What do the thoracic spinal nerves innervate?

What do the thoracic spinal nerves innervate?

The thoracic spine has 12 nerve roots (T1 to T12) on each side of the spine that branch from the spinal cord and control motor and sensory signals mostly for the upper back, chest, and abdomen.

Where do spinal nerves innervate?

The cervical spinal nerves innervate the muscles and provide sensation for the head, neck, and diaphragm, as well as the upper limbs and back. The lumbar, sacral, and coccygeal nerves combine to form the lumbosacral plexus.

What are nerve rootlets?

Terminology. Nerve rootlets: Individual neural filaments of dorsal and ventral roots directly exiting from spinal cord. Nerve roots: Composed of multiple individual dorsal or ventral nerve rootlets • Dorsal sensory roots exit from dorsolateral cord and have cell bodies within dorsal root ganglion (DRG)

Where is T4 and T5 in spine?

What are the T4-T8 Vertebrae? The T4-T8 vertebrae make up the rest thoracic vertebrae before the thoracic vertebrae T9 – T12. With the exception of T4, which affects both the chest and abdomen, these vertebrae primarily control abdominal muscles. The T4 and T5 vertebrae are the most commonly injured thoracic vertebrae.

What does T11 and T12 control?

They are called T11 and T12. Your lowest 2 ribs are attached to these vertebrae. The areas of the body and functions of the body controlled by the nerves exiting these vertebrae control: Kidneys, Ureters, Small Intestines, Colon, Uterus, Lymph Circulation, and the Buttocks.

Where is C5 and C6 in the spine?

The C5-C6 spinal motion segment (located in the lower cervical spine just above the C7 vertebra) provides flexibility and support to much of the neck and the head above.

How many thoracic spinal nerves are there?

There are 12 thoracic nerve pairs. The first nerve root exits between the T1 and T2 vertebrae.

What are posterior rootlets?

Anatomical terminology. The dorsal root of spinal nerve (or posterior root of spinal nerve or sensory root) is one of two “roots” which emerge from the spinal cord. It emerges directly from the spinal cord, and travels to the dorsal root ganglion. Nerve fibres with the ventral root then combine to form a spinal nerve.

Are rootlets part of the spinal cord?

The spinal nerve roots connect the peripheral nervous system to the spinal cord. The spinal roots are formed from continuous longitudinal rows of delicate rootlets attached to each side of the spinal cord along the lines of the apices of the ventral and dorsal columns of gray matter.