Skin and deep muscles of the back.
The dorsal rami are small branches of spinal nerves that emerge from the spinal cord and supply the skin and muscles of the back. They are responsible for providing sensory and motor innervation to the back of the body.
The dorsal rami serve the skin and musculature of the posterior body trunk.
The dorsal rami of a single spinal segment monitor sensory information from the skin on the back of the body, including the muscles and joints in that region. They provide sensation for a specific dermatome, which is a specific area of skin innervated by the spinal nerves from that segment.
The ventral rami serves as a form of intercostal nerves, which supply the muscles between the ribs and the skin and muscles of the anterior and lateral trunk.
Posterior Belly of Digastric Muscle (innervated by CN VII) Facial nerve Sternocleidomastoid (innervated by CN XI) Spinal accessory nerve Longissimus Capitis (innervated by dorsal rami of C3-C8 spinal nerves) Splenius Capitis (innervated by dorsal rami of middle cervical spinal nerves)
sensory; mixed
The roots are two split bases of spinal nerves that connect to the spinal cord. The rami are branches of the spinal nerve that form a complex system throughout the body with the two primary ones being the dorsal (posterior) ramus and the anterior ramus. A diagram would look like an x with the two roots coming together from the spinal cord to go through the intervertebral forming a spinal nerve then splitting again immediately after the intervertebral foramen forming the rami of the spinal nerve
skeletal muscles
spinal nerves
plexuses
The ventral rami of spinal nerves C5 to T1 contribute fibers to the brachial plexus. This plexus is responsible for innervating the muscles and skin of the shoulder, arm, and parts of the hand. It plays a crucial role in motor and sensory functions of the upper limb.
Anterior branches of thoracic spinal nerves.