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Questions and Answers
Match the following parts of the brachial plexus with their corresponding nerves:
Match the following parts of the brachial plexus with their corresponding nerves:
Raíz = Ventral rami of the spinal nerves that form the brachial plexus Tronco = Branches of the trunks Cordón = Branches of the divisions Rama = Peripheral nerves that arise from the cords
Match the nerves that form each trunk of the brachial plexus:
Match the nerves that form each trunk of the brachial plexus:
Tronco superior = C5-C6 Tronco medio = C7 Tronco inferior = C8-T1 Tronco lateral = C5-T1
Match the cords of the brachial plexus with their corresponding nerves:
Match the cords of the brachial plexus with their corresponding nerves:
Cordón lateral = Musculocutaneous nerve and median nerve Cordón medial = Ulnar nerve and median nerve Cordón posterior = Axillary nerve and radial nerve Cordón anterior = Radial nerve and musculocutaneous nerve
Match the nerves of the brachial plexus with their corresponding muscles:
Match the nerves of the brachial plexus with their corresponding muscles:
Match the nerves of the brachial plexus with their corresponding innervations:
Match the nerves of the brachial plexus with their corresponding innervations:
Match the nerves that form the cords of the brachial plexus:
Match the nerves that form the cords of the brachial plexus:
Match the nerves of the brachial plexus with their corresponding spinal nerves:
Match the nerves of the brachial plexus with their corresponding spinal nerves:
Match the parts of the brachial plexus with their corresponding functions:
Match the parts of the brachial plexus with their corresponding functions:
Match the nerves of the brachial plexus with their corresponding functions:
Match the nerves of the brachial plexus with their corresponding functions:
Match the nerves of the brachial plexus with their corresponding functions:
Match the nerves of the brachial plexus with their corresponding functions:
Study Notes
Brachial Plexus Anatomy
Formation
- The brachial plexus is a complex network of nerves formed by the ventral rami of the lower four cervical nerves (C5-C8) and the first thoracic nerve (T1)
- The roots of the brachial plexus emerge from the spinal cord and exit the vertebral column through the intervertebral foramina
Divisions
- The brachial plexus is divided into five main parts:
- Roots: The ventral rami of the spinal nerves that form the brachial plexus
- Trunks: The three main branches of the brachial plexus (superior, middle, and inferior)
- Divisions: The six branches of the trunks (three anterior and three posterior)
- Cords: The three main branches of the divisions (lateral, medial, and posterior)
- Branches: The peripheral nerves that arise from the cords
Trunks
- The three trunks of the brachial plexus are:
- Superior trunk (C5-C6): Forms the lateral and posterior cords
- Middle trunk (C7): Forms the lateral and medial cords
- Inferior trunk (C8-T1): Forms the medial and posterior cords
Cords
- The three cords of the brachial plexus are:
- Lateral cord: Forms the musculocutaneous nerve and contributes to the median nerve
- Medial cord: Forms the ulnar nerve and contributes to the median nerve
- Posterior cord: Forms the axillary and radial nerves
Branches
- The main branches of the brachial plexus include:
- Musculocutaneous nerve (C5-C6): Innervates the flexor compartment of the arm
- Axillary nerve (C5-C6): Innervates the deltoid and teres minor muscles
- Radial nerve (C5-T1): Innervates the extensor compartment of the arm
- Median nerve (C6-T1): Innervates the flexor compartment of the forearm
- Ulnar nerve (C7-T1): Innervates the flexor compartment of the forearm
Anatomía del Plexo Braquial
Formación
- El plexo braquial es una red compleja de nervios formada por las ramas ventrales de los cuatro nervios cervicales inferiores (C5-C8) y el primer nervio torácico (T1)
- Las raíces del plexo braquial emergen de la médula espinal y salen de la columna vertebral a través de los forámenos intervertebrales
Divisiones
- El plexo braquial se divide en cinco partes principales: raíces, troncos, divisiones, cordones y ramas
- Las raíces son las ramas ventrales de los nervios espinales que forman el plexo braquial
- Los troncos son las tres ramas principales del plexo braquial
- Las divisiones son las seis ramas de los troncos (tres anteriores y tres posteriores)
- Los cordones son las tres ramas principales de las divisiones (lateral, medial y posterior)
- Las ramas son los nervios periféricos que surgen de los cordones
Troncos
- Los tres troncos del plexo braquial son: tronco superior (C5-C6), tronco medio (C7) y tronco inferior (C8-T1)
- El tronco superior forma los cordones lateral y posterior
- El tronco medio forma los cordones lateral y medial
- El tronco inferior forma los cordones medial y posterior
Cordones
- Los tres cordones del plexo braquial son: cordón lateral, cordón medial y cordón posterior
- El cordón lateral forma el nervio musculocutáneo y contribuye al nervio mediano
- El cordón medial forma el nervio ulnar y contribuye al nervio mediano
- El cordón posterior forma los nervios axilar y radial
Ramas
- Las ramas principales del plexo braquial incluyen: nervio musculocutáneo (C5-C6), nervio axilar (C5-C6), nervio radial (C5-T1), nervio mediano (C6-T1) y nervio ulnar (C7-T1)
- El nervio musculocutáneo inerva la compartimiento flexor del brazo
- El nervio axilar inerva los músculos deltoides y teres menor
- El nervio radial inerva la compartimiento extensor del brazo
- El nervio mediano inerva la compartimiento flexor del antebrazo
- El nervio ulnar inerva la compartimiento flexor del antebrazo
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Description
Aprende sobre la formación y divisiones del plexo braquial, un complejo sistema de nervios que se origina en la médula espinal. Conoce sus partes y funciones.
