'Synaptic cleft' diaporamas de présentation

Nervous System and the Senses

Nervous System and the Senses. Chapter 13 & 14. Importance of the Nervous System. Topic 13.1. What is the Nervous System?. Made up of the brain, spinal cord and emerging (body) nerves Senses (collect data about outside world) Maintenance of Homeostasis

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Muscle Physiology: The Actions of the Sarcomere.

Muscle Physiology: The Actions of the Sarcomere. Cardiac Muscle Characteristics Intercalated disks Striated Involuntary Located in heart. Skeletal Muscle. Characteristics Many nuclei per cell Striated Voluntary Located along bones. Smooth Muscle. Nonstriated Involuntary

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Nerve physiology

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Definition of a Pesticide

Definition of a Pesticide. Any substance intended for preventing, destroying, repelling, or mitigating any pest Insecticides Herbicides Fungicides. Pesticides are Not New. Fumigants Sulfur (1000 BC) Bordeaux mixture (CuSO 4 , lime (Ca(OH) 2 , H 2 O)- 1882) Insecticides

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Structure and gating mechanism of the acetylcholine receptor pore

Structure and gating mechanism of the acetylcholine receptor pore. Acetylcholine receptor. Important in transmitting messages from neuron to neuron Is a excitatory neurotransmitter Acetylcholine is stored in vesicles at the end of a neuron

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Learning Objectives

Learning Objectives. What is a synapse? Explain the role of calcium ions Explain the role of the neurotransmitter Explain the role of Acetylcholinesterase. The Basic Idea. Synapses are gaps between neurones Information is sent between neurones by chemical transmission

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Gated Ion Channels

Gated Ion Channels. A. Voltage-gated Na + channels. 5. generation of AP dependent only on Na +. repolarization is required before another AP can occur. K + efflux. Gated Ion Channels. A. Voltage-gated Na + channels. 6. positive feedback in upslope.

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Warm-Up

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Dose / Response

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Module 5 Communication, homeostasis & energy

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DETECTING AND RESPONDING TO SIGNALS

DETECTING AND RESPONDING TO SIGNALS. The communication systems. ENDOCRINE - Chemical messengers secreted by cells and carried via a transport system , finally diffusing into extra cellular fluid surrounding a target cell

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Chapter 7: Test Review Nervous System

Chapter 7: Test Review Nervous System. Explain afferent and efferent nervous system. Afferent- sensory receives and brings info. they have longer dendrites, only the ends can sense info; The body is not in the CNS (axon is); unipolar

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10.

2. 3. 1. MATCHING CHOICES: blood vessels bone endomysium epimysium mitochondria muscle fascicles muscle fiber myofibril nucleus perimysium sarcoplasm satellite cells tendon. 4. 5. . 6. 7. 7. 9. 9. 10. 11. 12. 13. 15. 16. 14. 17. 18. mitochondria myofibril

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Nervous System

Nervous System. Alex Wiemann. Function of Nervous System. C oordinates actions and transmits signals between parts of a body. Definition. Central nervous system brain and spinal cord integrate information from the periphery and coordinate activities P eripheral nervous system

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Motor Unit

Motor Unit. single motor neuron all muscle fibers controlled by motor neuron. 9-9. Neuromuscular Junction. site where axon and muscle fiber communicate motor neuron motor end plate synaptic cleft synaptic vesicles neurotransmitters. 9-8. Ion Channels.

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SEHS Topic 4.1 Neuromuscular Function

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STARTER : Answer the questions on your handout

STARTER : Answer the questions on your handout . Learning outcomes. Everyone should Define action potential, depolarization, repolarization, thresh hold and refractory period Most will: Outline how an action potential is propagated Some might:

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Peyote

Peyote. By Scott Beadles. Peyote is a small spineless cactus native to northern Mexico and the American southwest . The peyote cactus contains the power hallucinogenic drug mescaline. .

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Playing xbox

Tashia Pruitt. Playing xbox. How A Nerve Impulse Travels. Impulses are received from the dendrites attached to the cell body. The impulse then travels down the axon and into the axon terminals, which are attached to the dendrites of another cell and the process repeats.

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The Nervous System at Work

The Nervous System at Work. Lecture 2. The Nerve Impulse At Rest. The cell membrane of an non-stimulated neuron carries an electric charge. This charge is maintained by ions concentrated on either side of the membrane. The inside of the membrane is negative while the outside is positive.

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