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The acute viral infection that affects the intercostal nerves is called herpes zoster, commonly known as shingles. It is caused by the reactivation of the varicella-zoster virus, which also causes chickenpox. Shingles is characterized by a painful rash and can lead to complications such as postherpetic neuralgia. The infection typically presents as a localized, blistering rash along a dermatome corresponding to the affected nerves.
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What are the spaces between the ribs called?
Intercostal spaces
What two nerves carry activating impulses to the muscles of inspiration?
The Phrenic & Intercostal nerves.
What are the breathing nerves?
The primary nerves involved in breathing are the phrenic nerve and the intercostal nerves. The phrenic nerve controls the diaphragm, the main muscle involved in breathing, while the intercostal nerves control the muscles between the ribs that help with the mechanics of breathing.
What are intercostal nerves formed from?
Anterior branches of thoracic spinal nerves.
What are the gaps imbertween the ribs called?
The gaps between the ribs are called intercostal spaces. These spaces are occupied by intercostal muscles, which play a crucial role in the mechanics of breathing by helping to expand and contract the ribcage. Each intercostal space is numbered according to the rib above it, and they also contain nerves, blood vessels, and lymphatics.
Which nerve plexus would serve the abdominal muscles?
The abdominal muscles are primarily innervated by the lower intercostal nerves, which originate from the thoracic spinal nerves. These nerves come together to form the lower thoracic intercostal nerves and the subcostal nerve, collectively contributing to the innervation of the abdominal muscles.
What is in between human ribs?
In between human ribs are layers of intercostal muscles, nerves, and blood vessels that help support and protect the ribcage. Additionally, there is a thin layer of connective tissue called the intercostal membrane that separates each rib.
What is the nerves that carry activating impulses to the muscles of inspiration?
The nerves that carry activating impulses to the muscles of inspiration are primarily the phrenic nerves. These nerves originate from the cervical spinal cord (C3-C5) and innervate the diaphragm, the primary muscle of respiration. Additionally, the intercostal nerves, which arise from the thoracic spinal nerves, stimulate the intercostal muscles that assist in expanding the thoracic cavity during inhalation. Together, these nerves coordinate the process of breathing.
What is the Innervation of visceral and parietal pleura?
The visceral pleura is innervated by autonomic nerves that travel with the bronchial blood vessels. The parietal pleura is innervated by somatic nerves, specifically the intercostal nerves and the phrenic nerve.
What does infection from leprosy of the nerves lead to?
Infection in and destruction of the nerves leads to sensory loss.
Which regions of the body are supplied by plexuses and which are served by intercostal nerves?
Plexuses primarily supply the limbs and certain body regions, with major examples being the brachial plexus for the upper limb, the lumbar plexus for the lower limb, and the sacral plexus also serving the lower limb and pelvic area. In contrast, intercostal nerves supply the thoracic wall, including the intercostal muscles, skin over the thorax, and parts of the abdominal wall. These nerves arise from the thoracic spinal nerves and do not form plexuses.
Where does the intercostal nerves innervate?
The intercostal nerves innervate the muscles and skin in the thoracic wall. Specifically, they provide motor innervation to the intercostal muscles, which are essential for breathing, and sensory innervation to the skin over the thorax and upper abdominal wall. Each intercostal nerve corresponds to a specific rib and supplies the area below it, extending from T1 to T11. The T12 nerve, known as the subcostal nerve, innervates the area below the 12th rib.
