![CNS Brain * Cerebrum * Cerebellum * Brain Stem * Diencephalon](http://s1.studyres.com/store/data/001550453_1-c82143b395929423790f5cc5fdb86802-300x300.png)
CNS Brain * Cerebrum * Cerebellum * Brain Stem * Diencephalon
... Maintains body balance, coordinates voluntary muscles, makes muscular movements graceful and smooth Midbrain Eye and facial movements Medulla Oblongata Regulates respiration and heart beat Hypothalamus Integration & command center for autonomic (visceral) functions; involved in emotions Brainstem Co ...
... Maintains body balance, coordinates voluntary muscles, makes muscular movements graceful and smooth Midbrain Eye and facial movements Medulla Oblongata Regulates respiration and heart beat Hypothalamus Integration & command center for autonomic (visceral) functions; involved in emotions Brainstem Co ...
Na + - Tufts
... • How do you think Novocain works??? – Novocain stops our neurons from signaling electrically. – But how do our neurons signal electrically??? ...
... • How do you think Novocain works??? – Novocain stops our neurons from signaling electrically. – But how do our neurons signal electrically??? ...
Organization of Nervous System
... transmit information to another neuron are called neurotransmitters. There are several kinds of neurotransmitters, which we will discuss in later lectures. ...
... transmit information to another neuron are called neurotransmitters. There are several kinds of neurotransmitters, which we will discuss in later lectures. ...
You Light Up My Life
... to the brain’s visual cortex, which has several visual fields sensitive to direction, movement, color, and so on; here is where final interpretation of the signals is made to produce an organized sense of sight. ...
... to the brain’s visual cortex, which has several visual fields sensitive to direction, movement, color, and so on; here is where final interpretation of the signals is made to produce an organized sense of sight. ...
REVIEW THE NERVOUS SYSTEM
... 33. A major subdivision of the nervous system that serves as the communication lines, linking all parts of the body to the CNS.__________________________________ nervous system. 34. The ________________________________________ nervous system does not come in contact with the environment. 35. The aut ...
... 33. A major subdivision of the nervous system that serves as the communication lines, linking all parts of the body to the CNS.__________________________________ nervous system. 34. The ________________________________________ nervous system does not come in contact with the environment. 35. The aut ...
Chapters 13, and 14
... The action potential occurs in each successive portion of an axon. A refractory period ensures that the action potential will not move backwards. In myelinated fibers the action potential only occurs at the nodes of Ranvier. This is called saltatory conduction. The Synapse Transmission of the nerve ...
... The action potential occurs in each successive portion of an axon. A refractory period ensures that the action potential will not move backwards. In myelinated fibers the action potential only occurs at the nodes of Ranvier. This is called saltatory conduction. The Synapse Transmission of the nerve ...
Key Transmitters - Sinauer Associates
... they have a much higher permeability to Ca+ ions than most AMPA channels (see Chapter 11). Their voltage-dependence means that they act as coincidence detectors, only allowing current to pass when the neuron is simultaneously depolarized by, for example, highfrequency activation of AMPA channels, on ...
... they have a much higher permeability to Ca+ ions than most AMPA channels (see Chapter 11). Their voltage-dependence means that they act as coincidence detectors, only allowing current to pass when the neuron is simultaneously depolarized by, for example, highfrequency activation of AMPA channels, on ...
The biological Approach
... Neurotransmitters • Neurotransmitters are brain chemicals released from synaptic vesicles that relay signals across the synapse from one neuron to another. • Neurotransmitters can be broadly divided into those that perform an excitatory functions and those that perform an inhibitory function. • For ...
... Neurotransmitters • Neurotransmitters are brain chemicals released from synaptic vesicles that relay signals across the synapse from one neuron to another. • Neurotransmitters can be broadly divided into those that perform an excitatory functions and those that perform an inhibitory function. • For ...
THE NERVOUS SYSTEM
... Action potentials occur whenever a depolarization increases the membrane voltage to a particular value, called the threshold, for many mammalian neurons this being -55mV o Action potentials have a constant magnitude and can regenerate in adjacent regions of the membrane o Action potentials can aris ...
... Action potentials occur whenever a depolarization increases the membrane voltage to a particular value, called the threshold, for many mammalian neurons this being -55mV o Action potentials have a constant magnitude and can regenerate in adjacent regions of the membrane o Action potentials can aris ...
File
... communication allowing the animal to respond to internal and external stimuli • Nervous system (Rapid responses) • Endocrine system (Slower responses) There are 2 parts to the nervous system: ...
... communication allowing the animal to respond to internal and external stimuli • Nervous system (Rapid responses) • Endocrine system (Slower responses) There are 2 parts to the nervous system: ...
Chapter 5: sensation PAGE 1 Table 1: Sensing the World: Some
... are more sensitive to light than are the color sensitive cones, which is why the world looks colorless at night. The fovea is the retina’s area of central focus. The fovea contains only cones. Many cones have their own bipolar cells to help relay their individual messages to the cortex, which devote ...
... are more sensitive to light than are the color sensitive cones, which is why the world looks colorless at night. The fovea is the retina’s area of central focus. The fovea contains only cones. Many cones have their own bipolar cells to help relay their individual messages to the cortex, which devote ...
Nerve activates contraction
... • Axon endings are called synaptic terminals. • They contain neurotransmitters which conduct a signal across a synapse. • A synapse is the junction between a presynaptic and postsynaptic neuron. Synapses can be electrical or chemical. Ions carry information in electrical synapses. In chemical synap ...
... • Axon endings are called synaptic terminals. • They contain neurotransmitters which conduct a signal across a synapse. • A synapse is the junction between a presynaptic and postsynaptic neuron. Synapses can be electrical or chemical. Ions carry information in electrical synapses. In chemical synap ...
Neurotoxicity
... General protein synthesis impairment may have an effect not only on the neurotransmitters production, but also the production of important enzymes which break down neurotransmitters when they are no longer needed. ...
... General protein synthesis impairment may have an effect not only on the neurotransmitters production, but also the production of important enzymes which break down neurotransmitters when they are no longer needed. ...
Neurons and action potential
... When you learn, messages travel from one neuron to another, over and over making connections between neurons. ...
... When you learn, messages travel from one neuron to another, over and over making connections between neurons. ...
File
... • The Nervous System is a network of specialized cells (called “neurons”) that carry messages throughout the body. • [The study of these neurons is called Neurology ______________ ...
... • The Nervous System is a network of specialized cells (called “neurons”) that carry messages throughout the body. • [The study of these neurons is called Neurology ______________ ...
Brain Presentation1
... Neural Impulse within the Neuron • Electrical part of the electro-chemical impulse • All or None Action Potential- There is either enough stimulation or the neuron doesn’t fire • Action Potential- Enough stimulation received from another cell that causes the axon membrane to become permeable that ...
... Neural Impulse within the Neuron • Electrical part of the electro-chemical impulse • All or None Action Potential- There is either enough stimulation or the neuron doesn’t fire • Action Potential- Enough stimulation received from another cell that causes the axon membrane to become permeable that ...
Note
... The diagonal lines show where the data points would be if the information provided by the neurons were fully divided between the two variables on the axes. The data points lie below the lines because not all of the response can be used, i.e. one response variable can’t be exactly split between two s ...
... The diagonal lines show where the data points would be if the information provided by the neurons were fully divided between the two variables on the axes. The data points lie below the lines because not all of the response can be used, i.e. one response variable can’t be exactly split between two s ...
nerve impulse
... concentration of ions across their membranes Membrane potential: slight excess of positively charged ions on the outside of the membrane and slight deficiency of positively charged ions on the inside of the membrane (Figure 12-14) Difference in electrical charge is called potential because it is a ...
... concentration of ions across their membranes Membrane potential: slight excess of positively charged ions on the outside of the membrane and slight deficiency of positively charged ions on the inside of the membrane (Figure 12-14) Difference in electrical charge is called potential because it is a ...
Senses - Peoria Public Schools
... • ciliary muscles contract to view a close object and relax to view a distant object • The lens is a clear membraneous structure • light passes through • cataracts form when the lens becomes cloudy and clear images can’t be focused on the retina • Iris controls amount of light entering pupil ...
... • ciliary muscles contract to view a close object and relax to view a distant object • The lens is a clear membraneous structure • light passes through • cataracts form when the lens becomes cloudy and clear images can’t be focused on the retina • Iris controls amount of light entering pupil ...
LESSON 3.3 WORKBOOK
... Note that these channels are different from the voltage-gated sodium and calcium channels we talked about on the axon and the presynaptic terminal because they are stimulated to open by a neurotransmitter binding to its receptor, and not by a change in voltage. When channels open that are permeable ...
... Note that these channels are different from the voltage-gated sodium and calcium channels we talked about on the axon and the presynaptic terminal because they are stimulated to open by a neurotransmitter binding to its receptor, and not by a change in voltage. When channels open that are permeable ...
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.