![22 reflexes 1 - The reflex arc](http://s1.studyres.com/store/data/015874009_1-0772bfcfea078e531d048f6e1286c926-300x300.png)
22 reflexes 1 - The reflex arc
... If these excitatory potentials summate enough to bring the efferent membrane to threshold, the efferent neuron fires The efferent axon also carries all-or-none action potentials The neuromuscular junction the response there is also the need for summation, but the excitatory post-synaptic potential i ...
... If these excitatory potentials summate enough to bring the efferent membrane to threshold, the efferent neuron fires The efferent axon also carries all-or-none action potentials The neuromuscular junction the response there is also the need for summation, but the excitatory post-synaptic potential i ...
Resting Potential
... Effects of Ntms • Epinephrine & norepinephrine – hormones when released in blood, but ntm in the n.s.; stimulate autonomic n.s.; incr. HR, resp. rate, etc.; “fight-or-flight” response • Dopamine – • Serotonin – inhibitory; insufficient levels associated with insomnia • Endorphins & enkephalins – ge ...
... Effects of Ntms • Epinephrine & norepinephrine – hormones when released in blood, but ntm in the n.s.; stimulate autonomic n.s.; incr. HR, resp. rate, etc.; “fight-or-flight” response • Dopamine – • Serotonin – inhibitory; insufficient levels associated with insomnia • Endorphins & enkephalins – ge ...
Crossword Puzzle
... 3. junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron 4. an impairment of language as a result of damage to any of several cortical areas 9. located at the back of the frontal lobe, the part of the cortex that controls voluntary movement 10. Lim ...
... 3. junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron 4. an impairment of language as a result of damage to any of several cortical areas 9. located at the back of the frontal lobe, the part of the cortex that controls voluntary movement 10. Lim ...
Brain Neurotransmitters
... • The nervous system is made up of several parts. • The Central Nervous System (CNS) is made up of the areas encased by bone-- the brain and spinal cord. • The Peripheral Nervous System (PNS) includes the rest of the nervous system ("peripheral" referring to the body outside the CNS). ...
... • The nervous system is made up of several parts. • The Central Nervous System (CNS) is made up of the areas encased by bone-- the brain and spinal cord. • The Peripheral Nervous System (PNS) includes the rest of the nervous system ("peripheral" referring to the body outside the CNS). ...
The Nervous System - OCPS TeacherPress
... inactive neuron – polarized (more + in extracellular space). Extracellular: mainly Na+ Intracellular: mainly K+ ...
... inactive neuron – polarized (more + in extracellular space). Extracellular: mainly Na+ Intracellular: mainly K+ ...
The Brain and the Neuron (1)
... impulse, neuron will not fire • All-or-none principle: neuron will fire or not fire, no in-between • Threshold: level of stimulation required to trigger a neural impulse (excitatory – inhibitory ...
... impulse, neuron will not fire • All-or-none principle: neuron will fire or not fire, no in-between • Threshold: level of stimulation required to trigger a neural impulse (excitatory – inhibitory ...
Study questions for this lab.
... What is the region of the brain called that processes sensory information from various parts of the body? How is it that a touch stimulus delivered to the left hand gets processed on the right side of the brain? For a first order sensory neuron axon conveying pain or temperature information, what i ...
... What is the region of the brain called that processes sensory information from various parts of the body? How is it that a touch stimulus delivered to the left hand gets processed on the right side of the brain? For a first order sensory neuron axon conveying pain or temperature information, what i ...
Paper I
... 4. If the two structures are both on the left side of the body, they are If one is on the left and the other is on the right, they are ...
... 4. If the two structures are both on the left side of the body, they are If one is on the left and the other is on the right, they are ...
chapt12-nervous system
... The gates of potassium channels open and K+ flows into the axon. The membrane potential repolarizes to -65 MV. Propagation of an Action Potential The action potential occurs in each successive portion of an axon. A refractory period ensures that the action potential will not move backwards. In myeli ...
... The gates of potassium channels open and K+ flows into the axon. The membrane potential repolarizes to -65 MV. Propagation of an Action Potential The action potential occurs in each successive portion of an axon. A refractory period ensures that the action potential will not move backwards. In myeli ...
Title: Nervous System
... 7. Second messenger system (G-proteins). Binding of a signal molecule – into an intracellular response that modifies the behavior of target cell a) Phase I – binding of first messenger (transmitter) to the receptor (T+R) b) Phase II – transduction of a signal into the intracellular compartment. T+R ...
... 7. Second messenger system (G-proteins). Binding of a signal molecule – into an intracellular response that modifies the behavior of target cell a) Phase I – binding of first messenger (transmitter) to the receptor (T+R) b) Phase II – transduction of a signal into the intracellular compartment. T+R ...
Perception
... *increasing intensity changes the rate of firing (not the size of the action potentials) Limit to increasing late of firing is due to the refractory period (1ms) Refractory period- the interval between the time one nerve impulse occurs and the next one can be generated in the axon. Upper limit of ra ...
... *increasing intensity changes the rate of firing (not the size of the action potentials) Limit to increasing late of firing is due to the refractory period (1ms) Refractory period- the interval between the time one nerve impulse occurs and the next one can be generated in the axon. Upper limit of ra ...
Human Nerve Chapter
... During daily activities, animals must detect changes in their internal and external environments and react to those changes in an appropriate manner to maintain a constant internal environment and respond to changes in the external environment. In vertebrates, these functions are controlled by two o ...
... During daily activities, animals must detect changes in their internal and external environments and react to those changes in an appropriate manner to maintain a constant internal environment and respond to changes in the external environment. In vertebrates, these functions are controlled by two o ...
CNS II
... • Many others are inhibitory: they secrete a transmitter substance that inhibits the postsynaptic neuron • Fig. 45-6 • Synaptic cleft • Transmitter vesicles: contain transmitter substance that is released into the synaptic cleft to excite or inhibit the postsynaptic neuron • Excites with excitatory ...
... • Many others are inhibitory: they secrete a transmitter substance that inhibits the postsynaptic neuron • Fig. 45-6 • Synaptic cleft • Transmitter vesicles: contain transmitter substance that is released into the synaptic cleft to excite or inhibit the postsynaptic neuron • Excites with excitatory ...
introduction
... postsynaptic structure and a complex of specific receptors, binding proteins and enzymes. • Synaptic vesicles: Membrane-enclosed vesicles inside the presynaptic terminal which contain neurotransmitters. Small, clear synaptic vesicles (Ach, Gly, GABA, glutamate) Small vesicles with a dense core ( ...
... postsynaptic structure and a complex of specific receptors, binding proteins and enzymes. • Synaptic vesicles: Membrane-enclosed vesicles inside the presynaptic terminal which contain neurotransmitters. Small, clear synaptic vesicles (Ach, Gly, GABA, glutamate) Small vesicles with a dense core ( ...
Module 3
... ganglia, the part of the brain that controls movement, emotion, and cognitive ability. ...
... ganglia, the part of the brain that controls movement, emotion, and cognitive ability. ...
nervous system power point
... its resting potential, sodium pumped back outside. A neuron can not carry another impulse until it returns to its resting potential ...
... its resting potential, sodium pumped back outside. A neuron can not carry another impulse until it returns to its resting potential ...
Nerve Cells and Nerve Impulses
... Cells of the Nervous System Neurons and Glia Terms associated with Neurons Motor neuron-receives excitation from other neurons and conducts impulses from its soma in the spinal cord to muscle of gland cells Sensory neuron-specialized at one end to be highly sensitive to a particular type of stimula ...
... Cells of the Nervous System Neurons and Glia Terms associated with Neurons Motor neuron-receives excitation from other neurons and conducts impulses from its soma in the spinal cord to muscle of gland cells Sensory neuron-specialized at one end to be highly sensitive to a particular type of stimula ...
Nerves Part 1 Powerpoint
... • If myelin is stripped off (by, for example, the immune system) there are no voltage-gated ion channels underneath it and the neuron fails to send signals – This is the cause and effect of Multiple Sclerosis, which paralyzes myelinated neurons while leaving other neurons intact ...
... • If myelin is stripped off (by, for example, the immune system) there are no voltage-gated ion channels underneath it and the neuron fails to send signals – This is the cause and effect of Multiple Sclerosis, which paralyzes myelinated neurons while leaving other neurons intact ...
Section 35-2: The Nervous System The nervous system controls and
... Fetal alcohol syndrome (FAS) is a group of birth defects caused by the effects of alcohol on the fetus. FAS can cause minor to serious brain damage, heart defects, malformed faces, delayed growth, and poor motor ...
... Fetal alcohol syndrome (FAS) is a group of birth defects caused by the effects of alcohol on the fetus. FAS can cause minor to serious brain damage, heart defects, malformed faces, delayed growth, and poor motor ...
File
... Section 35-2: The Nervous System The nervous system controls and coordinates functions throughout the body and responds to internal and external stimuli. Neurons (See Fig. 35-5, page 897) The messages carried by the nervous system are electrical signals called impulses. The cells that transmit these ...
... Section 35-2: The Nervous System The nervous system controls and coordinates functions throughout the body and responds to internal and external stimuli. Neurons (See Fig. 35-5, page 897) The messages carried by the nervous system are electrical signals called impulses. The cells that transmit these ...
CH 48 Nervous systemnotes2010
... 2. interneuron- a nerve cell within the central nervous system responsible for the integration of neural input and output 3. motor neuron transmits signals from the brain or spinal column to muscles or glands How do nerve cells send impulses along itself? All deals with membrane potentials it’s the ...
... 2. interneuron- a nerve cell within the central nervous system responsible for the integration of neural input and output 3. motor neuron transmits signals from the brain or spinal column to muscles or glands How do nerve cells send impulses along itself? All deals with membrane potentials it’s the ...
Key for Week 1 Course Packet Page 1
... sugar/glucose for an energy source (to metabolize inside the respective cells). 6. Set point = 90 mg Glucose / 100 ml of blood Page 1-5 & 1-6 are for demonstration purposes only - there is nothing to fill out, but try to understand the basic components AND most importantly their relationships. Use i ...
... sugar/glucose for an energy source (to metabolize inside the respective cells). 6. Set point = 90 mg Glucose / 100 ml of blood Page 1-5 & 1-6 are for demonstration purposes only - there is nothing to fill out, but try to understand the basic components AND most importantly their relationships. Use i ...
Chp 9: NERVOUS TISSUE
... ______________________________: have several dendrites and one axon; most in brain and spinal cord ______________________________: have one main dendrite and one axon; retina of the eye, inner ear, olfactory area of brain ______________________________: dendrites and one axon fused together fo ...
... ______________________________: have several dendrites and one axon; most in brain and spinal cord ______________________________: have one main dendrite and one axon; retina of the eye, inner ear, olfactory area of brain ______________________________: dendrites and one axon fused together fo ...
Unit 2 Review
... 13. What neurotransmitter is associated with motor movement and has been linked to Alzheimer’s disease? 14. How many types of neurons do we have? 15. Efferent neurons also known as _____________ neurons carry messages from the CNS to the rest of the body. 16. Interneurons are found only within the _ ...
... 13. What neurotransmitter is associated with motor movement and has been linked to Alzheimer’s disease? 14. How many types of neurons do we have? 15. Efferent neurons also known as _____________ neurons carry messages from the CNS to the rest of the body. 16. Interneurons are found only within 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.