Each of a pair of long muscles that connect the sternum, clavicle, and mastoid process of the temporal bone and serve to turn and nod the head is called

Each of a pair of long muscles that connect the sternum, clavicle, and mastoid process of the temporal bone and serve to turn and nod the head is called STERNOCLEIDOMASTOID (SCM) MUSCLE.

Explanation: The name was derived from the fact that the muscle is attached to three bones; manubrium of sternum, clavicle and mastoid process of temporal bone.

When you tilt your neck to either left or right, Sternocleidomastoid muscle is located at the side of the neck which functions as an important landmark dividing the sides of the neck into two triangles.

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an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.