The anterior rami of the brachial plexus are the continuations of the anterior rami of spinal nerves . these rami emerge from the intervertebral foramina and travel through the neck. the five rami unite to form the superior, middle, and inferior in the posterior triangle of the neck. nerves unite to form the superior trunk; nerve remains as the middle trunk; and nerves unite to form the inferior trunk. portions of each trunk divide deep to the clavicle into an anterior and a posterior . these primarily contain axons that innervate the anterior and posterior parts of the . upon reaching the axilla, they converge to form three .

The correct terms are -  

C5-T1,

trunks,

C5 and C6,

C7,

C8, and T1,

division,

upper limb,

cords.

Explanation:

The brachial plexus is a nerve fiber network that supplies the muscle system and skin of the upper limb of the body. It supplies through the whole upper limit or extremity, initiates in the root of the neck.

The brachial plexus is made up of the anterior divisions called anterior rami of cervical spinal nerves C5 TO C8 and T1, the first thoracic spinal nerve.

The plexus is divided into root, trunk, division, cords, and branches for the easy understanding and to help in explaining but there no functional differences between them.

the index of refraction of the second medium is higher. i just took the test trust me !