MyersExpPsych7e_IM_Module 03 garber edited
... Action Potential Properties All-or-None Response: A strong stimulus can trigger more neurons to fire, and to fire more often, but it does not affect the action potentials strength or speed. Intensity of an action potential remains the same throughout the length of the axon. ...
... Action Potential Properties All-or-None Response: A strong stimulus can trigger more neurons to fire, and to fire more often, but it does not affect the action potentials strength or speed. Intensity of an action potential remains the same throughout the length of the axon. ...
Synaptic Transmission and Neurotransmitters
... • Action potential ≠ local potential in several important ways: – Local potential = graded potential- it varies in magnitude depending on strength of stimulus that produced it; action potential is ungraded – Action potential obeys all or none law: occurs at full strength or not at all – Action poten ...
... • Action potential ≠ local potential in several important ways: – Local potential = graded potential- it varies in magnitude depending on strength of stimulus that produced it; action potential is ungraded – Action potential obeys all or none law: occurs at full strength or not at all – Action poten ...
Neurons
... Neurotransmitters chemical messengers that traverse the synaptic gaps between neurons when released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether it will generate a neural impulse ...
... Neurotransmitters chemical messengers that traverse the synaptic gaps between neurons when released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether it will generate a neural impulse ...
Physiolgy of the nervous system
... This classification is concerned only with PNS or peripheral nervous system, which subdivided into: 1) Somatic (voluntary) nervous system, which controls the skeletal muscle 2) Autonomic (involuntary) nervous system, which controls smooth muscle ...
... This classification is concerned only with PNS or peripheral nervous system, which subdivided into: 1) Somatic (voluntary) nervous system, which controls the skeletal muscle 2) Autonomic (involuntary) nervous system, which controls smooth muscle ...
Chapter 17:
... A neuron will only fire if it is stimulated with an intensity of at least threshold level Every action potential for a neuron is identical in strength and duration (regardless of how much beyond threshold the stimulus is) ...
... A neuron will only fire if it is stimulated with an intensity of at least threshold level Every action potential for a neuron is identical in strength and duration (regardless of how much beyond threshold the stimulus is) ...
1. A unicellular protest may use a contractile vacuole to expel
... 28. After the depolarization of an action potential, the fall in the membrane potential occurs due to the a. Closing of sodium inactivation gates. b. Closing of potassium and sodium channels. c. Refractory ...
... 28. After the depolarization of an action potential, the fall in the membrane potential occurs due to the a. Closing of sodium inactivation gates. b. Closing of potassium and sodium channels. c. Refractory ...
Neuron death - UBC Psychology`s Research Labs
... 1. Induction of the neural ____________. 2. Formation of the ____________ tube. ...
... 1. Induction of the neural ____________. 2. Formation of the ____________ tube. ...
Answers
... 1. About how many neurons are there in the average human brain? _____100 BILLION_____ 2. What features do neurons have in common with other cells in the body? HAVE CELL MEMBRANE; HAVE NUCLEUS WITH GENES; CONTAIN ORGANELLES, CARRY OUT BASIC CELLULAR PROCESSES 3. In what ways are neurons unique? SPECI ...
... 1. About how many neurons are there in the average human brain? _____100 BILLION_____ 2. What features do neurons have in common with other cells in the body? HAVE CELL MEMBRANE; HAVE NUCLEUS WITH GENES; CONTAIN ORGANELLES, CARRY OUT BASIC CELLULAR PROCESSES 3. In what ways are neurons unique? SPECI ...
The Nervous System
... ● postsynaptic potentials DO NOT regenerate, but requires 2 ESPSs to occur in rapid succession o has to occur before the postsynaptic neuron potential has returned to action potential to create temporal summation ● simultaneous ESPSs created by different synapses can add together when received by th ...
... ● postsynaptic potentials DO NOT regenerate, but requires 2 ESPSs to occur in rapid succession o has to occur before the postsynaptic neuron potential has returned to action potential to create temporal summation ● simultaneous ESPSs created by different synapses can add together when received by th ...
- Thomson One
... http://faculty.stcc.edu/AandP/AP/AP1pages/nervssys/unit10/neurons.htm Accessed March 2015. ...
... http://faculty.stcc.edu/AandP/AP/AP1pages/nervssys/unit10/neurons.htm Accessed March 2015. ...
The nervous system
... leaves the skull through the foramen magnum extending to the level of the second lumbar vertebra. At this point, it gives rise to numerous individual nerve roots, called the cauda equina. A ...
... leaves the skull through the foramen magnum extending to the level of the second lumbar vertebra. At this point, it gives rise to numerous individual nerve roots, called the cauda equina. A ...
![[j26]Chapter 7#](http://s1.studyres.com/store/data/015520931_1-d3d263c2c8c221955c9bc7f03ee94039-300x300.png)
[j26]Chapter 7#
... The Na+/K+ pumps are not directly involved in the formation of an action potential; rather they are required to maintain the proper, opposing concentration gradients of these two ions. Within a collection of axons (or nerves), a low-intensity stimulus will only activate those few fibers with low thr ...
... The Na+/K+ pumps are not directly involved in the formation of an action potential; rather they are required to maintain the proper, opposing concentration gradients of these two ions. Within a collection of axons (or nerves), a low-intensity stimulus will only activate those few fibers with low thr ...
![[j26]Chapter 7#](http://s1.studyres.com/store/data/009487154_1-bf88061009d68b903e2c1573596f45de-300x300.png)
[j26]Chapter 7#
... ___ 35. The Na+/K+ pumps are not directly involved in the formation of an action potential; rather they are required to maintain the proper, opposing concentration gradients of these two ions. ___ 36. Within a collection of axons (or nerves), a low-intensity stimulus will only activate those few fi ...
... ___ 35. The Na+/K+ pumps are not directly involved in the formation of an action potential; rather they are required to maintain the proper, opposing concentration gradients of these two ions. ___ 36. Within a collection of axons (or nerves), a low-intensity stimulus will only activate those few fi ...
NERVOUS SYSTEMS – FUNCTION AT THE CELLULAR LEVEL
... ion movement in or out of dendrites or cell body change in membrane potential of cell body - amount of change varies (graded) depending on how many channels open and number of ions moving in or out If graded potential exceeds threshold (~10mV above resting potential, or -60 mV) , an action potenti ...
... ion movement in or out of dendrites or cell body change in membrane potential of cell body - amount of change varies (graded) depending on how many channels open and number of ions moving in or out If graded potential exceeds threshold (~10mV above resting potential, or -60 mV) , an action potenti ...
Neuron is the basic working unit of the nervous system, specialized
... with norepinephrine to affect the sympathetic division of the autonomic nervous system. Sometimes called adrenaline. EVOKED POTENTIAL ‐ A measure of the brain’s electrical activity in response to sensory stimuli. This is obtained by placing electrodes on the surface of the scalp (or more rarely, ...
... with norepinephrine to affect the sympathetic division of the autonomic nervous system. Sometimes called adrenaline. EVOKED POTENTIAL ‐ A measure of the brain’s electrical activity in response to sensory stimuli. This is obtained by placing electrodes on the surface of the scalp (or more rarely, ...
Physiology 1B
... Interneurons- CNS neurons that internally communicate and intervene between the sensory inputs and the motor outputs Motor Neurons- Carry outgoing information from the CNS to muscle glands. ...
... Interneurons- CNS neurons that internally communicate and intervene between the sensory inputs and the motor outputs Motor Neurons- Carry outgoing information from the CNS to muscle glands. ...
chapter – 21
... • Receptor sets sensory impulse and is carried to spinal cord through afferent neurons. • From there it passes outwards through the motor neuron and reaches either a muscle or gland cell where response is felt. 3. Explain the mechanism of vision? A. • Light rays focused on retina through the cornea ...
... • Receptor sets sensory impulse and is carried to spinal cord through afferent neurons. • From there it passes outwards through the motor neuron and reaches either a muscle or gland cell where response is felt. 3. Explain the mechanism of vision? A. • Light rays focused on retina through the cornea ...
test - Scioly.org
... d. the enzymatic behavior of the signal molecule e. binding to the intracellular receptors 33. Since water-soluble hormones are unable to pass through the plasma membrane, the cellular action they initiate results from _____. a. steroids are bigger, slower molecules b. steroids must usually be carri ...
... d. the enzymatic behavior of the signal molecule e. binding to the intracellular receptors 33. Since water-soluble hormones are unable to pass through the plasma membrane, the cellular action they initiate results from _____. a. steroids are bigger, slower molecules b. steroids must usually be carri ...
Biological Psychology A branch of psychology concerned with links
... Neurons that carry outgoing information from the CNS to the muscles and glands ...
... Neurons that carry outgoing information from the CNS to the muscles and glands ...
nervous system outline PPT
... Directs the functions of all human body systems – 100 Billion Nerve cells ...
... Directs the functions of all human body systems – 100 Billion Nerve cells ...
REGULATION
... synaptic cleft (space between 2 neurons). B. The electrical impulse is now converted into a chemical response that stimulates the adjoining neuron to receive the transmitted impulse. C. Once the impulse has been transmitted, cholinesterase break down the acetylcholine to clear the way for new signal ...
... synaptic cleft (space between 2 neurons). B. The electrical impulse is now converted into a chemical response that stimulates the adjoining neuron to receive the transmitted impulse. C. Once the impulse has been transmitted, cholinesterase break down the acetylcholine to clear the way for new signal ...
Basis of Membrane Potential Action Potential Movie
... signal • Na ions spread downstream, bringing next region to Na+ channel threshold ...
... signal • Na ions spread downstream, bringing next region to Na+ channel threshold ...
Simplified view of how a neuron sends a signal
... and molecules. The neuron's plasma membrane has a carrier protein called the Na-K pump (Figure 1B). It uses cellular ATP to simultaneously pump Na+ out of the cell and K+ into the cell (Figure 1D). However, it moves 3 Na + for every 2 K+. So, the result is to polarize the membrane, by creating a cha ...
... and molecules. The neuron's plasma membrane has a carrier protein called the Na-K pump (Figure 1B). It uses cellular ATP to simultaneously pump Na+ out of the cell and K+ into the cell (Figure 1D). However, it moves 3 Na + for every 2 K+. So, the result is to polarize the membrane, by creating a cha ...
Jan 7, 2015. PASSIVE ELECTRICAL PROPERTIES OF MEMBRANES
... From example trace given in class; Measure time constant Measure change in membrane potential resulting from a given injection of current Calculate input resistance Calculate total capacitance of cell membrane Estimate diameter of the cell ...
... From example trace given in class; Measure time constant Measure change in membrane potential resulting from a given injection of current Calculate input resistance Calculate total capacitance of cell membrane Estimate diameter of the cell ...