The sternocleidomastoid muscles are the ones that flex when the intercostals are flexed. This will also cause the scalene muscles to flex.
The most heralded bulge that flexes the elbow refers to the biceps brachii muscle. This muscle is prominent in the upper arm and is well-known for its distinctive peak when flexed. The biceps play a crucial role in elbow flexion as well as in supinating the forearm. Its well-defined appearance is often associated with strength and fitness.
Internal Intercostals
When the shank is flexed during walking, the gastrocnemius muscle, which is a major calf muscle, becomes lengthened. This occurs because the gastrocnemius crosses both the knee and ankle joints; as the knee flexes, the muscle must stretch to accommodate the movement. This lengthening allows for greater range of motion and contributes to the propulsion phase of walking. Additionally, the muscle can still function to stabilize the ankle and assist in balancing during the gait cycle.
The main muscle that flexes the forearm is the biceps brachii.
Intercostals, sternocostals, subcostals
it flexes and rotates the head
quadricep
i THE ILIOPSOAS
sternocleidomastoid
Abductor muscle - moves a limb away from the midlineAdductor muscle - moves a limb towards the midlineExtensor muscle - increase the angle at a joint - extends a limbFlexor muscle - decreases the angle at a joint - flexes a limbPronator muscle - turns a limb to face downwardsSupinator muscle - turns a limb to face upwardsRotator muscle - rotates a limbIn the human body, these are the responsible muscles.*Muscles which move the thigh and their action*Gluteus maximus - Extends and rotates thigh laterally.Adductor longus - Adducts, medially rotates and flexes the thighAdductor brevis - Adducts, laterally rotates and flexes the thighAdductor magnus - Adducts, flexes, laterally rotates and extends the thigh.Rectus femoris - Extends knee and flexes hipVastus lateralis - Extends kneeVastus medialis - Extends kneeVastus intermedius - Extends kneeSartorius - Flexes knee. Flexes hip and rotates femur laterallyBiceps femoris - Flexes leg and extends thighSemitendinosus - Flexes leg and extends thighSemimembranosus - Flexes leg and extends thigh
cranial tibial muscles
the sternocleidomastoid, rectus muscle, longus muscle, and scalene muscles