Question

how do muscles attached to bones bring out movement name to the two types of muscles which are involved in bending and straightening of arm

Answer 1

hey friend here is your answer^^

Each muscle in the pair works against the other to move bones at the joints of the body. The muscle that contracts to cause a joint to bend is called the flexor. ... The biceps and triceps act against one another to bend and straighten the elbow joint. To bend the elbow, the biceps contracts and the triceps relaxes

Answer 2

The muscles are attached to bones by tendons
They two types of muscles which are involved in bending and straitening of arm are In external shoulder rotation =Infraspinatus
In shoulder flexion =Pectoralis
HOPE IT HELPS U❤️