The nervous system receives sensory information and coordinates motor responses. It is organized into the central nervous system (brain and spinal cord) and peripheral nervous system. The basic functional unit is the reflex arc, where sensory input leads to motor output via a feedback loop. The spinal cord mediates simple reflexes while the brain stem and cerebral cortex allow for more complex coordinated movement. The autonomic nervous system regulates involuntary functions like heart rate and digestion.
Psych 101 - Introduction to Psychology - Lecture 3WhatisPsychology
This lecture provides an overview of the physiology and complexity of the human brain and the nervous system. We will briefly examine the biological basis of behavior.
Here's a brief introduction to control and coordination class 10 science:
"Control and coordination are fundamental processes in living organisms that ensure proper functioning and response to stimuli. In simpler terms, control refers to the regulation of various activities within an organism, while coordination involves the harmonious integration of these activities. In humans and many other animals, control and coordination are primarily carried out by the nervous system and the endocrine system. The nervous system allows for rapid responses to stimuli through nerve impulses, while the endocrine system regulates physiological processes using chemical messengers called hormones. Together, these systems ensure that organisms can adapt to changes in their environment, maintain internal balance (homeostasis), and carry out essential functions for survival and well-being."
For more information, visit- www.vavaclasses.com
Psych 101 - Introduction to Psychology - Lecture 3WhatisPsychology
This lecture provides an overview of the physiology and complexity of the human brain and the nervous system. We will briefly examine the biological basis of behavior.
Here's a brief introduction to control and coordination class 10 science:
"Control and coordination are fundamental processes in living organisms that ensure proper functioning and response to stimuli. In simpler terms, control refers to the regulation of various activities within an organism, while coordination involves the harmonious integration of these activities. In humans and many other animals, control and coordination are primarily carried out by the nervous system and the endocrine system. The nervous system allows for rapid responses to stimuli through nerve impulses, while the endocrine system regulates physiological processes using chemical messengers called hormones. Together, these systems ensure that organisms can adapt to changes in their environment, maintain internal balance (homeostasis), and carry out essential functions for survival and well-being."
For more information, visit- www.vavaclasses.com
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
2. How the nervous system works?
What do you think – how our nervous system works?
What enables the nervous system to work properly?
How the nervous signal is transducted? – where it emanates?
What is the simplest functional unit of the nervous system?
Think and discuss............
2
3. How the nervous system works?
The nervous system provides the most of the
control functions over the body (maintaining
homeostasis, proccessing information to and fro,
reacting to external and internal stimuli...)
It receives billions of bits of information from
different sensory organs (can you name all sensory
organs we have?)
More than 99% of all sensory informations is
discarded by the brain as irrelevant and unimportant
After the sensory impuls has been selected as
important – impuls is channeled to proper motor
region to evoke desired response.......or is stored for
use in the future cognitive processes or motor
activities
3
4. Organization of the nervous system
Central nervous system
(consisting of brain and spinal cord)
Peripheral nervous system
(consisting of cranial and spinal nerves
Communication between CNS and rest of body)
Sensory (afferent division) –
conducts signals from
receptors to the CNS
Motor (efferent division)
Conducts signals from CNS
to effectors
Autonomic nervous system
Visceral (involuntary) motor movements
From CNS to glands and smooth muscles
Somatic nervous system
Somatic (voluntary) motor movements
Signals from CNS to skeletal muscles
4
5. How the nervous system works?
According to the direction the signal is transducted in central nervous system –
two main divisions can be named
Sensory division
Motor division
5
6. How the nervous system works?
1. Sensory division:
Most activities of the nervous system are
initiated by sensory experience
(emanating from sensory receptors)
Sensory experience usually causes
immediate response – or its memory can
be stored and used when necessary
Example:
When I return home, I can smell the fantastic
apple pie made by my grandma – what do
you think – what am I going to do first?
Make your own examples...........................
6
7. A short about sensory organs
Humans have multitude of senses, here are the most
traditionally recognized senses:
Sight - vision
Hearing – audition
Taste – gustation
Smell – olfaction
Touch – somatosensation
However the ability to detect a much wider range of
sensory modalities detected by these five senses
include- temperature (termoreception), kinesthetic
sense (proprioreception), balance (equilibrium),
vibration (mechanoreception) and various internal
stimuli..
Sensory organs transduct signals to goal area
(muscles) through the sequences of nerve synapses
7
8. How the nervous system works?
Sensory information is integrated at all levels of the
nervous system and causes appropriate motor response
begining with
A) spinal cord – responsible for basic simmple reflexes
B) extending to the brain stem – for more complicated
reflex responses
C) reaching cerebrum (cerebral cortex) – where the
most complicated reflex responses are controlled
8
9. How the nervous system works?
2. Motor division (muscles):
The most important ultimate role of
nervous system
Provides control of bodily activities
(contraction of skeletal muscle,
contraction of smooth muscle,
secretion from glands)
Muscles and glands are called the
effectors – perform functions
mediated by the nerve signals
9
10. How the nervous system works?
Major function of the central nervous system (CNS) is to process
incoming (sensory) information in such way that appropriate
motor response (effector) may occur
This channeling response is called
The INTEGRATIVE FUNCTION OF THE CNS
10
11. How the nervous system works?
Reflexes
Reflexes do not require conscious thought
They produce a consistent and predictable result
Are very quick, protecting body from painful stimuli, but also
maintaining homeostasis
Are integrated within the brain stem and spinal cord – higher
cortical centers may supress or exaggerate reflexes
11
12. How the nervous system works?
Reflex arc
Example of integrative function of the
CNS:
Reflex ARC
placing a finger over a candle flame (sensory
division)– will elicit immediate lift of the
hand (motor division) to escape from
nociceptive stimulus and minimize injury.
1. Receptor - detects a harmful stimulus
2. afferent nerve fibres conduct signal
from receptors to spinal cord
3. spinal cord – integrating center
4. efferent nerve fibres conduct signal to
muscles – effector (to make a desired
movement)
Reflex responses are automatic involuntary
movements – they ususally does not involve
brain in signal transduction – therefore they are
very quick, cause signal is without the delay routing
to the brain
12
13. Role of synapses in information processing
Synapse
is a junction point of one neuron to the next
Is site for controlling signal transmission
Contains vesicles of neurotransmitter – that
is released when signal is transducted
Determines the direction that the nerve
signal spreads from one neuron to the next
Some signals open/close synapse for
transmission
Blocking weak signals, allowing only strong
signals to pass – all or nothing rule
13
14. How the nervous system works?
Let us explain three main parts responsible for controlling motor function –
spinal cord, brain stem and cerebral cortex.
14
15. A) Motor function of the spinal cord
The spinal cord is not merely a conduit for sensory signals to the brain
(or from signals from brain back--)
Without a special neuronal system of the cord – even the simplest
movement cannot be performed properly (Motor control system in the
brain alone cannot evoke any purposeful muscle movement )
Brain has a role to control, „ cord activities“
Example:
there is no specific structure in the brain that causes a specific to-fro
movement of the legs (e.g. walking pattern).
Instead – circuits for these movements are in the cord and the brain
simply send a commant signals to set in motion walking process
15
16. Motor function of the spinal cord
reflex responses regulated by spinal cord
The flexor reflex – called also a withdrawal reflex – is spinal reflex in which a painful
stimulus applied to e.g. – a toe, results in a flexion, or withdrawal of the leg.
Positive supporting reaction – pressure on the footpad causes the limb to extend
against the pressure – limbs are able to support the weight of the body
Scratch reflex – is initiated by the itch and tickle sensation. Involves two functions –
position sense - exact localization of the itching spot , and to and fro scratching
movement
Cord righting reflex – when an animal is laid on its back, it will immediately turn into
standing position
But also evacuation of bladder and colon
Autonomic reflexes of the gut
16
17. B) Brain stem control of the motor function
Brain stem area predominantly controls
body posture and its visuospatial
orientation in space - by integrating
visual, sensory, vestibular and
somatosensory information
Brain stem is also responsible of
controlling goal – directed movement of
distal limb muscles – thus is important
for goal directed movement of arm and
hand
Also important for eye and head
movements
17
18. Reflex responses regulated by
brain stem
Corneal reflex – causes an eye blink in response to tactile stimulus
Pupillary light reflex – relfex that controls the diameter of pupilla in
response to incoming light
Cough – induced by mechanical or chemical irritating stimulus
Gag reflex – is a reflex contraction of the back of the throat evoked by
touching the roof of the mouth
Vestibulo-ocular reflex – (Doll;s eyes test) – is elicited by turning the
head of the experimental subject – eyes will move the opposite
direction of the movements – are fixed in still position
18
19. C) Cortical control of the motor function
Primary motor cortex and several premotor
areas project directly to the spinal cord -
through corticospinal tract – and also
regulates motor tracts that originate in the
brain stem
Premotor areas are responsible for planning
and coordinating complex sequences of
movement
Example:
Motions followed by visual or acoustic
instruction (dancing, doing exercise - zumba)
19
20. Cerebellum and Basal ganglia
In addition to previous are three hierarchical levels
two other parts also regulate planning and
execution of movement –
Cerebellum
Basal ganglia
They do not send significant signals to the spinal
cord, but they directly act on neurons in brain stem
20
21. Functions of the autonomous nervous
system – in shortcut
Autonomous nervous system is divided into sympathetic and
parasympathetic nervous system
Generally these two subsystems have the opposite effect on the same set
of organs
SYMPATHICS – active during awake state, stress , emergency
PARASYMPATHICS – associated with relax state and digestion
21
22. Conclusions
Nervous system provides the most of the control functions over the body
Most activities of the nervous system are initiated by sensory experience
CNS can be divided into two main divisions – sensory and motor division
Sensory division (receptors) send information to the CNS via afferent nerve fibres
Motor division (effectors) receive information from the CNS via efferent nerve
fibres
Reflex arc is the main functional unit of the CNS
Reflexes are unconscious responses of nervous system to sensory stimulation –
they are very quick, predictable and frequently are protecting body from painful
stimuli
22
23. references
Kandel, E. R., Schwartz, J. H. 1., & Jessell, T. M. (2000). Principles of neural science(4th
ed.). New York: McGraw-Hill, Health Professions Division.
Hall, John E.Guyton, Arthur C. (2011) Guyton and Hall textbook of medical
physiology /Philadelphia, PA : Saunders/Elsevier,.
https://www.wikipedia.org/
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