properly bend.
why are joints needed in the arm?
The bones of the arm and hand have the important jobs of supporting the upper limb and providing attachment points for the muscles that move the upper limb. These bones form joints that provide a wide range of motion and flexibility needed to manipulate objects deftly with the arm and hand.
What muscles cause the joints to straighten?
The right answer is StrainThat would depend on the joint. The knee joint is straightened with the quadricep muscle (thigh). And the elbow joint is straightened with the tricep muscle (back of the arm)LigamentsPerhaps extensor muscles. (ligaments function to hold joints together, they are not muscles.)
The muscles of the arm are what to the skin of the arm?
The muscles of the arm are natural tighteners to the skin of the arm
What muscles are used in catching a ball?
the arm muscles which are called reflexs. the arm muscles which are called reflexs. the arm muscles which are called reflexs.
What are the muscles called that cross two joints and act on both joints?
biarticulate or biaxial muscles
What allows you to flex and extend your lower leg and upper arms?
flexing is tightening of your muscles, and joints bend to let you extend your arm from the elbow and shoulder
What muscles are used in cheering?
you use your leg muscles alot and your arm muscles. you use your leg muscles alot and your arm muscles.
What monitors Equilibrium and the activities of muscles and joints?
Equilibrium and the activities of muscles and joints are monitored by proprioceptors. Proprioceptors can be found in joints and skeletal striated muscles.proprioceptorsproprioceptors
Which of your movable joints are-and-socket joints?
your arm and hips are one of them
Which of your movable joints are ball-joints?
your arm and hips are one of them
