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The first intercostal nerve rarely gives off a lateral cutaneous branch; but sometimes sends a small branch to communicate with the intercostobrachial. From the second thoracic nerve it frequently receives a connecting twig, which ascends over the neck of the second rib. This nerve was first described by Kuntz in 1927.
The intercostobrachial nerve is the name applied to the lateral cutaneous branch of the second intercostal nerve. It arises anterior to the long thoracic nerve . It provides sensory innervation to the skin of the axilla, and a variable region of the medial side of the upper arm.
Infratrochlear nerve; Intercostal nerves; Intercostobrachial nerve; Intermediate cutaneous nerve; Internal carotid plexus; Internal laryngeal nerve; Interneuron; Jugular ganglion; Lacrimal nerve; Lateral cord; Lateral cutaneous nerve of forearm; Lateral cutaneous nerve of thigh; Lateral pectoral nerve; Lateral plantar nerve; Lateral pterygoid ...
The ventral rami supply the antero-lateral parts of the trunk and the limbs. They are mainly larger than the dorsal rami. Shortly after a spinal nerve exits the intervertebral foramen, it branches into the dorsal ramus, the ventral ramus, and the ramus communicans. Each of these three structures carries both sensory and motor information.
The anterior rami will follow the course of the rib - T1 will contribute to the brachial plexus & a smaller branch will form the first intercostal nerve - T2 and sometimes T1 contributes to the intercostobrachial nerve Each intercostal nerve gives off a lateral cutaneous branch which divides into an anterior branch and a posterior branch which ...
The general rule of interaction of the nerve fibers in the sympathetic nervous system begins at the spinal cord. Here they arise from the thoracolumbar (T1–L2) regions' lateral horn of grey and emerge via the ventral root. They enter their respective spinal nerve (e.g. T5), and thus enter the white ramus communicans. This myelinated division ...
The medial cutaneous branches of the posterior divisions of the thoracic nerves descend for some distance close to the spinous processes before reaching the skin, while the lateral branches travel downward for a considerable distance—it may be as much as the breadth of four ribs—before they become superficial; the branch from the twelfth thoracic, for instance, reaches the skin only a ...
These pierce the intercostales externi and the obliquus externus abdominis, in the same line as the lateral cutaneous branches of the upper thoracic nerves, and divide into anterior and posterior branches, which are distributed to the skin of the abdomen and back; the anterior branches supply the digitations of the obliquus externus abdominis ...