El documento resume las bases biológicas de la conducta, incluyendo la estructura y función de las neuronas, sinapsis y neurotransmisores. Describe el sistema nervioso central y periférico, con el cerebro divido en hemisferios izquierdo y derecho que controlan funciones diferentes. Explica cómo las neuronas transmiten mensajes químicos y eléctricos para coordinar el movimiento y procesamiento sensorial.
The document provides information about the nervous system and its components. It discusses the basic structure and function of neurons. It describes the central nervous system which includes the brain and spinal cord. The brain is divided into three main parts - the cerebrum, cerebellum and medulla. During development, the central nervous system originates from the neural plate and neural tube. The document also discusses various parts of the brain like the rhombencephalon, mesencephalon, diencephalon and telencephalon and their functions.
The document discusses the peripheral nervous system. It describes the classification of the PNS into the somatic, autonomic, and enteric nervous systems. The autonomic nervous system is further divided into the sympathetic and parasympathetic nervous systems. The structure and functions of the sympathetic and parasympathetic nervous systems are explained. The spinal cord, spinal nerves, and plexuses are also described.
The document discusses the main components and functions of the human nervous system. It explains that the nervous system is comprised of the brain, spinal cord, and nerves. The brain contains three main parts - the cerebrum, cerebellum, and brain stem. The cerebrum controls voluntary actions and stores data. The cerebellum coordinates movements and controls balance. The brain stem connects the brain to the spinal cord and controls neurological functions. The spinal cord and nerves transmit signals between the brain, spinal cord, and organs throughout the body.
The document provides information about nerve physiology, including the structure and function of the central nervous system (CNS), peripheral nervous system (PNS), and their components. It discusses the organization of the nervous system and different types of neurons classified by function, number of poles, and axon length. Additionally, it describes the structure and functions of neurons, including the cell body, dendrites, axon, and synaptic knobs. Finally, it summarizes the different types of neuroglia in the CNS and PNS, focusing on their roles in supporting and insulating neurons.
El documento describe el sistema límbico, que está compuesto de una serie de estructuras cerebrales relacionadas con las emociones, el aprendizaje y la memoria. El sistema límbico incluye el hipotálamo, que integra patrones de comportamiento básico; el hipocampo, relacionado con la memoria y las emociones; y la amígdala, involucrada en las respuestas emocionales. Otras estructuras mencionadas son el cuerpo calloso, la hipófisis, el tálamo y el fornix.
The document discusses the nervous system and its components. It describes how the nervous system is made up of the central nervous system (brain and spinal cord) and peripheral nervous system (nerves connecting the CNS to the rest of the body). Neurons are specialized cells that carry electrochemical signals through the nervous system. There are three main types of neurons: motor neurons, sensory neurons, and interneurons. Synapses allow neurons to transmit signals to other neurons or target cells.
El documento resume las bases biológicas de la conducta, incluyendo la estructura y función de las neuronas, sinapsis y neurotransmisores. Describe el sistema nervioso central y periférico, con el cerebro divido en hemisferios izquierdo y derecho que controlan funciones diferentes. Explica cómo las neuronas transmiten mensajes químicos y eléctricos para coordinar el movimiento y procesamiento sensorial.
The document provides information about the nervous system and its components. It discusses the basic structure and function of neurons. It describes the central nervous system which includes the brain and spinal cord. The brain is divided into three main parts - the cerebrum, cerebellum and medulla. During development, the central nervous system originates from the neural plate and neural tube. The document also discusses various parts of the brain like the rhombencephalon, mesencephalon, diencephalon and telencephalon and their functions.
The document discusses the peripheral nervous system. It describes the classification of the PNS into the somatic, autonomic, and enteric nervous systems. The autonomic nervous system is further divided into the sympathetic and parasympathetic nervous systems. The structure and functions of the sympathetic and parasympathetic nervous systems are explained. The spinal cord, spinal nerves, and plexuses are also described.
The document discusses the main components and functions of the human nervous system. It explains that the nervous system is comprised of the brain, spinal cord, and nerves. The brain contains three main parts - the cerebrum, cerebellum, and brain stem. The cerebrum controls voluntary actions and stores data. The cerebellum coordinates movements and controls balance. The brain stem connects the brain to the spinal cord and controls neurological functions. The spinal cord and nerves transmit signals between the brain, spinal cord, and organs throughout the body.
The document provides information about nerve physiology, including the structure and function of the central nervous system (CNS), peripheral nervous system (PNS), and their components. It discusses the organization of the nervous system and different types of neurons classified by function, number of poles, and axon length. Additionally, it describes the structure and functions of neurons, including the cell body, dendrites, axon, and synaptic knobs. Finally, it summarizes the different types of neuroglia in the CNS and PNS, focusing on their roles in supporting and insulating neurons.
El documento describe el sistema límbico, que está compuesto de una serie de estructuras cerebrales relacionadas con las emociones, el aprendizaje y la memoria. El sistema límbico incluye el hipotálamo, que integra patrones de comportamiento básico; el hipocampo, relacionado con la memoria y las emociones; y la amígdala, involucrada en las respuestas emocionales. Otras estructuras mencionadas son el cuerpo calloso, la hipófisis, el tálamo y el fornix.
The document discusses the nervous system and its components. It describes how the nervous system is made up of the central nervous system (brain and spinal cord) and peripheral nervous system (nerves connecting the CNS to the rest of the body). Neurons are specialized cells that carry electrochemical signals through the nervous system. There are three main types of neurons: motor neurons, sensory neurons, and interneurons. Synapses allow neurons to transmit signals to other neurons or target cells.
This document provides an overview of the nervous system. It describes the nervous system as having two main parts: the central nervous system (CNS), comprising the brain and spinal cord, and the peripheral nervous system (PNS). The CNS acts as the integration and command center, while the PNS connects it to the rest of the body. Neurons are the basic functional units and come in sensory, motor, and interneuron types. The document also outlines the anatomical organization and basic functions of the nervous system, including integration at different levels and the roles of neuroglia like oligodendrocytes and Schwann cells.
The nervous system has two main parts - the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is made up of the brain and spinal cord, and acts as the main control center. The brain controls all body functions and processes sensory information. The spinal cord relays messages between the brain and body and coordinates reflexes. The PNS connects the CNS to the rest of the body using cranial and spinal nerves. It links the CNS to sensory receptors and muscles throughout the body.
Las neuronas son células especializadas en la recepción y conducción de impulsos nerviosos. Poseen un soma que contiene el núcleo y sustancia de Nissl para la síntesis de proteínas, dendritas para recibir señales de otras células, y un axón mielinizado para transmitir los impulsos a largas distancias a alta velocidad. Las neuronas se comunican de forma precisa y rápida para coordinar las funciones del sistema nervioso.
The nervous system is divided into the central nervous system (CNS) and peripheral nervous system (PNS). The CNS includes the brain and spinal cord. The PNS includes nerves connecting the CNS to other parts of the body. The PNS is further divided into the somatic and autonomic nervous systems. The autonomic nervous system regulates involuntary body functions and is divided into the sympathetic and parasympathetic nervous systems. The brain contains several parts that each have specific functions like processing sensory information, motor control, and regulating homeostasis. Neurons transmit signals as electrical impulses through a process involving ion exchanges across the cell membrane.
El documento describe el sistema nervioso como una red de tejidos altamente especializada compuesta principalmente por neuronas. El sistema nervioso está constituido por órganos receptores, vías aferentes o sensitivas, vías eferentes o motoras, y el sistema nervioso central que incluye el cerebro, cerebelo y médula espinal. El sistema nervioso periférico está formado por los nervios que conectan el sistema nervioso central con el resto del cuerpo.
Este documento describe el sistema nervioso y sus componentes principales. Explica que el sistema nervioso está compuesto por el sistema nervioso central (cerebro y médula espinal) y el sistema nervioso periférico (nervios que conectan el sistema nervioso central con el resto del cuerpo). También describe las funciones generales del sistema nervioso como la sensorial, integradora y motora.
El documento describe el sistema nervioso humano, incluyendo que está compuesto por el sistema nervioso central (el encéfalo y la médula espinal) y el sistema nervioso periférico. Transmite información a través de neuronas usando impulsos eléctricos y químicos. El encéfalo incluye el cerebro, cerebelo y bulbo raquídeo, cada uno con funciones importantes como el pensamiento, los movimientos y las funciones vitales.
El documento describe el sistema nervioso humano. Explica que está compuesto por el sistema nervioso central (incluyendo el encéfalo y la médula espinal) y el sistema nervioso periférico. Describe las funciones del sistema nervioso como sensoria, integradora y efectora. Además, explica conceptos clave como neuronas, sinapsis, reflejos y los diferentes órganos que componen el sistema nervioso.
El documento describe el sistema nervioso y sus principales componentes. El sistema nervioso recibe información de los cambios internos y externos del cuerpo a través de los sentidos y percibe los estímulos, respondiendo en consecuencia para controlar el funcionamiento del cuerpo. Las neuronas son las células especializadas del sistema nervioso y se agrupan en centros nerviosos como el cerebro, médula espinal y cerebelo para controlar las distintas funciones del cuerpo.
The nervous system is made up of neurons that transmit signals throughout the body to regulate functions like heartbeat, digestion, and blood pressure in order to maintain homeostasis. It has two main parts - the central nervous system containing the brain and spinal cord, and the peripheral nervous system with nerves connecting the CNS to the rest of the body. The brain is divided into the cerebrum, cerebellum, and brain stem and coordinates all body activities including voluntary movement, balance, and autonomic functions.
El sistema nervioso central está constituido por el encéfalo y la médula espinal. El encéfalo incluye el cerebro, cerebelo y tronco encefálico, y controla las funciones del cuerpo. La médula espinal transmite información entre el encéfalo y el resto del cuerpo. El sistema nervioso periférico conecta el sistema nervioso central con otras partes del cuerpo y está dividido en los sistemas somático y autónomo.
El documento resume el sistema nervioso y los órganos de los sentidos. Explica que el sistema nervioso está compuesto por el sistema nervioso central y periférico. El sistema nervioso central incluye el encéfalo y la médula espinal, mientras que el periférico incluye receptores, nervios y centros nerviosos. Los nervios transportan información sensorial y motora a través de impulsos nerviosos. Los cinco sentidos principales son la vista, el oído, el olfato, el gusto y el tacto, cada uno
El documento describe los principales componentes y funciones del sistema nervioso. El sistema nervioso central incluye el encéfalo y la médula espinal y se encarga de percibir estímulos, transmitir impulsos sensitivos y motores. El sistema nervioso periférico transmite impulsos entre el sistema nervioso central y los órganos. El sistema nervioso autónomo regula funciones involuntarias como la respiración y la circulación. Las neuronas son la unidad funcional y se comunican a través de sinapsis.
The document discusses the structure and function of the nervous system. It describes how the nervous system is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS). The CNS is further divided into grey matter and white matter. The PNS includes sensory and motor divisions. Key cell types that make up nervous tissue are described such as neurons, glial cells, and myelin sheaths. Reflex arcs and examples of reflexes like the patellar reflex are explained. An overview of the spinal cord, spinal nerves, and plexuses is provided. The major regions of the brainstem and diencephalon are outlined along with some of their functions in regulating
El sistema nervioso periférico (SNP) está formado por ganglios neuronales y nervios fuera del sistema nervioso central (SNC), y conecta el SNC con los músculos y glándulas para transmitir información sensitiva e impulsos motores. El SNP incluye el sistema nervioso somático, que controla los movimientos voluntarios, y el sistema nervioso autónomo (SNA), que regula funciones involuntarias como la actividad de las vísceras a través de sus divisiones simpática y parasimpática.
The document summarizes the structure and function of the nervous system. It is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS). The CNS controls and coordinates body activities, while the PNS connects the CNS to other parts of the body. Within the nervous system are neurons, which transmit signals, and the brain, spinal cord, nerves, and ganglia through which signals travel from the CNS to the rest of the body and back.
THIS PRESENTATION IS UPLOADED TO HELP THE EDUCATOR OF MEDICAL, NURSING & ALLIE HEALTH SCIENCES TO TEACH THEIR STUDENTS ABOUT THE NERVOUS SYSTEM. IT WILL ALSO CREATE AWARENESS AMONG THE COMMON PEOPLE REGARDING NERVOUS SYSTEM.
- The nervous system is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS), which includes nerves outside the CNS.
- Neurons are the basic functional units of the nervous system and transmit electrochemical signals. A neuron has a cell body, dendrites that receive signals, and an axon that transmits signals to other neurons or effector cells.
- The PNS is further divided into the somatic and autonomic systems. The somatic system controls skeletal muscles and senses the external environment. The autonomic system regulates involuntary functions through the sympathetic and parasympathetic divisions.
This document provides an overview of the nervous system. It describes the nervous system as having two main parts: the central nervous system (CNS), comprising the brain and spinal cord, and the peripheral nervous system (PNS). The CNS acts as the integration and command center, while the PNS connects it to the rest of the body. Neurons are the basic functional units and come in sensory, motor, and interneuron types. The document also outlines the anatomical organization and basic functions of the nervous system, including integration at different levels and the roles of neuroglia like oligodendrocytes and Schwann cells.
The nervous system has two main parts - the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is made up of the brain and spinal cord, and acts as the main control center. The brain controls all body functions and processes sensory information. The spinal cord relays messages between the brain and body and coordinates reflexes. The PNS connects the CNS to the rest of the body using cranial and spinal nerves. It links the CNS to sensory receptors and muscles throughout the body.
Las neuronas son células especializadas en la recepción y conducción de impulsos nerviosos. Poseen un soma que contiene el núcleo y sustancia de Nissl para la síntesis de proteínas, dendritas para recibir señales de otras células, y un axón mielinizado para transmitir los impulsos a largas distancias a alta velocidad. Las neuronas se comunican de forma precisa y rápida para coordinar las funciones del sistema nervioso.
The nervous system is divided into the central nervous system (CNS) and peripheral nervous system (PNS). The CNS includes the brain and spinal cord. The PNS includes nerves connecting the CNS to other parts of the body. The PNS is further divided into the somatic and autonomic nervous systems. The autonomic nervous system regulates involuntary body functions and is divided into the sympathetic and parasympathetic nervous systems. The brain contains several parts that each have specific functions like processing sensory information, motor control, and regulating homeostasis. Neurons transmit signals as electrical impulses through a process involving ion exchanges across the cell membrane.
El documento describe el sistema nervioso como una red de tejidos altamente especializada compuesta principalmente por neuronas. El sistema nervioso está constituido por órganos receptores, vías aferentes o sensitivas, vías eferentes o motoras, y el sistema nervioso central que incluye el cerebro, cerebelo y médula espinal. El sistema nervioso periférico está formado por los nervios que conectan el sistema nervioso central con el resto del cuerpo.
Este documento describe el sistema nervioso y sus componentes principales. Explica que el sistema nervioso está compuesto por el sistema nervioso central (cerebro y médula espinal) y el sistema nervioso periférico (nervios que conectan el sistema nervioso central con el resto del cuerpo). También describe las funciones generales del sistema nervioso como la sensorial, integradora y motora.
El documento describe el sistema nervioso humano, incluyendo que está compuesto por el sistema nervioso central (el encéfalo y la médula espinal) y el sistema nervioso periférico. Transmite información a través de neuronas usando impulsos eléctricos y químicos. El encéfalo incluye el cerebro, cerebelo y bulbo raquídeo, cada uno con funciones importantes como el pensamiento, los movimientos y las funciones vitales.
El documento describe el sistema nervioso humano. Explica que está compuesto por el sistema nervioso central (incluyendo el encéfalo y la médula espinal) y el sistema nervioso periférico. Describe las funciones del sistema nervioso como sensoria, integradora y efectora. Además, explica conceptos clave como neuronas, sinapsis, reflejos y los diferentes órganos que componen el sistema nervioso.
El documento describe el sistema nervioso y sus principales componentes. El sistema nervioso recibe información de los cambios internos y externos del cuerpo a través de los sentidos y percibe los estímulos, respondiendo en consecuencia para controlar el funcionamiento del cuerpo. Las neuronas son las células especializadas del sistema nervioso y se agrupan en centros nerviosos como el cerebro, médula espinal y cerebelo para controlar las distintas funciones del cuerpo.
The nervous system is made up of neurons that transmit signals throughout the body to regulate functions like heartbeat, digestion, and blood pressure in order to maintain homeostasis. It has two main parts - the central nervous system containing the brain and spinal cord, and the peripheral nervous system with nerves connecting the CNS to the rest of the body. The brain is divided into the cerebrum, cerebellum, and brain stem and coordinates all body activities including voluntary movement, balance, and autonomic functions.
El sistema nervioso central está constituido por el encéfalo y la médula espinal. El encéfalo incluye el cerebro, cerebelo y tronco encefálico, y controla las funciones del cuerpo. La médula espinal transmite información entre el encéfalo y el resto del cuerpo. El sistema nervioso periférico conecta el sistema nervioso central con otras partes del cuerpo y está dividido en los sistemas somático y autónomo.
El documento resume el sistema nervioso y los órganos de los sentidos. Explica que el sistema nervioso está compuesto por el sistema nervioso central y periférico. El sistema nervioso central incluye el encéfalo y la médula espinal, mientras que el periférico incluye receptores, nervios y centros nerviosos. Los nervios transportan información sensorial y motora a través de impulsos nerviosos. Los cinco sentidos principales son la vista, el oído, el olfato, el gusto y el tacto, cada uno
El documento describe los principales componentes y funciones del sistema nervioso. El sistema nervioso central incluye el encéfalo y la médula espinal y se encarga de percibir estímulos, transmitir impulsos sensitivos y motores. El sistema nervioso periférico transmite impulsos entre el sistema nervioso central y los órganos. El sistema nervioso autónomo regula funciones involuntarias como la respiración y la circulación. Las neuronas son la unidad funcional y se comunican a través de sinapsis.
The document discusses the structure and function of the nervous system. It describes how the nervous system is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS). The CNS is further divided into grey matter and white matter. The PNS includes sensory and motor divisions. Key cell types that make up nervous tissue are described such as neurons, glial cells, and myelin sheaths. Reflex arcs and examples of reflexes like the patellar reflex are explained. An overview of the spinal cord, spinal nerves, and plexuses is provided. The major regions of the brainstem and diencephalon are outlined along with some of their functions in regulating
El sistema nervioso periférico (SNP) está formado por ganglios neuronales y nervios fuera del sistema nervioso central (SNC), y conecta el SNC con los músculos y glándulas para transmitir información sensitiva e impulsos motores. El SNP incluye el sistema nervioso somático, que controla los movimientos voluntarios, y el sistema nervioso autónomo (SNA), que regula funciones involuntarias como la actividad de las vísceras a través de sus divisiones simpática y parasimpática.
The document summarizes the structure and function of the nervous system. It is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS). The CNS controls and coordinates body activities, while the PNS connects the CNS to other parts of the body. Within the nervous system are neurons, which transmit signals, and the brain, spinal cord, nerves, and ganglia through which signals travel from the CNS to the rest of the body and back.
THIS PRESENTATION IS UPLOADED TO HELP THE EDUCATOR OF MEDICAL, NURSING & ALLIE HEALTH SCIENCES TO TEACH THEIR STUDENTS ABOUT THE NERVOUS SYSTEM. IT WILL ALSO CREATE AWARENESS AMONG THE COMMON PEOPLE REGARDING NERVOUS SYSTEM.
- The nervous system is divided into the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS), which includes nerves outside the CNS.
- Neurons are the basic functional units of the nervous system and transmit electrochemical signals. A neuron has a cell body, dendrites that receive signals, and an axon that transmits signals to other neurons or effector cells.
- The PNS is further divided into the somatic and autonomic systems. The somatic system controls skeletal muscles and senses the external environment. The autonomic system regulates involuntary functions through the sympathetic and parasympathetic divisions.
The document discusses how the author chose to use art and craft groups at their fieldwork placement in an assisted living facility. It states that art and craft occupations are important for residents as they provide meaningful engagement, encourage social interaction, and foster creativity. The occupations help residents feel capable, provide a sense of purpose and self-worth, and allow introspection and appreciation of their environment.
22 Corso TSSA Croce Rossa - Traumi dell’apparato muscolo scheletricoEmergency Live
Il corso TSSA (corso nazionale per l’attività di trasporto sanitario e soccorso in ambulanza) è il corso sanitario avanzato della Croce Rossa Italiana che si prefigge di formare il SOCCORRITORE, cioè il Volontario che svolgerà la sua attività sulle ambulanza e perciò il percorso addestrativo è tipicamente sanitario. I corsi sono tenuti da Istruttori di Croce Rossa qualificati con un apposito percorso specifico. I moduli formativi sono 6. Bastano i primi 4 moduli per diventare soccorritore, gli altri due moduli sono di approfondimento e completamento di percorsi regionali. L’accesso a questo corso prevede l’obbligatorietà di essere Socio Attivo CRI e quindi di aver frequentato il Corso Base. Gli incontri vertono principalmente sulle problematiche del soccorso extra-ospedaliero e si dividono in lezioni teoriche e parti pratiche con particolare riferimento alla Traumatologia, alla Rianimazione cardio-polmonare con l’ottenimento del brevetto BLS-D (defibrillazione) ed all’uso dei Presidi disponibili sulle ambulanze. La cooperazione che ha portato alla creazione di queste dispense di TSSA è molto importante. Infatti non esiste materiale univoco e ufficiale per tutto il territorio Nazionale. Il materiale delle lezioni che stiamo ripubblicando è nato grazie alla collaborazione dei formatori e degli istruttori di Croce Rossa, specializzati in PSTI (Pronto Soccorso e Trasporto Infermi). Questi istruttori hanno realizzato le schede che potete liberamente consultare. Il team è costituito da 15 istruttori qualificati, il cui lavoro è stato controllato da 5 revisori (formatori, medici specialistici e tecnici esperti) che hanno corretto alcuni contenuti scientifici, rendendo poi omogeneo l'aspetto visivo del corso. In questo modo sono nate delle wikiSLIDES che ad oggi hanno più di 5.000 download dal link ufficiale. Il ringraziamento di Emergency Live va al gruppo TSSA e al coordinatore Egidio Tuccio.
O documento resume as principais partes e funções do sistema nervoso humano, incluindo o sistema nervoso central e periférico. Descreve a estrutura básica do neurônio e da sinapse, além de explicar brevemente como as drogas afetam a sinapse.
Nell'intervento presso Firenze Fiera del 1°Dicembre Floriana Pagliano parla di come potenziare lemisfero destro per apprendere di più attraverso le tecniche giapponesi del Quantum Speed Reading
Consumers can be confident they are getting the best price and product. People want more experiences even when spending less. Personalized products allow users to choose items that match their identity and personality.
Innovazione didattica: collaborative learning
Materiale prodotto dai ragazzi della classe 3° indirizzo classico del Liceo Statale Vincenzo Monti.
A.s. 2016-2017, prof Gino
ANALISI DEL NOME: un circuito con macchinine-nome.benadia
This document provides instructions for children playing with toy machines, reminding them to write down the paths taken in a notebook with commas between each turn. It also lists common nouns and their attributes like gender, number, and singular or plural forms as an example. Finally, it lists names along with numbers, likely for the children to fill in details of their toy machine paths.
Dettato di parole con suoni dolci e duri di C e G (senza l'utilizzo della H). Introduzione dedicata ai bambini della classe, utilizzato durante la DaD.
Raccolta di immagini del laboratorio a classi aperte sulla cellula animale e vegetale. Istituto comprensivo "Anna Fraentzel Celli", insegnante Nadia Bernabei.
Raccolta di immagini del laboratorio a classi aperte sulla cellula animale e vegetale. Istituto comprensivo "Anna Fraentzel Celli", insegnante Nadia Bernabei.
Italia, una passeggiata tra maschere, canti, balli...benadia
Un perfetto lavoro di squadra della classe V C dell'I.C. "Anna Fraentzel Celli" su tradizioni, balli, canti e maschere dell'Italia.
Nell'ambito del progetto "Tecnologic@mente ilLIMitati.
Le nostre esperienze: aria, mimetismo, insetti stecco, api, alberi.benadia
Ipertesto sulle esperienze svolte in classe quarta della scuola primaria dell'I.C. "A. Fraentzel Celli". E' un lavoro interdisciplinare che ha coinvolto italiano, scienze, arte e immagine, sui seguenti argomenti: aria, insetti stecco, api, mimetismo, alberi.
4. Il sistema nervoso è diviso
in due parti: il sistema
nervoso centrale e il
sistema nervoso periferico
5. Il sistema nervoso centrale è
composto dall’ encefalo e dal
midollo spinale. Riceve, elabora
gli stimoli che provengono dal
sistema nervoso periferico e
coordina gli stimoli verso di
esso, grazie ai
6. Il sistema nervoso periferico è composto dai gangli
nervosi e dai nervi periferici che collegano
l'encefalo e il midollo spinale al resto del corpo.
Ha la funzione di trasmettere al sistema nervoso
centrale le informazioni provenienti dall'ambiente
esterno e da tutte le parti del corpo e di inviare
ordini per eseguire delle azioni ai muscoli ed agli
organi interni .
7. I nervi sono le strutture
caratteristiche del sistema nervoso
periferico. Sono formati da fasci di
assoni che trasportano informazioni
da o verso il sistema nervoso
centrale. Ogni nervo contiene,
inoltre, vasi sanguigni necessari per
rifornire gli assoni e le cellule di
ossigeno e nutrienti. Nel nervo sono
presenti guaine (di tessuto
connettivo che si fanno via via più
piccole, ricoprendo prima l'intero
nervo poi fasci di assoni
e singoli assoni).
8. I nervi si dividono in:
- motori: trasmettono impulsi dal
sistema nervoso centrale verso i
muscoli e gli organi interni;
- sensoriali: trasmettono gli stimoli
sensoriali dagli organi di senso al
sistema nervoso centrale;
- misti: contengono sia fibre motorie
che sensoriali.
9. Il neurone è una cellula come qualsiasi
altra, con una membrana ed un nucleo
centrale, ma si differenzia nella forma. Il
neurone presenta da un lato ha una parte
lunga, simile ad un filo, chiamata assone e,
dall'altro lato, una serie
di fili ramificati più corti, spinosi e aguzzi
chiamati dendriti. Ciascun neurone riceve
segnali attraverso i suoi dendriti, li elabora
nel corpo cellulare o soma e poi lancia un
segnale per mezzo dell'assone al neurone
successivo.
10. Il nostro cervello è l'organo più potente,
eppure pesa solo circa 1300 grammi. Il suo
tessuto è simile ad una gelatina solida.
È suddiviso in tre aree principali:
-Il cervello, riempie quasi tutto il cranio,
ed è responsabile dei ricordi, della
capacità di risolvere problemi, del
pensiero e dei sentimenti. Inoltre
controlla il movimento.
-Il cervelletto è posto nella parte
posteriore della testa, sotto al cervello.
Controlla il coordinamento e l'equilibrio.
-Il tronco cerebrale è posto sotto al
cervello, di fronte al cervelletto. Collega il
cervello alla spina dorsale e controlla le
funzioni automatiche come il respiro, la
digestione, il battito cardiaco e la
pressione sanguigna.
11. Il midollo spinale è la principale via di
comunicazione fra il cervello ed il sistema
nervoso periferico. Il midollo spinale umano
è contenuto e protetto dalla colonna
vertebrale. È lungo circa 45 cm nell'uomo e
43 cm nella donna: in entrambi i casi è
molto più corto della colonna vertebrale.
Infatti, il midollo spinale arriva solo fino alle
ultime vertebre toraciche. I recettori della
pelle inviano informazioni al midollo spinale
tramite i nervi spinali. Il midollo spinale ha
diverse forme e dimensioni, a diversi livelli
della sua lunghezza.
12. La prima vertebra cervicale si
chiama atlante. Atlante era uno
dei Titani della mitologia greca.
Dopo una lotta con Perseo,
Atlante fu trasformato in pietra e
condannato e portare il peso del
cielo e della terra sulle sue spalle.
La prima vertebra cervicale è
stata quindi chiamata Atlante
perché porta il peso della testa.