Quiz del Plexo Braquial: Anatomía y Funciones

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Questions and Answers

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:

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:

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:

Nervio axilar = Deltoid and teres minor muscles Nervio radial = Extensor compartment of the arm Nervio musculocutáneo = Flexor compartment of the arm Nervio mediano = Flexor compartment of the forearm Signup and view all the answers

Match the nerves of the brachial plexus with their corresponding innervations:

Nervio musculocutáneo = Flexor compartment of the arm Nervio radial = Extensor compartment of the arm Nervio mediano = Flexor compartment of the forearm Nervio ulnar = Extensor compartment of the forearm Signup and view all the answers

Match the nerves that form the cords of the brachial plexus:

Cordón lateral = Nervio musculocutáneo and nervio mediano Cordón medial = Nervio ulnar and nervio mediano Cordón posterior = Nervio axilar and nervio radial Cordón anterior = Nervio radial and nervio musculocutáneo Signup and view all the answers

Match the nerves of the brachial plexus with their corresponding spinal nerves:

Nervio musculocutáneo = C5-C6 Nervio radial = C5-T1 Nervio mediano = C6-T1 Nervio ulnar = C7-T1 Signup and view all the answers

Match the parts of the brachial plexus with their corresponding functions:

Raíces = Form the brachial plexus Troncos = Branches of the roots Cordones = Branches of the trunks Ramificaciones = Peripheral nerves that arise from the cords Signup and view all the answers

Match the nerves of the brachial plexus with their corresponding functions:

Nervio axilar = Innervates the deltoid and teres minor muscles Nervio radial = Innervates the extensor compartment of the arm Nervio musculocutáneo = Innervates the flexor compartment of the arm Nervio mediano = Innervates the flexor compartment of the forearm Signup and view all the answers

Match the nerves of the brachial plexus with their corresponding functions:

Nervio ulnar = Innervates the flexor compartment of the forearm Nervio radial = Innervates the extensor compartment of the arm Nervio mediano = Innervates the flexor compartment of the forearm Nervio musculocutáneo = Innervates the flexor compartment of the arm Signup and view all the answers

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:
1. Roots: The ventral rami of the spinal nerves that form the brachial plexus
2. Trunks: The three main branches of the brachial plexus (superior, middle, and inferior)
3. Divisions: The six branches of the trunks (three anterior and three posterior)
4. Cords: The three main branches of the divisions (lateral, medial, and posterior)
5. 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.