- Describe the roles of the different types of glial cells
... - Soma – cell body of a neuron. This is where the DNA is stored and proteins are manufactured. Can have some axons/dendrites synapsing onto the cell body where total signals are then added and this determines whether the signal will be sent down this axon too – only if it reaches over the threshold ...
... - Soma – cell body of a neuron. This is where the DNA is stored and proteins are manufactured. Can have some axons/dendrites synapsing onto the cell body where total signals are then added and this determines whether the signal will be sent down this axon too – only if it reaches over the threshold ...
Nervous and Endocrine System
... Dendrites – receive the nerve impulse Nucleus – controls all activities of the cell Axon Terminals release neurotransmitters into the synapse Nerve impulses travel from the dendrite through the cell to the axon terminal (one direction only) Nerve impulses travel through the cell as electrica ...
... Dendrites – receive the nerve impulse Nucleus – controls all activities of the cell Axon Terminals release neurotransmitters into the synapse Nerve impulses travel from the dendrite through the cell to the axon terminal (one direction only) Nerve impulses travel through the cell as electrica ...
Chapter 2, section 2
... • Cycle of events in which information from one step controls or affects a previous ...
... • Cycle of events in which information from one step controls or affects a previous ...
Biological Basis of Behavior
... • Seratonin is the brain chemical that is associated with moods, concentration and attention Thinking about the information in the last slides, explain what happens in the brain with people who are depressed ...
... • Seratonin is the brain chemical that is associated with moods, concentration and attention Thinking about the information in the last slides, explain what happens in the brain with people who are depressed ...
Outline10 Action Potl
... dendrites located at receptors, axons in nerves, cell bodies in ganglia outside the CNS 2. motor (efferent) neurons - output from CNS to effectors (muscles, glands) cell bodies and dendrites in the CNS, axons in nerves 3. interneurons - located entirely within the CNS; most abundant and diverse type ...
... dendrites located at receptors, axons in nerves, cell bodies in ganglia outside the CNS 2. motor (efferent) neurons - output from CNS to effectors (muscles, glands) cell bodies and dendrites in the CNS, axons in nerves 3. interneurons - located entirely within the CNS; most abundant and diverse type ...
HONORS BIOLOGY Chapter 28 Nervous Systems
... Synapses are junctions where signals are transmitted between Two neurons or between neurons and effector cells Electrical synapses ...
... Synapses are junctions where signals are transmitted between Two neurons or between neurons and effector cells Electrical synapses ...
Neurology - wsscience
... Chemical synapses differ from electric synapses because chemical synapses: Contain integral proteins Involve a neurotransmitter Involve direct physical contact between cells Propagate action potentials quickly and efficiently ...
... Chemical synapses differ from electric synapses because chemical synapses: Contain integral proteins Involve a neurotransmitter Involve direct physical contact between cells Propagate action potentials quickly and efficiently ...
The Nervous System: Neural Tissue
... __________________axon is _______ mV. (The inside is negative relative to the outside) C. The Acton Potential 1. The transmission of an impulse down the length of an axon is called the __________________ __________________. 2. A stimulus is applied to a __________________ membrane, which causes the ...
... __________________axon is _______ mV. (The inside is negative relative to the outside) C. The Acton Potential 1. The transmission of an impulse down the length of an axon is called the __________________ __________________. 2. A stimulus is applied to a __________________ membrane, which causes the ...
Afferent (Sensory) Division Part 1
... • PNS – all neural structures outside the brain and spinal cord • Includes sensory receptors, peripheral nerves, associated ganglia, and motor ...
... • PNS – all neural structures outside the brain and spinal cord • Includes sensory receptors, peripheral nerves, associated ganglia, and motor ...
HONORS BIOLOGY Chapter 28 Nervous Systems
... Are self-propagated in a one-way chain reaction along a neuron ...
... Are self-propagated in a one-way chain reaction along a neuron ...
Introduction to the Nervous System Guided Notes are masses of
... Introduction to the Nervous System Guided Notes 1. _________________ are masses of nerve cells that transmit information. All neurons contain three main ...
... Introduction to the Nervous System Guided Notes 1. _________________ are masses of nerve cells that transmit information. All neurons contain three main ...
Chapter 10: Sensory Physiology
... Vibrations in perilymph are transferred across the basilar membrane to the cochlear duct Vibrations in endolymph stimulate sets of receptor cells Receptor (hair) cells release NT which stimulates nearby sensory neuron Impulse to auditory cortex of temporal lobe via Cochlear nerve to Vestibulocochlea ...
... Vibrations in perilymph are transferred across the basilar membrane to the cochlear duct Vibrations in endolymph stimulate sets of receptor cells Receptor (hair) cells release NT which stimulates nearby sensory neuron Impulse to auditory cortex of temporal lobe via Cochlear nerve to Vestibulocochlea ...
File
... is referred to as the “all or none” response Increasing neuronal stimulation beyond a critical level will not result in an increased response Neurons response to increased stimulation by increasing the frequency of firing, not the intensity at which they fire. The Threshold level is the minimu ...
... is referred to as the “all or none” response Increasing neuronal stimulation beyond a critical level will not result in an increased response Neurons response to increased stimulation by increasing the frequency of firing, not the intensity at which they fire. The Threshold level is the minimu ...
The Nervous System: Neural Tissue
... 1. Unipolar – have a single process that emerges from the cell body. Functions mainly as an axon for the PNS. 2. Bipolar – have two processes- one axon, one dendrite. Found in the retina of the eye and the olfactory mucosa. 3. Multipolar – have many (at least 2) dendrites and one axon. Most common n ...
... 1. Unipolar – have a single process that emerges from the cell body. Functions mainly as an axon for the PNS. 2. Bipolar – have two processes- one axon, one dendrite. Found in the retina of the eye and the olfactory mucosa. 3. Multipolar – have many (at least 2) dendrites and one axon. Most common n ...
Nervous System - Creston High School
... When an action potential reaches the end of an axon, neurotransmitters are stimulated to flood the gap and bond to ion channels on the post synaptic neuron. This causes an action potential to be produced. ...
... When an action potential reaches the end of an axon, neurotransmitters are stimulated to flood the gap and bond to ion channels on the post synaptic neuron. This causes an action potential to be produced. ...
The Nervous System
... Original stimulation must be above threshold level in order for an impulse to be started (all or nothing) Figure 48.10 Propagation of the action potential Figure 48.11 Saltatory conduction ...
... Original stimulation must be above threshold level in order for an impulse to be started (all or nothing) Figure 48.10 Propagation of the action potential Figure 48.11 Saltatory conduction ...
Ch 11 Part 2 - Groch Biology
... 5. Also called the nerve impulse. _____ 6. Period when a neuron cannot be restimulated because it's sodium gates are open. _____ 7. Mechanism by which ATP is used to move sodium ions out of the cell and potassium ions into the cell; completely restores and maintains the resting conditions of the neu ...
... 5. Also called the nerve impulse. _____ 6. Period when a neuron cannot be restimulated because it's sodium gates are open. _____ 7. Mechanism by which ATP is used to move sodium ions out of the cell and potassium ions into the cell; completely restores and maintains the resting conditions of the neu ...
Sending Signals Notes
... • Neurons that transmit impulses to other neurons DO NOT actually touch one another. The Small Gap or Space between the axon of one neuron and the dendrites of the next neuron is called the Synapse. • One importance of the presence of Synapses is that they ensures one-way transmission of impulses in ...
... • Neurons that transmit impulses to other neurons DO NOT actually touch one another. The Small Gap or Space between the axon of one neuron and the dendrites of the next neuron is called the Synapse. • One importance of the presence of Synapses is that they ensures one-way transmission of impulses in ...
Nervous System Period 7 - Mercer Island School District
... there is a sudden change in the voltage across the wall of the axon, caused by the movement of ions in and out of the neuron The speed of nerve impulses varies enormously in different types of neuron. The fastest travel at about 250 mph Neurons that need to transmit electrical signals quickly are sh ...
... there is a sudden change in the voltage across the wall of the axon, caused by the movement of ions in and out of the neuron The speed of nerve impulses varies enormously in different types of neuron. The fastest travel at about 250 mph Neurons that need to transmit electrical signals quickly are sh ...
Stimulus (physiology)
In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.