THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The accessory nerve provides motor function (movement) to two muscles essential to neck and shoulder movement, the sternocleidomastoid (SCM) and the trapezius, as well as to the larynx (voice box) and other structures in the throat. It’s the 11th of the 12 cranial nerves and is often referred to as CN XI.

Detailed explanation-2: -Motor nerves also known as efferent nerves, carry impulses away from the brain or spinal cord to muscles and glands.

Detailed explanation-3: -Efferent, or motor, neurons transmit impulses from the CNS to effector organs such as muscles and glands.