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Power Point
... If the neuron is the last in a series, it represents the final common pathway. Activity of that neuron will result from a cumulative effect of inhibitory and excitatory ...
... If the neuron is the last in a series, it represents the final common pathway. Activity of that neuron will result from a cumulative effect of inhibitory and excitatory ...
Chapter 39
... A. A synapse may occur between neurons or a neuron and a muscle cell 1. The neuron that ends at the synapse is the presynaptic neuron; the neuron that begins at a synapse is the postsynaptic neuron 2. Signals across synapses can be electrical or chemical a) Electrical synapses involve very close con ...
... A. A synapse may occur between neurons or a neuron and a muscle cell 1. The neuron that ends at the synapse is the presynaptic neuron; the neuron that begins at a synapse is the postsynaptic neuron 2. Signals across synapses can be electrical or chemical a) Electrical synapses involve very close con ...
Chapter 33
... Chemoreception Many animals produce species-specific compounds called pheromones. Pheremones released into the environment carry information about territory, social hierarchy, sex and reproductive state. ...
... Chemoreception Many animals produce species-specific compounds called pheromones. Pheremones released into the environment carry information about territory, social hierarchy, sex and reproductive state. ...
Ch 35 PowerPoint - Damien Rutkoski
... Largest part of the human brain Responsible for functions such as learning, intelligence and judgment Divided into a left and right hemisphere by a deep ...
... Largest part of the human brain Responsible for functions such as learning, intelligence and judgment Divided into a left and right hemisphere by a deep ...
week4am
... see depolarization (change from negative inside neuron to more positive) ◦ “threshold” – if a great enough depolarization occurs, an action potential will occur ◦ action potential – very quick – milliseconds Other terms – spike, firing, generating an AP ...
... see depolarization (change from negative inside neuron to more positive) ◦ “threshold” – if a great enough depolarization occurs, an action potential will occur ◦ action potential – very quick – milliseconds Other terms – spike, firing, generating an AP ...
Ch. 35 Nervous System edit
... Nervous system = controls and coordinates functions throughout the body and responds to internal and external stimuli B. Neurons = cells that transmit electrical signals (impulses) 1. 3 types of neurons = sensory, interneurons, motor 2. Parts of neuron a. cell body = contains nucleus and cytoplasm b ...
... Nervous system = controls and coordinates functions throughout the body and responds to internal and external stimuli B. Neurons = cells that transmit electrical signals (impulses) 1. 3 types of neurons = sensory, interneurons, motor 2. Parts of neuron a. cell body = contains nucleus and cytoplasm b ...
Nervous System Exam Review
... Know the 5 types of neuroglia cell --- where are they found, what do they do. Identify neurons by structural classification and functional classification. Explain how an impulse travels and the ions involved. Terms: action potential resting membrane potential repolarization depolarization sodium-pot ...
... Know the 5 types of neuroglia cell --- where are they found, what do they do. Identify neurons by structural classification and functional classification. Explain how an impulse travels and the ions involved. Terms: action potential resting membrane potential repolarization depolarization sodium-pot ...
The Nervous System
... How does the signal jump the gap? • Remember that a gap exists between neurons that the action potential cannot “jump”. They are just too far apart. When the signal reaches the end of the axon and wants to go to the next cell in line, it must change to a chemical messenger instead of an electrical ...
... How does the signal jump the gap? • Remember that a gap exists between neurons that the action potential cannot “jump”. They are just too far apart. When the signal reaches the end of the axon and wants to go to the next cell in line, it must change to a chemical messenger instead of an electrical ...
Exam 3 Review KEY
... ligaments, and connective tissue coverings of bones and muscles and are constantly “advising” the brain of one’s movements and body position. 23) Simple Receptors can be unencapsulated which have free dendritic nerve endings and respond chiefly to temperature and pain such as Merkel discs and hair f ...
... ligaments, and connective tissue coverings of bones and muscles and are constantly “advising” the brain of one’s movements and body position. 23) Simple Receptors can be unencapsulated which have free dendritic nerve endings and respond chiefly to temperature and pain such as Merkel discs and hair f ...
Characteristic for receptor cells
... (cranial nerve VII), back of tongue via glossopharyngeal nerve (IX), pharynx via vagus nerve (X) • After entering brainstem all gustatory afferents synapse in solitary nuclear complex of medulla. In primates two cortical areas known to be involved in taste processing, facial part of somatosensory ...
... (cranial nerve VII), back of tongue via glossopharyngeal nerve (IX), pharynx via vagus nerve (X) • After entering brainstem all gustatory afferents synapse in solitary nuclear complex of medulla. In primates two cortical areas known to be involved in taste processing, facial part of somatosensory ...
CHAPTER 12 AND 13 OUTLINE
... • • Causes the membrane to become more permeable to potassium and chloride ions • • Leaves the charge on the inner surface negative • • Reduces the postsynaptic neuron’s ability to produce an action potential Summation • • A single EPSP cannot induce an action potential • • EPSPs must summate tempo ...
... • • Causes the membrane to become more permeable to potassium and chloride ions • • Leaves the charge on the inner surface negative • • Reduces the postsynaptic neuron’s ability to produce an action potential Summation • • A single EPSP cannot induce an action potential • • EPSPs must summate tempo ...
Mechanisms of Perception: Hearing, Touch, Smell, Taste & Attention
... Your olfactory receptor neurons can be regenerated throughout your life Primary olfactory cortex: piriform cortex ...
... Your olfactory receptor neurons can be regenerated throughout your life Primary olfactory cortex: piriform cortex ...
The Nervous System Ch. 12 & 13
... back to -70 mV (resting potential). This is called repolarization. The reaching of the threshold potential causes voltage-gated K+ channels to open as well, but they are slow to respond. So they don’t open until the +30 mV potential is reached. Then K+ pours out and Na+ goes back ...
... back to -70 mV (resting potential). This is called repolarization. The reaching of the threshold potential causes voltage-gated K+ channels to open as well, but they are slow to respond. So they don’t open until the +30 mV potential is reached. Then K+ pours out and Na+ goes back ...
Types of neurons
... But new dendrites can grow Provides room for more connections to other neurons New connections are basis for learning ...
... But new dendrites can grow Provides room for more connections to other neurons New connections are basis for learning ...
Neurophysiology Neurotransmitter and Nervous System
... cell body are summed and the net effect is reflected in the rate at which the axon hillock generates action potentials ...
... cell body are summed and the net effect is reflected in the rate at which the axon hillock generates action potentials ...
The synapse.
... Advantages of the double-barrel electrode. The preceding slide was a drawing of the electrode tips. Real tips of the two barrels is not likely to be of the same length. The drawing at the right is more likely to occur. What this allows is to record differentially where the longer electrode is intra ...
... Advantages of the double-barrel electrode. The preceding slide was a drawing of the electrode tips. Real tips of the two barrels is not likely to be of the same length. The drawing at the right is more likely to occur. What this allows is to record differentially where the longer electrode is intra ...
Document
... Cell body integrates the information that arrives at its dendrites. – triggers impulses that are conducted away from the cell body along an axon Neurons are supported structurally and functionally by supporting cells (neuroglia). – Schwann cells – oligodendrocytes produce myelin sheath interrupt ...
... Cell body integrates the information that arrives at its dendrites. – triggers impulses that are conducted away from the cell body along an axon Neurons are supported structurally and functionally by supporting cells (neuroglia). – Schwann cells – oligodendrocytes produce myelin sheath interrupt ...
The Nervous System Worksheet
... d) In the CNS, impulses are passed from sensory neurones to motor neurons via relay neurons. Fill in the gaps in the following text using the words in the box below. i) ………………… neurones transmit messages from sense receptors like the eye or ………………. to the brain or spinal cord. ii) Relay neurones rel ...
... d) In the CNS, impulses are passed from sensory neurones to motor neurons via relay neurons. Fill in the gaps in the following text using the words in the box below. i) ………………… neurones transmit messages from sense receptors like the eye or ………………. to the brain or spinal cord. ii) Relay neurones rel ...
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.