Unit One: Introduction to Physiology: The Cell and
... Transduction of Sensory Stimuli into Nerve Impulses • Mechanism of Receptor Adaptation- different for each type of receptor a. In the mechanoreceptor the initial compression causes the receptor potential which disappears within a fraction of a second even though the compression continues b. Accommo ...
... Transduction of Sensory Stimuli into Nerve Impulses • Mechanism of Receptor Adaptation- different for each type of receptor a. In the mechanoreceptor the initial compression causes the receptor potential which disappears within a fraction of a second even though the compression continues b. Accommo ...
Physiology Lecture 6
... negative charges entering the cell. Depolarization of a dendrite or cell body is excitatory, whereas hyperpolarization is inhibitory, in terms of their effects on the production of nerve impulses. ...
... negative charges entering the cell. Depolarization of a dendrite or cell body is excitatory, whereas hyperpolarization is inhibitory, in terms of their effects on the production of nerve impulses. ...
NEUROCHEMISTRY & NEUROTRANSMITTERS
... MEANS. THE INFORMATION, TYPICALLY (BUT WITH EXCEPTIONS), TRAVELS FROM THE DENDRITE THROUGH THE CELL BODY AND THE AXON TO THE AXON TERMINALS. JUST LIKE HORMONES, THE COMMUNICATION (OR SIGNALLING) IS MEANT TO COORDINATE THE ACTIONS OF HIGHER ORGANISMS, BUT IN A MUCH MORE RAPID MANNER THAN IS COMMON TO ...
... MEANS. THE INFORMATION, TYPICALLY (BUT WITH EXCEPTIONS), TRAVELS FROM THE DENDRITE THROUGH THE CELL BODY AND THE AXON TO THE AXON TERMINALS. JUST LIKE HORMONES, THE COMMUNICATION (OR SIGNALLING) IS MEANT TO COORDINATE THE ACTIONS OF HIGHER ORGANISMS, BUT IN A MUCH MORE RAPID MANNER THAN IS COMMON TO ...
chapter30_Sensory Perception(1
... • 16 whales beached themselves when the US Navy tested a new sonar system – autopsies revealed blood in their ears and in acoustic fat ...
... • 16 whales beached themselves when the US Navy tested a new sonar system – autopsies revealed blood in their ears and in acoustic fat ...
Nervous System
... CNS receives and analyzes this information and initiates responses. PNS then picks up and carries the response signal o This information is transmitted throughout your body by means of electrical charges or impulses. o These impulses travel at speeds up to 280 miles per hour. o The messengers an ...
... CNS receives and analyzes this information and initiates responses. PNS then picks up and carries the response signal o This information is transmitted throughout your body by means of electrical charges or impulses. o These impulses travel at speeds up to 280 miles per hour. o The messengers an ...
Chapter 45 Presentation-Hormones and the Endocrine System
... autoimmune disease resulting in the destruction of the body’s cells. The pancreas can’t produce insulin and the person requires insulin ...
... autoimmune disease resulting in the destruction of the body’s cells. The pancreas can’t produce insulin and the person requires insulin ...
So, do worms sleep?
... Despite much progress in our understanding of C. elegans locomotion and navigation, little is known about the regulation of the absence of movement. Yet behavioral quiescent states are universal to the animal world, with the most famous and mysterious of these being sleep. The roundworm C. elegans i ...
... Despite much progress in our understanding of C. elegans locomotion and navigation, little is known about the regulation of the absence of movement. Yet behavioral quiescent states are universal to the animal world, with the most famous and mysterious of these being sleep. The roundworm C. elegans i ...
Nervous System - teacherver.com
... electrical impulses, which are rapid and specific and cause almost immediate responses. ...
... electrical impulses, which are rapid and specific and cause almost immediate responses. ...
intro to psych brain and behavior
... Affects communication between neurons Frontal lobe and limbic system ...
... Affects communication between neurons Frontal lobe and limbic system ...
Chapters 11: Introduction to the Nervous System and Nervous
... 1. AP in presynaptic neuron triggers ________ion channels in axon terminal to open 2. ____________ of calcium ions causes synaptic vesicles to release neurotransmitter into synaptic cleft 3. Neurotransmitters bind to ____________ on postsynaptic neuron 4. Ion channels open, leading to a local potent ...
... 1. AP in presynaptic neuron triggers ________ion channels in axon terminal to open 2. ____________ of calcium ions causes synaptic vesicles to release neurotransmitter into synaptic cleft 3. Neurotransmitters bind to ____________ on postsynaptic neuron 4. Ion channels open, leading to a local potent ...
Plant Responses - MrsSconyersLabBiology
... Stimulus and Response • Stimulus – causes a response • Response – reaction to a stimulus • Ex: clapping in someone’s face – Stimulus – clap – Response – flinching ...
... Stimulus and Response • Stimulus – causes a response • Response – reaction to a stimulus • Ex: clapping in someone’s face – Stimulus – clap – Response – flinching ...
The Nervous System
... environment when dissolved in a liquid or when absorbed on a solid surface. Those materials that have a preference for the moving phase will slowly pull ahead and separate from those substances that prefer to remain in the ...
... environment when dissolved in a liquid or when absorbed on a solid surface. Those materials that have a preference for the moving phase will slowly pull ahead and separate from those substances that prefer to remain in the ...
Ch. 3 S. 1
... The _________________ system regulates our internal functions. It is also involved in how we react to the external world. Even learning and __________________ are made possible by the nervous system. When we learn a new behavior or acquire new information, the nervous system registers that experienc ...
... The _________________ system regulates our internal functions. It is also involved in how we react to the external world. Even learning and __________________ are made possible by the nervous system. When we learn a new behavior or acquire new information, the nervous system registers that experienc ...
E.2 - Perception of Stimuli
... react by slamming on the breaks. But, this “reaction time” process has taken up a certain amount of time. What nervous system processes needed to happen? Describe it, including what your motor neurons, sensory neurons, and relay neurons did during that process. ...
... react by slamming on the breaks. But, this “reaction time” process has taken up a certain amount of time. What nervous system processes needed to happen? Describe it, including what your motor neurons, sensory neurons, and relay neurons did during that process. ...
The nervous system
... The synapse is a junctional space between a nerve cell and another cell or effector is called a synapse. Messages travel within the neuron as an electrical action potential. The space between two cells is known as the synaptic cleft. To cross the synaptic cleft requires the actions of neurotransmitt ...
... The synapse is a junctional space between a nerve cell and another cell or effector is called a synapse. Messages travel within the neuron as an electrical action potential. The space between two cells is known as the synaptic cleft. To cross the synaptic cleft requires the actions of neurotransmitt ...
![[j26] Chapter 10#](http://s1.studyres.com/store/data/009340209_1-fd5ad583b7e7692dc7c492f759918598-300x300.png)
[j26] Chapter 10#
... sensory cortex (postcentral gyrus), the auditory cortex (temporal lobe) the visual cortex (occipital lobe) and the deeper, specialized nuclei for interpretation of taste and smell. This chapter examines characteristics of the many specialized structures known as sensory receptors that allow us to pe ...
... sensory cortex (postcentral gyrus), the auditory cortex (temporal lobe) the visual cortex (occipital lobe) and the deeper, specialized nuclei for interpretation of taste and smell. This chapter examines characteristics of the many specialized structures known as sensory receptors that allow us to pe ...
CHAPTER 3
... drugs with a chemical structure similar to that of the natural opiates. These include morphine, heroin, methadone, and codeine. They are associated with inhibition of pain and feelings of elation, followed by anxiety, pain, and overresponsiveness to stimulation. The brain produces chemicals known as ...
... drugs with a chemical structure similar to that of the natural opiates. These include morphine, heroin, methadone, and codeine. They are associated with inhibition of pain and feelings of elation, followed by anxiety, pain, and overresponsiveness to stimulation. The brain produces chemicals known as ...
Central nervous system
... The substances and organelles being moved are linked by proteins to microtubules in the cell body and axon. The microtubules serve as the “rails” along which the transport occurs. The linking proteins (dynein and kinesin) act as the “motors” of axon transport and, as ATPase enzymes, they also transf ...
... The substances and organelles being moved are linked by proteins to microtubules in the cell body and axon. The microtubules serve as the “rails” along which the transport occurs. The linking proteins (dynein and kinesin) act as the “motors” of axon transport and, as ATPase enzymes, they also transf ...
Lecture_29_noquiz
... Permeabilities change during an action potential and how this allows neurons to “fire”. ...
... Permeabilities change during an action potential and how this allows neurons to “fire”. ...
BIOL241NSintro12aJUL2012
... • Synaptic cleft The small gap that separates the presynaptic membrane and the postsynaptic membrane • Area of terminal containing synaptic vesicles filled with neurotransmitters ...
... • Synaptic cleft The small gap that separates the presynaptic membrane and the postsynaptic membrane • Area of terminal containing synaptic vesicles filled with neurotransmitters ...
B) Nervous System Introduction NtG Spring
... Each neuron has only ____________________ axon Conducting region of the neuron _____________________________ nerve impulses Transmits impulses _________________ from the cell body Initial region of the axon arises from the ________________ ____________________ Narrows to form a slender p ...
... Each neuron has only ____________________ axon Conducting region of the neuron _____________________________ nerve impulses Transmits impulses _________________ from the cell body Initial region of the axon arises from the ________________ ____________________ Narrows to form a slender p ...
the pain process
... the brain. The components of nociception include transduction, transmission, modulation and perception. Transduction is the conversion of a noxious stimulus (mechanical, chemical or thermal) into electrical energy by a peripheral nociceptor (free afferent nerve ending). This is the first step in the ...
... the brain. The components of nociception include transduction, transmission, modulation and perception. Transduction is the conversion of a noxious stimulus (mechanical, chemical or thermal) into electrical energy by a peripheral nociceptor (free afferent nerve ending). This is the first step in the ...
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.