Lecture #13 * Animal Nervous Systems
... At resting potential the neuron is NOT actively transmitting signals Maintained largely because cell membranes are more permeable to K+ than to Na+; more K+ leaves the cell than Na+ enters An ATP powered K+/Na+ pump continually restores the concentration gradients; this also helps to maintain the ...
... At resting potential the neuron is NOT actively transmitting signals Maintained largely because cell membranes are more permeable to K+ than to Na+; more K+ leaves the cell than Na+ enters An ATP powered K+/Na+ pump continually restores the concentration gradients; this also helps to maintain the ...
Sensory neurons
... Sensory Neurons are a part of the bodies nervous system that are responsible for detecting external signals. These neurons are rather important and special as they do not receive signals from the body, but from external sources like sound, light and temperature. In complex organisms like Humans, mos ...
... Sensory Neurons are a part of the bodies nervous system that are responsible for detecting external signals. These neurons are rather important and special as they do not receive signals from the body, but from external sources like sound, light and temperature. In complex organisms like Humans, mos ...
Final Exam Review Part II 1) The entire nervous system is divided
... D) ganglion 10) A(n) ____ neuron transmits signals to muscles or glands from the CNS. A) interneuron B) sensory C) motor D) ganglion 11) An involuntary response by the nervous system to a stimulus is a A) Synapse B) Reflex C) Motor response D) Smooth muscle ...
... D) ganglion 10) A(n) ____ neuron transmits signals to muscles or glands from the CNS. A) interneuron B) sensory C) motor D) ganglion 11) An involuntary response by the nervous system to a stimulus is a A) Synapse B) Reflex C) Motor response D) Smooth muscle ...
Lecture12 PPT
... 1. The differential permeability of the membrane to the ions. The membrane contains ion channels that allow ions to pass through the membrane. The membrane is most permeable to K+ and Cl-, and last permeable to negatively charged protein ions. 2. The action of sodium-potassium pumps. These pumps con ...
... 1. The differential permeability of the membrane to the ions. The membrane contains ion channels that allow ions to pass through the membrane. The membrane is most permeable to K+ and Cl-, and last permeable to negatively charged protein ions. 2. The action of sodium-potassium pumps. These pumps con ...
Module 3:Neural conduction and transmission Lecture 13
... cytoplasm of the neuron is contained in the soma. Dentrites come out from the soma and carry message into the neurons. Dendrites have small bumps known as dendritic spines which can receive signals from other neurons. Axon is the extension carrying signals from cell body to the terminal buttons at t ...
... cytoplasm of the neuron is contained in the soma. Dentrites come out from the soma and carry message into the neurons. Dendrites have small bumps known as dendritic spines which can receive signals from other neurons. Axon is the extension carrying signals from cell body to the terminal buttons at t ...
activities unit 5 - Junta de Andalucía
... process of relation: a) Sensory organs b) Effectors organs c) External stimuli d) Nervous system. 2. What is a stimulus? 3. Imagine you burn your hand: a) What is the stimulus? b) What is the sense organ involved? c) What is the effector involved when you pull your hand away? 4. Match each different ...
... process of relation: a) Sensory organs b) Effectors organs c) External stimuli d) Nervous system. 2. What is a stimulus? 3. Imagine you burn your hand: a) What is the stimulus? b) What is the sense organ involved? c) What is the effector involved when you pull your hand away? 4. Match each different ...
Lecture #13 – Animal Nervous Systems
... At resting potential the neuron is NOT actively transmitting signals Maintained largely because cell membranes are more permeable to K+ than to Na+; more K+ leaves the cell than Na+ enters An ATP powered K+/Na+ pump continually restores the concentration gradients; this also helps to maintain the ...
... At resting potential the neuron is NOT actively transmitting signals Maintained largely because cell membranes are more permeable to K+ than to Na+; more K+ leaves the cell than Na+ enters An ATP powered K+/Na+ pump continually restores the concentration gradients; this also helps to maintain the ...
Chapter 12: Neural Tissue
... • At the simplest level (individual neurons): – many dendrites receive neurotransmitter messages simultaneously – some excitatory, some inhibitory – net effect on axon hillock determines if action potential is produced ...
... • At the simplest level (individual neurons): – many dendrites receive neurotransmitter messages simultaneously – some excitatory, some inhibitory – net effect on axon hillock determines if action potential is produced ...
Activity Overview - Teacher Enrichment Initiatives
... The brain, like all organs of the body, is made up of cells. The brain is made of many types of cells. In Activity 1C, students learned about three types of cells found in the nervous system. These cells are – neurons, glial cells, and microglial cells (a specialized type of macrophage cell). In thi ...
... The brain, like all organs of the body, is made up of cells. The brain is made of many types of cells. In Activity 1C, students learned about three types of cells found in the nervous system. These cells are – neurons, glial cells, and microglial cells (a specialized type of macrophage cell). In thi ...
Nervous Systems
... • Cell body: this is where most of the neuron’s organelles (including the nucleus) are located • Dendrites: highly branched extensions from the cell body that RECEIVE signals from other neurons • Axon: a large extension from the cell body that TRANSMITS signals to other neurons or “effector” cells • ...
... • Cell body: this is where most of the neuron’s organelles (including the nucleus) are located • Dendrites: highly branched extensions from the cell body that RECEIVE signals from other neurons • Axon: a large extension from the cell body that TRANSMITS signals to other neurons or “effector” cells • ...
1 Absolute refractory period a. Time during which a second
... WHERE DOES THE SPINAL L2 CORD END? produce myelin sheath around axons of PNS neurons. ...
... WHERE DOES THE SPINAL L2 CORD END? produce myelin sheath around axons of PNS neurons. ...
Chapter 11: Nervous System
... Has no centrioles (hence its amitotic nature) Has well-developed Nissl bodies (rough ER) Contains an axon hillock – cone-shaped area from which axons arise ...
... Has no centrioles (hence its amitotic nature) Has well-developed Nissl bodies (rough ER) Contains an axon hillock – cone-shaped area from which axons arise ...
Chapter 11: Nervous System
... Has no centrioles (hence its amitotic nature) Has well-developed Nissl bodies (rough ER) Contains an axon hillock – cone-shaped area from which axons arise ...
... Has no centrioles (hence its amitotic nature) Has well-developed Nissl bodies (rough ER) Contains an axon hillock – cone-shaped area from which axons arise ...
Crossing the Synaptic Gap
... 4. Conduct a class discussion of the results of the model thus far. Ask, “Did it matter how many “stimulating” messages were present for firing as long as the number was greater than the “stopping” or “inhibiting” messages? Point out that the firing of a neuron is like turing on a light switch — eit ...
... 4. Conduct a class discussion of the results of the model thus far. Ask, “Did it matter how many “stimulating” messages were present for firing as long as the number was greater than the “stopping” or “inhibiting” messages? Point out that the firing of a neuron is like turing on a light switch — eit ...
Brain Cell or Neuron
... Dendrites: receive information from another cell and send the message to the cell body. Axon: sends messages away from the cell body. Terminals: place where two cells meet to allow messages to pass from one cell to another. ...
... Dendrites: receive information from another cell and send the message to the cell body. Axon: sends messages away from the cell body. Terminals: place where two cells meet to allow messages to pass from one cell to another. ...
Test Review: Chapter 2 1. The function of
... C) inflow of positively charged ions through an axon membrane. D) reabsorption of excess neurotransmitter molecules by a sending neuron. E) the ending of the refractory period. ...
... C) inflow of positively charged ions through an axon membrane. D) reabsorption of excess neurotransmitter molecules by a sending neuron. E) the ending of the refractory period. ...
Nervous System Guided Notes
... - bring stimuli to CNS -- affect the body by internal or external information 2) _______________________________or motor neurons -- cause muscles or glands to respond -- effect a change / response ...
... - bring stimuli to CNS -- affect the body by internal or external information 2) _______________________________or motor neurons -- cause muscles or glands to respond -- effect a change / response ...
LS Chapter 18: Control and Coordination The Nervous System
... The area between neurons is called a _______________ o Neurons relay information by releasing chemicals called ______________________________ ...
... The area between neurons is called a _______________ o Neurons relay information by releasing chemicals called ______________________________ ...
Central Nervous System (CNS)
... channels to open. • Ca2+ rushes in, binds to regulatory proteins ...
... channels to open. • Ca2+ rushes in, binds to regulatory proteins ...
Brain and Nervous System
... Action potentials are caused by an exchange of ions across the neuron membrane. A stimulus first causes sodium channels to open. Because there are many more sodium ions on the outside, and the inside of the neuron is negative relative to the outside, sodium ions rush into the neuron. Remember, sodiu ...
... Action potentials are caused by an exchange of ions across the neuron membrane. A stimulus first causes sodium channels to open. Because there are many more sodium ions on the outside, and the inside of the neuron is negative relative to the outside, sodium ions rush into the neuron. Remember, sodiu ...
Document
... - Neural network is a computational model that simulate some properties of the human brain. - The connections and nature of units determine the behavior of a neural network. - Perceptrons are feed-forward networks that can only ...
... - Neural network is a computational model that simulate some properties of the human brain. - The connections and nature of units determine the behavior of a neural network. - Perceptrons are feed-forward networks that can only ...
Exam I
... 21) Based only on the location of the synapses, which neuron would have the easiest time getting neuron W to fire an action potential? A) neuron X B) neuron Y 22) If Neuron W’s upper dendrite has a much smaller length constant than its lower dendrite, an action potential traveling down which neuron ...
... 21) Based only on the location of the synapses, which neuron would have the easiest time getting neuron W to fire an action potential? A) neuron X B) neuron Y 22) If Neuron W’s upper dendrite has a much smaller length constant than its lower dendrite, an action potential traveling down which neuron ...
Nervous System
... Uses hormones that travel through the bloodstream. Takes longer to get there but lasts a long time ...
... Uses hormones that travel through the bloodstream. Takes longer to get there but lasts a long time ...