Nervous and Endocrine Systems
... _____ – carries message away from cell body (can go to many other cells from 1 cell) Impulse – message carried by a neuron Receptors – in all sense organs Respond to _____ Sensory – _____ Interneurons – _____ Motor neurons – _____ Aim: 2 Parts of the nervous system: the CNS Synapse – ___ ...
... _____ – carries message away from cell body (can go to many other cells from 1 cell) Impulse – message carried by a neuron Receptors – in all sense organs Respond to _____ Sensory – _____ Interneurons – _____ Motor neurons – _____ Aim: 2 Parts of the nervous system: the CNS Synapse – ___ ...
Synapses and Neurotransmitters Notes
... A neuromuscular junction (NMJ) is a contact between a neuron and a muscle: it is like a synapse in that the action potential stops and the signal is carried by a chemical neurotransmitter released by the neuron. Neurotransmitters Are Made and Stored in the Pre-synaptic Terminal The end of the neuron ...
... A neuromuscular junction (NMJ) is a contact between a neuron and a muscle: it is like a synapse in that the action potential stops and the signal is carried by a chemical neurotransmitter released by the neuron. Neurotransmitters Are Made and Stored in the Pre-synaptic Terminal The end of the neuron ...
chapter_12 - The Anatomy Academy
... most abundant glial cells - form framework of CNS contribute to BBB and regulate composition of brain tissue fluid convert glucose to lactate to feed neurons secrete nerve growth factor promoting synapse formation electrical influence on synaptic signaling sclerosis – damaged neurons replace by hard ...
... most abundant glial cells - form framework of CNS contribute to BBB and regulate composition of brain tissue fluid convert glucose to lactate to feed neurons secrete nerve growth factor promoting synapse formation electrical influence on synaptic signaling sclerosis – damaged neurons replace by hard ...
Lecture 3
... (c) Relationship between lateral giant and motor giant axons as they make electrical synaptic contact near the third root of an abdominal ganglion in the crayfish ...
... (c) Relationship between lateral giant and motor giant axons as they make electrical synaptic contact near the third root of an abdominal ganglion in the crayfish ...
The Nervous System
... dendrites of the next or between a neuron and an effector synapse between neuron and muscle cell is called a neuromuscular junction or motor end plate ...
... dendrites of the next or between a neuron and an effector synapse between neuron and muscle cell is called a neuromuscular junction or motor end plate ...
Introduction to the Nervous System Guided Notes are masses of
... diameter = faster speed. Myelinated Axons conduct faster than unmyelinated ones. ...
... diameter = faster speed. Myelinated Axons conduct faster than unmyelinated ones. ...
The Nervous System
... • When the action potential reaches the end of an axon, the depolarization of the membrane causes gated channels to open and allow Ca++ to enter the cell. ...
... • When the action potential reaches the end of an axon, the depolarization of the membrane causes gated channels to open and allow Ca++ to enter the cell. ...
Neuronal signaling and synapses
... protrudes into the synaptic cleft; a transmembrane component, either: *an ion channel allowing passage of specific ion types OR a second messenger activator that extends into the cell cytoplasm & activates one or more substances within the postsynaptic neuron -somatic neuron axons are myelinated by ...
... protrudes into the synaptic cleft; a transmembrane component, either: *an ion channel allowing passage of specific ion types OR a second messenger activator that extends into the cell cytoplasm & activates one or more substances within the postsynaptic neuron -somatic neuron axons are myelinated by ...
Nervous system lecture 1
... – Graded potentials Summation – combination of these graded, local potentials at the axon hillock can bring about an action potential or inhibit the generation of the action potential. – Spatial: stimulation by many neurons at one time. – Temporal: increased numbers of impulses per minute. ...
... – Graded potentials Summation – combination of these graded, local potentials at the axon hillock can bring about an action potential or inhibit the generation of the action potential. – Spatial: stimulation by many neurons at one time. – Temporal: increased numbers of impulses per minute. ...
nervous tissue organization neurons neuroglia action potentials
... monoamines = epinepherine, norepinepherine, dopa, catecholamines histamines, serotonin, ATP ...
... monoamines = epinepherine, norepinepherine, dopa, catecholamines histamines, serotonin, ATP ...
Neurons & Transmission of Information
... •Two types of neurons: –A sensory neuron is a nerve cell that relays impulses from a receptor such as those in the eye or ear to a more central location in the nervous system. •Also known as _________________________ –A motor neuron is a nerve cell that sends impulses from a central area of the nerv ...
... •Two types of neurons: –A sensory neuron is a nerve cell that relays impulses from a receptor such as those in the eye or ear to a more central location in the nervous system. •Also known as _________________________ –A motor neuron is a nerve cell that sends impulses from a central area of the nerv ...
Nervous System I
... the neurotransmitters bind to certain proteins, called receptors, that are attached to the cell surface of the receiving cell. The binding of the transmitter to the receptor leads to the generation of a new electrical impulse. The gap has been bridged! ...
... the neurotransmitters bind to certain proteins, called receptors, that are attached to the cell surface of the receiving cell. The binding of the transmitter to the receptor leads to the generation of a new electrical impulse. The gap has been bridged! ...
Neurons Communicate by Neurotransmission
... Neurons communicate using both electrical signals and chemical messages. Information in the form of an electrical impulse is carried away from the neuron’s cell body along the axon of a presynaptic neuron toward the axon terminals. When the electrical signal reaches the terminal, it cannot cross the ...
... Neurons communicate using both electrical signals and chemical messages. Information in the form of an electrical impulse is carried away from the neuron’s cell body along the axon of a presynaptic neuron toward the axon terminals. When the electrical signal reaches the terminal, it cannot cross the ...
nervous system ppt
... humans and animals and can occur by inhalation, swallowing or absorption through eyes or mouth - prevents the proper operation of the chemical that controls nerve signals to the muscles. The chemical controlling nerve signals works like the body's “off switch” for muscles. When this “off switch” doe ...
... humans and animals and can occur by inhalation, swallowing or absorption through eyes or mouth - prevents the proper operation of the chemical that controls nerve signals to the muscles. The chemical controlling nerve signals works like the body's “off switch” for muscles. When this “off switch” doe ...
ACh - Perkins Science
... • Electrical synapses occur in smooth muscle and cardiac muscle, between some neurons of the brain, and between glial cells. • Stimulation causes phosphorylation or dephosphorylation of connexin proteins to open or close the channels ...
... • Electrical synapses occur in smooth muscle and cardiac muscle, between some neurons of the brain, and between glial cells. • Stimulation causes phosphorylation or dephosphorylation of connexin proteins to open or close the channels ...
neurotransmitter
... • There are dozens of different neurotransmitters (NT) in the neurons of the body. • NTs can be either excitatory or inhibitory • Each neuron generally synthesizes and releases a single type of neurotransmitter • The major neurotransmitters are indicated on the next slide. ...
... • There are dozens of different neurotransmitters (NT) in the neurons of the body. • NTs can be either excitatory or inhibitory • Each neuron generally synthesizes and releases a single type of neurotransmitter • The major neurotransmitters are indicated on the next slide. ...
Nervous System Cells
... • Many vertebrate peripheral neurons have an insulating sheath around the axon called myelin which is formed by Schwann cells. • Myelin sheathing allows these neurons to conduct nerve impulses faster than in non-myelinated neurons. ...
... • Many vertebrate peripheral neurons have an insulating sheath around the axon called myelin which is formed by Schwann cells. • Myelin sheathing allows these neurons to conduct nerve impulses faster than in non-myelinated neurons. ...
FUN FACTS ABOUT YOUR BRAIN - the human Central Nervous
... that collects information from other cells Dendritic spine: Small protrusions on dendrites phat increase surface area Nucleus: Central structure containing the chromosome and genes Nuclear membrane: Membrane surrounding the nucleus ...
... that collects information from other cells Dendritic spine: Small protrusions on dendrites phat increase surface area Nucleus: Central structure containing the chromosome and genes Nuclear membrane: Membrane surrounding the nucleus ...
FUN FACTS ABOUT YOUR BRAIN - the human Central Nervous
... that collects information from other cells Dendritic spine: Small protrusions on dendrites phat increase surface area Nucleus: Central structure containing the chromosome and genes Nuclear membrane: Membrane surrounding the nucleus ...
... that collects information from other cells Dendritic spine: Small protrusions on dendrites phat increase surface area Nucleus: Central structure containing the chromosome and genes Nuclear membrane: Membrane surrounding the nucleus ...
steps in nerve impulse transmission
... 1. Neurotransmitters (NT) are chemicals released from one neuron at the presynaptic nerve terminal. 2. NT then cross the synapse where they may be accepted by the next neuron at a specialized site called a receptor 3. The action that follows activation of a receptor site may be either depolarizati ...
... 1. Neurotransmitters (NT) are chemicals released from one neuron at the presynaptic nerve terminal. 2. NT then cross the synapse where they may be accepted by the next neuron at a specialized site called a receptor 3. The action that follows activation of a receptor site may be either depolarizati ...
Nervous System I - Laurel County Schools
... Central Nervous System and Peripheral Nervous System. Central Nervous System (CNS) composed of the brain and spinal cord Peripheral nervous system (PNS) composed of the nervous (cranial and spinal) that connects the CNS to other body parts. Together these systems provide three general functio ...
... Central Nervous System and Peripheral Nervous System. Central Nervous System (CNS) composed of the brain and spinal cord Peripheral nervous system (PNS) composed of the nervous (cranial and spinal) that connects the CNS to other body parts. Together these systems provide three general functio ...