The document summarizes the structure and function of the nervous system. It describes how the nervous system is divided into the central nervous system (CNS) and peripheral nervous system. The peripheral nervous system is further divided into the efferent and afferent divisions. The efferent division carries signals from the CNS to peripheral tissues and is divided into the somatic and autonomic systems. The autonomic system regulates vital functions unconsciously through the neurotransmitters acetylcholine and norepinephrine. Acetylcholine and norepinephrine are synthesized, stored, released, and terminated through specific mechanisms to control organs and physiological processes.
cholingeric and Anticholinesterase drug in detail .this ppt contains introduction ,mechanism of action ,pharmacological action ,uses and adverse effect of the drug
cholingeric and Anticholinesterase drug in detail .this ppt contains introduction ,mechanism of action ,pharmacological action ,uses and adverse effect of the drug
local anaesthesia is defined as a loss of sensation in a circumscribed area of the body caused by a depression of excitation in nerve endings
Or an inhibition of the conduction process in peripheral nerves; no loss of consciousness occurs
Local anesthetics interfere with the excitation process in the nerve membrane in one or more of the following ways:
1) Altering the basic resting potential of the nerve membrane
2) Altering the threshold potential (firing level)
3) Decreasing the rate of depolarization*
4) Prolonging the rate of repolarization
cholinergic receptors definetion and classifcation to 1-nicotinic and 2-muscarinic ...and their subtybes ..... then the sites and the mechanism ... and last the drugs effect
Introduction to CNS Pharmacology, with Anatomy and physiology of CNS, mode of neuro-transmission via action potential and role of major neurotransmitter in the brain with drug design pharmacology of CNS drugs.
This presentation contains drugs which blocks the adrenergic system e.g receptor blockers like alpha and beta receptor antagonists, adrenergic neuron blocking agents in details.various animated pictures are also included to make the presentation interesting as well as i have used various diagrams and tables to have better understanding of the topic. Thank you.
A PowerPoint presentation on "NSAIDS" suitable for reading by UG and PG Medical/Paramedical students of Pharmacology and Pharmacy sciences. This Ppt. is prepared for academic purpose only and already presented to my students in one of the theory classes of mine.
clinical pharmacology,clinical,injections,pharmacological,what is pharmacology,lethal injection drugs,pharmacology definition,Plus review of anatomy of the ANS
local anaesthesia is defined as a loss of sensation in a circumscribed area of the body caused by a depression of excitation in nerve endings
Or an inhibition of the conduction process in peripheral nerves; no loss of consciousness occurs
Local anesthetics interfere with the excitation process in the nerve membrane in one or more of the following ways:
1) Altering the basic resting potential of the nerve membrane
2) Altering the threshold potential (firing level)
3) Decreasing the rate of depolarization*
4) Prolonging the rate of repolarization
cholinergic receptors definetion and classifcation to 1-nicotinic and 2-muscarinic ...and their subtybes ..... then the sites and the mechanism ... and last the drugs effect
Introduction to CNS Pharmacology, with Anatomy and physiology of CNS, mode of neuro-transmission via action potential and role of major neurotransmitter in the brain with drug design pharmacology of CNS drugs.
This presentation contains drugs which blocks the adrenergic system e.g receptor blockers like alpha and beta receptor antagonists, adrenergic neuron blocking agents in details.various animated pictures are also included to make the presentation interesting as well as i have used various diagrams and tables to have better understanding of the topic. Thank you.
A PowerPoint presentation on "NSAIDS" suitable for reading by UG and PG Medical/Paramedical students of Pharmacology and Pharmacy sciences. This Ppt. is prepared for academic purpose only and already presented to my students in one of the theory classes of mine.
clinical pharmacology,clinical,injections,pharmacological,what is pharmacology,lethal injection drugs,pharmacology definition,Plus review of anatomy of the ANS
details on Nervous system, Cholinergic System (acetylcholine) and Drugsjamal707
The nervous system detects and responds to changesinside and outside the body. Together with the endocrinesystem it controls important aspects of body function andmaintains homeostasis. Nervous system stimulation providesan immediate response while endocrine activity is, In the main, slower and more prolonged.
Acetylcholine -
Acetylcholine is an organic chemical that functions in the brain and body of many types of animals as a neurotransmitter—a chemical message released by nerve cells to send signals to other cells, such as neurons, muscle cells and gland cells.
pharmacology,clinical pharmacology,clinical,injections,pharmacological,what is pharmacology,lethal injection drugs,pharmacology definition,Plus review of anatomy of the ANS
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
2. The nervous system is divided into two anatomical divisions:
1. The central nervous system (CNS), which is composed of the
brain and spinal cord,
2. The peripheral nervous system, which includes neurons
located outside the brain and spinal cord that is, any nerves
that enter or leave the CNS.
3.
4.
5. The peripheral nervous system is subdivided into the
1. EFFERENT DIVISION, the neurons of which carry signals
away from the brain and spinal cord to the peripheral tissues,
2. AFFERENT DIVISION, the neurons of which bring
information from the periphery to the CNS.
6.
7. • The efferent portion of the peripheral nervous system
is further divided into two major functional
subdivisions, the somatic and the autonomic systems.
• The SOMATIC efferent neurons are involved in the
voluntary control of functions such as contraction of
the skeletal muscles essential for locomotion.
• On the other hand, the AUTONOMIC system
regulates the everyday requirements of vital bodily
functions without the conscious participation of the
mind.
8. • All neurons are distinct anatomic units, and no structural
continuity exists between most neurons.
• Communication between nerve cells and between nerve
cells and effector organs occurs through the release of
specific chemical signals, called neurotransmitters, from
the nerve terminals. This release is triggered by the arrival
of the action potential at the nerve ending, leading to
depolarization.
• The neurotransmitters rapidly diffuse across the synaptic
cleft or space (synapse) between neurons and combine
with specific receptors on the postsynaptic (target) cell.
9. • An important traditional classification of autonomic nerves is
based on the primary transmitter molecules—acetylcholine or
norepinephrine—released from their terminals and varicosities.
A large number of peripheral ANS fibers synthesize and release
acetylcholine; they are cholinergic fibers; that is, they work by
releasing acetylcholine.
10. • Acetylcholine (ACh) is the primary transmitter in all
autonomic ganglia and at the synapses between
parasympathetic postganglionic neurons and their
effector cells.
• It is the transmitter at postganglionic sympathetic
neurons to the thermoregulatory sweat glands.
• It is also the primary transmitter at the somatic (voluntary)
skeletal muscle neuromuscular junction.
11. • 1. Synthesis and storage—Acetylcholine is synthesized
in the nerve terminal by the enzyme choline
acetyltransferase (ChAT) from acetyl-CoA (produced in
mitochondria) and choline (transported across the cell
membrane).
• Acetylcholine is actively transported into its vesicles for
storage by the vesicle-associated transporter, VAT. This
process can be inhibited by another research drug,
vesamicol.
12. • Release of acetylcholine—Release of transmitter stores
from vesicles in the nerve ending requires the entry of
calcium through calcium channels and triggering of an
interaction between SNARE (soluble N-ethylmaleimide-
sensitive-factor attachment protein receptor) proteins.
13. • Termination of action of acetylcholine—The action of
acetylcholine in the synapse is normally terminated by
metabolism to acetate and choline by the enzyme
acetylcholinesterase in the synaptic cleft.
14.
15. • Norepinephrine (NE) is the primary transmitter at the
sympathetic postganglionic neuron-effector cell synapses
in most tissues.
• Dopamine may be a vasodilator transmitter in renal blood
vessels, but norepinephrine is a vasoconstrictor of these
vessels.
16. • Synthesis and storage—After transport across the cell
membrane, tyrosine is hydroxylated by tyrosine hydroxylase
to DOPA , decarboxylated to dopamine, and hydroxylated to
norepinephrine.
• Tyrosine hydroxylase can be inhibited by metyrosine.
• Norepinephrine and dopamine are transported into vesicles by
the vesicular monoamine transporter (VMAT) and are stored
there.
• Monoamine oxidase (MAO) inactivates a portion of the
dopamine and norepinephrine in the cytoplasm. Therefore,
MAO inhibitors may increase the stores of these transmitters
.
• VMAT can be inhibited by reserpine, resulting in depletion of
transmitter stores.
17.
18. • Release and termination of action—Dopamine and
norepinephrine are released from their nerve endings by
the same calcium-dependent mechanism responsible for
acetylcholine release.
• Lack receptors for botulinum.
19. • Termination occurs via diffusion and reuptake
(especially uptake-1, by the norepinephrine transporter,
NET, or the dopamine transporter, DAT) reduce their
concentration in the synaptic cleft and stop their action.
• Outside the cleft, these transmitters can be
metabolized—by MAO and catechol-O-
methyltransferase (COMT)—and the products of these
enzymatic reactions are excreted.
20. • Drugs that block norepinephrine synthesis (eg,
metyrosine) or catecholamine storage (eg, reserpine) or
release (eg, guanethidine) were used in treatment of
several diseases (eg, hypertension) because they block
sympathetic but not parasympathetic functions.
25. • These sites include the CNS centers; the ganglia; the
postganglionic nerve terminals; the effector cell
receptors; and the mechanisms responsible for
transmitter synthesis, storage, release, and termination of
action
26. • A. Local Integration: Mainly provided through
mechanism of negative feedback.
• This effect is mediated by α2 receptors located on the
presynaptic nerve membrane.
• B. Systemic Reflexes: System reflexes regulate blood
pressure, gastrointestinal motility, bladder tone, airway
smooth muscle, and other processes.
• The control of blood pressure—by the baroreceptor
neural reflex and the renin-angiotensin-aldosterone
hormonal response.
27. • C. Complex Organ Control: The Eye
• The pupil, is under reciprocal control by the SANS (via α
receptors on the pupillary dilator muscle) and the PANS
(via muscarinic receptors on the pupillary constrictor).
• The ciliary muscle, which controls accommodation, is
under primary control of muscarinic receptors innervated
by the PANS, with insignificant contributions from the
SANS.