Biopsychology 2012 – sec 002
... - axons: part of the neuron that transmits information to other neurons; - myelin sheath: surrounds axons and provides electrical “insulation”; - nodes of Ranvier: small area on axons devoid of myelin sheath; - presynaptic terminal: area of neuron where neurotransmitter is stored and released by act ...
... - axons: part of the neuron that transmits information to other neurons; - myelin sheath: surrounds axons and provides electrical “insulation”; - nodes of Ranvier: small area on axons devoid of myelin sheath; - presynaptic terminal: area of neuron where neurotransmitter is stored and released by act ...
Visual Field - Warren`s Science Page
... Receptor axons lead into one of two olfactory bulbs In these small brain structures, axons synapse with cells that sort out scent Then, information flows along olfactory tract to cerebrum, where further processed ...
... Receptor axons lead into one of two olfactory bulbs In these small brain structures, axons synapse with cells that sort out scent Then, information flows along olfactory tract to cerebrum, where further processed ...
nervous system
... Specialized immune cells that act as the macrophages of the CNS Spider-like phagocytes dispose of ...
... Specialized immune cells that act as the macrophages of the CNS Spider-like phagocytes dispose of ...
Microscopic Nervous System and Reflexes with answers
... their cell bodies; only one fiber is an axon and the rest are dendrites; neurons which lie within the brain or spinal ...
... their cell bodies; only one fiber is an axon and the rest are dendrites; neurons which lie within the brain or spinal ...
Textbook PowerPoint
... Relative Refractory Period Neuron would only respond to very strong impulse ...
... Relative Refractory Period Neuron would only respond to very strong impulse ...
The Nervous System
... or electrical signal. Electrical synapses cross gap junctions, such as in cardiac and smooth muscle. Neurotransmitters are used in nervous system synapses. They are released from the axon. Bouton / knobs / presynaptic terminal Neuromodulators – can influence an action potential ...
... or electrical signal. Electrical synapses cross gap junctions, such as in cardiac and smooth muscle. Neurotransmitters are used in nervous system synapses. They are released from the axon. Bouton / knobs / presynaptic terminal Neuromodulators – can influence an action potential ...
Sensory perception
... increase in AP frequency is proportional to increased length of muscle spindle AP frequency rises only to a maximum of ~ 50/sec during stretch are tonic receptors, ie, only slow adaption in response to stretch of muscle and ...
... increase in AP frequency is proportional to increased length of muscle spindle AP frequency rises only to a maximum of ~ 50/sec during stretch are tonic receptors, ie, only slow adaption in response to stretch of muscle and ...
PART 1: TRUE OR FALSE (1 point each)
... 5. Movement of only a few sodium and potassium ions across a neuron's cell membrane is sufficient to cause an action potential. 6. The blind spot in your visual field is caused by the axons of the ganglion cells forming the optic nerve. 7. Amines, amino acids, purines, and peptides are all chemical ...
... 5. Movement of only a few sodium and potassium ions across a neuron's cell membrane is sufficient to cause an action potential. 6. The blind spot in your visual field is caused by the axons of the ganglion cells forming the optic nerve. 7. Amines, amino acids, purines, and peptides are all chemical ...
Nervous Tissue
... – In the spinal cord = gray matter forms an H-shaped inner core surrounded by white matter – In the brain = a thin outer shell of gray matter covers the surface & is found in clusters called nuclei inside the CNS ...
... – In the spinal cord = gray matter forms an H-shaped inner core surrounded by white matter – In the brain = a thin outer shell of gray matter covers the surface & is found in clusters called nuclei inside the CNS ...
nervous system
... Actions/Effects: LSD alters the action of the neurotransmitters serotonin, norepinephrine, and dopamine, triggering extreme changes in brain function. Physical effects include increased body temperature, heart rate, and blood pressure. Psychological effects ...
... Actions/Effects: LSD alters the action of the neurotransmitters serotonin, norepinephrine, and dopamine, triggering extreme changes in brain function. Physical effects include increased body temperature, heart rate, and blood pressure. Psychological effects ...
Chapter 8 - Nervous Pre-Test
... A. if the membrane potential reaches a threshold value. B. when negative proteins and ions rapidly enter the cell. C. when the inside of the cell becomes negative compared to the outside. D. when there is repolarization. E. All of these are correct. ...
... A. if the membrane potential reaches a threshold value. B. when negative proteins and ions rapidly enter the cell. C. when the inside of the cell becomes negative compared to the outside. D. when there is repolarization. E. All of these are correct. ...
Nervous System 1
... Your Nervous System • The nervous system control your actions. It coordinates different parts of your body so that they work together and are able to bring about the correct responses • Your nervous system coordinates your muscles, so that you can walk, run, write, read etc • When you smile the ner ...
... Your Nervous System • The nervous system control your actions. It coordinates different parts of your body so that they work together and are able to bring about the correct responses • Your nervous system coordinates your muscles, so that you can walk, run, write, read etc • When you smile the ner ...
Nervous System - Westminster College
... sodium channels open up allowing in even more positive charge – positive feedback loop. Voltage changes from -70 mV to +40 mV. At +40 mV sodium channels close – negative feedback loop ...
... sodium channels open up allowing in even more positive charge – positive feedback loop. Voltage changes from -70 mV to +40 mV. At +40 mV sodium channels close – negative feedback loop ...
Unit 8 Nervous System
... Fluid-filled space separating the presynaptic and postsynaptic neurons Prevents nerve impulses from directly passing from one neuron to the next Transmission across the synaptic cleft Is a chemical event that involves the release, diffusion, and binding of neurotransmitters that ensures unid ...
... Fluid-filled space separating the presynaptic and postsynaptic neurons Prevents nerve impulses from directly passing from one neuron to the next Transmission across the synaptic cleft Is a chemical event that involves the release, diffusion, and binding of neurotransmitters that ensures unid ...
Animal Form and Function are Correlated at all levels of organization
... -Tissue are groups of cells that have a common structure and function -Tissues are further organized into functional units called organs -Groups of organs that work together make up organ systems Ex.: The digestive, circulatory, and excretory -For animal survival, tissues, organs, and organ systems ...
... -Tissue are groups of cells that have a common structure and function -Tissues are further organized into functional units called organs -Groups of organs that work together make up organ systems Ex.: The digestive, circulatory, and excretory -For animal survival, tissues, organs, and organ systems ...
Nervous
... The depolarization of the action potential spreads to the neighboring region of the membrane, re-initiating the action potential there. To the left of this region, the membrane is repolarizing as K+ flows outward. ...
... The depolarization of the action potential spreads to the neighboring region of the membrane, re-initiating the action potential there. To the left of this region, the membrane is repolarizing as K+ flows outward. ...
Nociceptive sensation. Somatic sensory analyzer
... Nociceptive sensation. Somatic sensory analyzer ...
... Nociceptive sensation. Somatic sensory analyzer ...
Central Nervous System PPT
... of nerves joins the Cerebellum Pons out motor signals. left all and right domes of the heart rate, temperature, cerebrum. and sleep. waterworks, ...
... of nerves joins the Cerebellum Pons out motor signals. left all and right domes of the heart rate, temperature, cerebrum. and sleep. waterworks, ...
Objectives: The student shall know the facts, understand the
... Modalities subserved Primary sensory cortex location and organization PAIN Modality Endings and characteristics Adequate stimuli Stimulus-response mechanisms Subtypes: "fast" and "slow" pain Localization acuity Referred pain Pain intensity modulation; opioid peptides and opioid receptors; peripheral ...
... Modalities subserved Primary sensory cortex location and organization PAIN Modality Endings and characteristics Adequate stimuli Stimulus-response mechanisms Subtypes: "fast" and "slow" pain Localization acuity Referred pain Pain intensity modulation; opioid peptides and opioid receptors; peripheral ...
physiology 1 lab: general cutaneous sensations
... The adaptation appears to happen because the rate of change within the nerve's membrane is inadequate to keep up with continuous stimulation. There are many examples of adaptation in everyday life. For example, our clothing is in constant contact with our skin, which should constantly stimulate touc ...
... The adaptation appears to happen because the rate of change within the nerve's membrane is inadequate to keep up with continuous stimulation. There are many examples of adaptation in everyday life. For example, our clothing is in constant contact with our skin, which should constantly stimulate touc ...
Nervous 1 Green
... The Nervous System -The nervous system is an organ system that acts as the information highway for the body and consists of many nerve cells (1). -Nervous systems are made up of two cell types: neurons, and glial cells(2). -Neurons work to monitor the conditions in and around the body(1). They give ...
... The Nervous System -The nervous system is an organ system that acts as the information highway for the body and consists of many nerve cells (1). -Nervous systems are made up of two cell types: neurons, and glial cells(2). -Neurons work to monitor the conditions in and around the body(1). They give ...
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.