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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.
It passes through the axilla, at first lying behind, and then medial to the axillary vein, and communicates with the intercostobrachial nerve.. It descends along the medial side of the brachial artery to the middle of the arm, where it pierces the deep fascia, and is distributed to the skin of the back of the lower third of the arm, extending as far as the elbow, where some filaments are lost ...
The intercostal nerves are part of the somatic nervous system, and arise from the anterior rami of the thoracic spinal nerves from T1 to T11. [1] [2] The intercostal nerves are distributed chiefly to the thoracic pleura and abdominal peritoneum, and differ from the anterior rami of the other spinal nerves in that each pursues an independent course without plexus formation.
From the 12 pairs of thoracic spinal nerves, an anterior and a posterior primary rami will supply motor and sensory innervation to the thoracic region. 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 ...
The intercostobrachial nerves (which are branches of the second and third intercostal nerves) are also frequently missed with the axillary block. Because these nerves supply sensation to the skin of the medial and posterior aspects of the arm and axilla, a tourniquet on the arm may be poorly tolerated in such cases.
Composition and central connections of the spinal nerves; Pathways from the brain to the spinal cord; The meninges of the brain and medulla spinalis; The cerebrospinal fluid; The cranial nerves. The olfactory nerves; The optic nerve; The oculomotor nerve; The trochlear nerve; The trigeminal nerve; The abducens nerve; The facial nerve; The ...
Another method for testing the proper function of a nerve is Quantitative sensory testing (QST). QST relies on analysis of a patient's response to external stimuli of controlled intensity. A stimulus is applied to the skin of the nerve area being tested in ascending and descending orders of magnitude.
The posterior cutaneous nerve of arm (internal cutaneous branch of musculospiral, posterior brachial cutaneous nerve) is a branch of the radial nerve that provides sensory innervation for much of the skin on the back of the arm. It arises in the axilla.