The sternocleidomastoid muscles are the ones that flex when the intercostals are flexed. This will also cause the scalene muscles to flex.
Internal Intercostals
The main muscle that flexes the forearm is the biceps brachii.
Intercostals, sternocostals, subcostals
i THE ILIOPSOAS
sternocleidomastoid
it flexes and rotates the head
quadricep
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
The brachialis is a muscle in the upper arm that flexes the elbow joint.
cranial tibial muscles
the sternocleidomastoid, rectus muscle, longus muscle, and scalene muscles
Flexor digiti minimi brevis is a muscle that flexes the little finger. Frontalis is a facial muscle that wrinkles the eyebrow. FLexor pollicis brevis is a muscle that flexes the thumb.