Chapter 10 – Sensory Physiology
... Type of energy and its intensity Location of the body affected by it Modality is main type of stimulus – temperature, taste Submodality is its subtypes – cold or hot; salt, sour, sweet and bitter Sensory Receptors Sensory Receptors are either endings of an afferent neuron or a receptor cell that pas ...
... Type of energy and its intensity Location of the body affected by it Modality is main type of stimulus – temperature, taste Submodality is its subtypes – cold or hot; salt, sour, sweet and bitter Sensory Receptors Sensory Receptors are either endings of an afferent neuron or a receptor cell that pas ...
Study Guide for Chapter 7 - Neuron Function Be familiar with the
... Study Guide for Chapter 7 - Neuron Function Be familiar with the following terms and their biological importance: action potential (“nerve impulse”), afferent, astrocyte, axon, axonal end bulbs (synaptic end bulbs, boutons, axon endings, synaptic knobs), bipolar neuron, blood-brain barrier, central ...
... Study Guide for Chapter 7 - Neuron Function Be familiar with the following terms and their biological importance: action potential (“nerve impulse”), afferent, astrocyte, axon, axonal end bulbs (synaptic end bulbs, boutons, axon endings, synaptic knobs), bipolar neuron, blood-brain barrier, central ...
The skin performs all of the following except
... Students will know… Explain what an action potential is? K+ ions are entering the neuron Negatively charged proteins are leaving the neuron Na+ ions are entering the neuron The myelin coat has broken down and ions are ...
... Students will know… Explain what an action potential is? K+ ions are entering the neuron Negatively charged proteins are leaving the neuron Na+ ions are entering the neuron The myelin coat has broken down and ions are ...
Cellular Neuroscience
... Already before the specific tuning properties of sensory receptors could be demonstrated, Rene Descartes hypothesized that sensory afferents carry modality specific information to the brain. Microstimulation of single cutaneous afferents in human volunteers links specific nerve fibres to specific se ...
... Already before the specific tuning properties of sensory receptors could be demonstrated, Rene Descartes hypothesized that sensory afferents carry modality specific information to the brain. Microstimulation of single cutaneous afferents in human volunteers links specific nerve fibres to specific se ...
Homeostasis and Behavior
... Homeostasis and Behavior stimulus - anything that causes a reaction or change in an organism. response - an organisms reaction to a stimulus. homeostasis – maintaining a stable balance in the body. Organisms’ bodies constantly respond to stimuli to maintain homeostasis. All organisms are able to det ...
... Homeostasis and Behavior stimulus - anything that causes a reaction or change in an organism. response - an organisms reaction to a stimulus. homeostasis – maintaining a stable balance in the body. Organisms’ bodies constantly respond to stimuli to maintain homeostasis. All organisms are able to det ...
13. Electrochemical Impulse
... and the action potential moves away from the site of origin. 4. The electrical disturbance moves along the nerve membrane in a wave of depolarization. The membrane is restored, as successive areas once again become more permeable to potassium. The sodium-potassium pump restores and maintains the pol ...
... and the action potential moves away from the site of origin. 4. The electrical disturbance moves along the nerve membrane in a wave of depolarization. The membrane is restored, as successive areas once again become more permeable to potassium. The sodium-potassium pump restores and maintains the pol ...
Nervous System
... Identify the two main parts of the Nervous System Describe the structure of a neuron and the function of each major part. Distinguish between sensory neurons, motor neurons, and interneurons. Summarize the electrical and chemical conditions of resting potential. Outline the electrical and chemical c ...
... Identify the two main parts of the Nervous System Describe the structure of a neuron and the function of each major part. Distinguish between sensory neurons, motor neurons, and interneurons. Summarize the electrical and chemical conditions of resting potential. Outline the electrical and chemical c ...
The Nervous System
... a very fast motor response to a stimulus because the sensory neuron bringing information about the threat passes the information directly to the motor neuron. ...
... a very fast motor response to a stimulus because the sensory neuron bringing information about the threat passes the information directly to the motor neuron. ...
Anatomy, composition and physiology of neuron, dendrite, axon,and
... Specificity and modifiability of neuronal connections ...
... Specificity and modifiability of neuronal connections ...
Human Anatomy, First Edition McKinley&O'Loughlin
... Conscious awareness of incoming sensory information is called sensation. Stimulus that reaches the cerebral cortex of the brain results in a sensation of that stimulus. We are consciously aware of only a fraction of stimuli. ...
... Conscious awareness of incoming sensory information is called sensation. Stimulus that reaches the cerebral cortex of the brain results in a sensation of that stimulus. We are consciously aware of only a fraction of stimuli. ...
Chapter 12-13 Summary
... A nerve impulse is an electrochemical event (initiated by various stimuli) that cause a change in neural plasma membrane permeability. This change allows sodium ions to enter the cell, causing depolarization. Once begun the action potential or nerve impulse continues over the entire surface of the a ...
... A nerve impulse is an electrochemical event (initiated by various stimuli) that cause a change in neural plasma membrane permeability. This change allows sodium ions to enter the cell, causing depolarization. Once begun the action potential or nerve impulse continues over the entire surface of the a ...
I. Functions and Divisions of the Nervous System A. The nervous
... conducts nerve impulses away from the cell body to the axon terminals. i. Axon terminals secrete neurotransmitters that either excite or inhibit other neurons or effector cells. ii. Axons may have a myelin sheath, a whitish, fatty, segmented covering that protects, insulates, and increases conductio ...
... conducts nerve impulses away from the cell body to the axon terminals. i. Axon terminals secrete neurotransmitters that either excite or inhibit other neurons or effector cells. ii. Axons may have a myelin sheath, a whitish, fatty, segmented covering that protects, insulates, and increases conductio ...
NERVES
... and open or close when a specific channel when a specific chemical binds to the channel › Voltage-gated ion channels- are found in axons and open or close when the membrane potential changes ...
... and open or close when a specific channel when a specific chemical binds to the channel › Voltage-gated ion channels- are found in axons and open or close when the membrane potential changes ...
Nervous System
... As Na+ goes into cell, neuron goes from being polarized to depolarized When inside becomes positive, polarization is removed and the threshold is reached K+ ions move outside, Na+ ions stay inside membrane Refractory period returns everything ...
... As Na+ goes into cell, neuron goes from being polarized to depolarized When inside becomes positive, polarization is removed and the threshold is reached K+ ions move outside, Na+ ions stay inside membrane Refractory period returns everything ...
36.1 The Nervous System Neurons: Basic units of
... axon and conducts an impulse. Dendrite - branch like extensions of the neuron that receive impulses and carry them to the cell body. White matter - Composed of myelin which coats the axons – this area of the brain is high in axons Gray matter – areas not covered by myelin – the cell bodies themselve ...
... axon and conducts an impulse. Dendrite - branch like extensions of the neuron that receive impulses and carry them to the cell body. White matter - Composed of myelin which coats the axons – this area of the brain is high in axons Gray matter – areas not covered by myelin – the cell bodies themselve ...
Neural Tissue
... Site of communication between two nerve cells or nerve cell and effector cell neuro-effector junctions (example?) ...
... Site of communication between two nerve cells or nerve cell and effector cell neuro-effector junctions (example?) ...
lesson 6
... • Nerve signals are transmitted by action potentials that are abrupt, pulse-like changes in the membrane potential that last a few ten thousandths of a second. • Action potentials can be divided into three phases: the resting or polarized state, depolarization, and repolarization • The amplitude of ...
... • Nerve signals are transmitted by action potentials that are abrupt, pulse-like changes in the membrane potential that last a few ten thousandths of a second. • Action potentials can be divided into three phases: the resting or polarized state, depolarization, and repolarization • The amplitude of ...
PRACTICE QUIZ
... 29. The more numerous _____________________ are photoreceptors used for dim-light and peripheral vision. 30. The eye and olfactory epithelium possess specialized neurons that have only a single dendrite and an axon. This type of neuron is called ______________________________. 31. The cornea is avas ...
... 29. The more numerous _____________________ are photoreceptors used for dim-light and peripheral vision. 30. The eye and olfactory epithelium possess specialized neurons that have only a single dendrite and an axon. This type of neuron is called ______________________________. 31. The cornea is avas ...
Nerve Impulses - manorlakesscience
... in the brain secrete neurohormones into blood capillaries that become associated with the pituitary. ...
... in the brain secrete neurohormones into blood capillaries that become associated with the pituitary. ...
2014 nervous system ppt
... • Peripheral Nervous System • Sense stimuli (receptors - dendrite of neuron) • Motor responses using effectors (muscles, organs, glands) • Transmit information to and from CNS • Sensory and motor neurons • Groups of cell bodies of PNS called ganglia ...
... • Peripheral Nervous System • Sense stimuli (receptors - dendrite of neuron) • Motor responses using effectors (muscles, organs, glands) • Transmit information to and from CNS • Sensory and motor neurons • Groups of cell bodies of PNS called ganglia ...
Document
... Nerve Impulse Transmission Two ways to increase velocity of conduction: 1. Axon has a large diameter -Less resistance to current flow -Found primarily in invertebrates 2. Axon is myelinated -Action potential is only produced at the nodes of Ranvier -Impulse jumps from node to node ...
... Nerve Impulse Transmission Two ways to increase velocity of conduction: 1. Axon has a large diameter -Less resistance to current flow -Found primarily in invertebrates 2. Axon is myelinated -Action potential is only produced at the nodes of Ranvier -Impulse jumps from node to node ...
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.