Neurons and synapses.

Slides:

Advertisements

Similar presentations

Advertisements

Nerves, hormones and homeostasis

The Electrical Nature of Nerves

Ch 48: Nervous System Ch 48: Nervous System From Topic 6.5 Nature of science: Cooperation and collaboration between groups of scientists—biologists.

Topic 6: Human physiology (20 hours)

Figure 48.1 Overview of a vertebrate nervous system.

Neurons transmit the message, synapses modulate the message

Pages  /student_view0/chapter14/animatio n__the_nerve_impulse.html

Synaptic Signaling & The Action Potential

The Neuron An everyday (every second!) use of active transport

- The central nervous system consists of the brain and the spinal cord - sensory information is received by them and interpreted and then processed (responded.

The Nervous System Neuron –Cell body; Dendrites; Axon Three general groups of neurons –Sensory neurons (afferent or receptor) Receive the initial stimulus.

Nerve Impulse Every time you move a muscle & every time you think a thought, your nerve cells are hard at work. They are processing information: receiving.

April The Neuron & Nerve Impulses

8.2 Structures and Processes of the Nervous System

The Neuron An everyday (every second!) use of active transport.

Structures and Processes of the Nervous System – Part 2

Chapter 17 The nervous system.

Nerve Impulses.

2 Functional Properties of Neurons 1. Irritability Ability to respond to stimuli 2. Conductivity Ability to transmit an impulse.

Nervous System Notes Part 4. Neurons do not under go mitosis. Neurons are the largest cells in the human body. They can be up to 3 feet long. SOME MORE.

6.5 Neurons and Synapses U1: Neurons transmit electrical signals.

NEUROPHYSIOLOGY. OBJECTIVES: Describe resting membrane potential. Explain how action potentials are generated and propagated along nerves. Explain how.

Neuron structure Neurons all have same basic structure, a cell body with a number of dendrites and one long axon.

6.5 Neurons and synapses Essential idea: Neurons transmit the message, synapses modulate the message. The image shows a tiny segment of a human brain the.

Neurons and Synapses 6.5. The Nervous System Composed of cells called neurons. These are typically elongated cells that can carry electrical impulses.

6.5 Neurons and synapses Essential idea: Neurons transmit the message, synapses modulate the message. Nature of science: Cooperation and collaboration.

Human Anatomy / Physiology

6.5 - Neurons and synapses

Nervous System Notes Part 4

Upload 9.06 Nerve Impulse Notes to eBackpack

6.5 – Neurones and Synapses

6.5 – Neurones and Synapses

Neurons transmit the message, synapses modulate the message.

Synaptic Signaling & The Action Potential

Nerve Signals 11.2 (Image from:

Unit 2 Notes: Nerve Impulses

6.5 Neurons & Synapses.

Nerve cell membrane Electrochemical message is created by the movement of ions across the nerve cell membrane The resting nerve membrane has a electrical.

6.5 Neurons and Synapses Understanding:

Electrochemical Impulse

Neuron Function.

6.5 Neurons & Synapses.

Nerve Impulses.

6.5 Neurons and synapses Essential idea: Neurons transmit the message, synapses modulate the message. The image shows a tiny segment of a human brain the.

The Nerve Impulse.

6.5 Neurons and synapses.

Neurons and Synapses Topic 6.5.

6.5 Neurons & Synapses.

Cell Communication.

Action Potential 6.5.

2 Functional Properties of Neurons

Nerve Impulses.

Cell Communication: Neuron.

6.5 Neurons and synapses The image shows a tiny segment of a human brain the lines show neurons and the dots show synapses. The image is intended to illustrate.

6.5 Neurons & Synapses.

Neuron Cell Body Location

6.5 Neurons and Synapses Applications:

Nerve Impulses.

Neurons and Nerves Impulses

6.5 Neurons and synapses Essential idea: Neurons transmit the message, synapses modulate the message.

Notes Ch. 10c Nervous System 1

Neurons & the Action Potential

6.5 Neurons and synapses Essential idea: Neurons transmit the message, synapses modulate the message. The image shows a tiny segment of a human brain the.

6.5 Neurons and synapses Essential idea: Neurons transmit the message, synapses modulate the message. The image shows a tiny segment of a human brain the.

6.5 – Neurones and Synapses

Structure and Physiology of Neurons

Nerve Impulse (pp ).

How do nerves transmit signals and communicate?

Unit 2 Notes: Nerve Impulses

Presentation transcript:

Neurons and synapses

U 1 Neurons transmit electrical impulses U 1 Neurons transmit electrical impulses. U 2 The myelination of nerve fibres allows for salutatory conduction.

U 3 Neurons pump sodium and potassium ions across their membranes to generate a resting potential. Sodium- potassium pump maintains high Na+ outside and high K+ inside to maintain the resting membrane potential. Active transport of 3 Na+ out and 2 K+ in. (uses ATP)

U 4 An action potential consists of depolarization and repolarization of the neuron. U 9 A nerve impulse is only initiated if the threshold potential is reached.

U 5 Nerve impulses are action potentials propagated along the axons of neurons. U 6 Propagation of nerve impulses is the result of local currents that cause each successive part of the axon to reach the threshold potential.

U 7 Synapses are junctions between neurons and between neurons and receptors or effector cells.

A 1 Secretion and reabsorption of acetylcholine by neurons at synapses

S 1 Analysis of oscilloscope traces showing resting potentials and action potentials.

A 2 Blocking of synaptic transmission at cholinergic synapses in insects by binding of neonicotinoid pesticides Neonicotinoid use was linked in a range of studies to adverse ecological effects, including honey-bee colony collapse disorder(CCD) and loss of birds due to a reduction in insect populations.