Spinal Cord and the Peripheral Nervous System
... • When Na+ brings its positive charge to the inside of the cell, it causes the outside of the cell to become negative (depolarization). Then the Na+ channels close, the Na+ exit the cell, taking their positive charges with them, and the membrane repolarizes. This event is called an action potential, ...
... • When Na+ brings its positive charge to the inside of the cell, it causes the outside of the cell to become negative (depolarization). Then the Na+ channels close, the Na+ exit the cell, taking their positive charges with them, and the membrane repolarizes. This event is called an action potential, ...
hcollectors
... -Insulin stimulates the liver and muscle to absorb glucose from the blood and convert it to glycogen. Granules of glycogen are stored in the cytoplasm of theses cells. Other cells are stimulated to absorb glucose and use it in cell respiration instead of fat. These processes lower the blood glucose ...
... -Insulin stimulates the liver and muscle to absorb glucose from the blood and convert it to glycogen. Granules of glycogen are stored in the cytoplasm of theses cells. Other cells are stimulated to absorb glucose and use it in cell respiration instead of fat. These processes lower the blood glucose ...
PowerPoint from lab
... All senses work the same way: Receptors collect information – stimulate neurons -- information is sent to the brain – the cerebral cortex integrates the information with that from other senses -- forms a perception (a person’s particular view of the stimulus) ...
... All senses work the same way: Receptors collect information – stimulate neurons -- information is sent to the brain – the cerebral cortex integrates the information with that from other senses -- forms a perception (a person’s particular view of the stimulus) ...
The Somatic Motor System
... FAST twitch (fatigue rapidly – white) SLOW twitch (fatigue slow – red) ...
... FAST twitch (fatigue rapidly – white) SLOW twitch (fatigue slow – red) ...
Fatigue
... a. The opening of voltage-gated K+ channels cause the membrane to _____________________. b. Does K+ move into or out of the cell? __________________ c. If the membrane potential becomes more negative than –70 mV, this is called _________. d. This potential is caused by what characteristic of K+ perm ...
... a. The opening of voltage-gated K+ channels cause the membrane to _____________________. b. Does K+ move into or out of the cell? __________________ c. If the membrane potential becomes more negative than –70 mV, this is called _________. d. This potential is caused by what characteristic of K+ perm ...
Module 3:Neural conduction and transmission Lecture 13
... generation of nerve impulse. It begins with change in the permeability of the membrane and give rise to electrochemical events. These are known as nerve impulses. Normally these impulses start off in the axon hillock instead of dendrites or soma as the membrane is not excitable in these regions. Wit ...
... generation of nerve impulse. It begins with change in the permeability of the membrane and give rise to electrochemical events. These are known as nerve impulses. Normally these impulses start off in the axon hillock instead of dendrites or soma as the membrane is not excitable in these regions. Wit ...
File - Ms Curran`s Leaving Certificate Biology
... Electrical impulses cannot cross a synapse, instead they stimulate the neurotransmitter swellings to release a chemical substance (neurotransmitters), which diffuse across the synaptic cleft ...
... Electrical impulses cannot cross a synapse, instead they stimulate the neurotransmitter swellings to release a chemical substance (neurotransmitters), which diffuse across the synaptic cleft ...
Name Date ______ Nervous System and Endocrine System Exam
... 1. The FUNCTION of the nervous and endocrine system is to _________________________ all life processes. 2. The electrochemical message that travels through the nervous system is called an ____________________. 3. The change in the environment that starts an impulse in a receptor is called a ________ ...
... 1. The FUNCTION of the nervous and endocrine system is to _________________________ all life processes. 2. The electrochemical message that travels through the nervous system is called an ____________________. 3. The change in the environment that starts an impulse in a receptor is called a ________ ...
4/12 - bio.utexas.edu
... while the brain integrates the incoming signals to determine an appropriate response. Fig 46.1 ...
... while the brain integrates the incoming signals to determine an appropriate response. Fig 46.1 ...
Feedback — Exam
... Select all the correct answers (could be more than one) Only the active cat developed operational motor system; a functional motor system is the foundation for the development of all other systems in their brain, including vision. Building an internal (brain) model of the visual world requires, earl ...
... Select all the correct answers (could be more than one) Only the active cat developed operational motor system; a functional motor system is the foundation for the development of all other systems in their brain, including vision. Building an internal (brain) model of the visual world requires, earl ...
- Eye, Brain, and Vision
... the membrane from inside to outside, of packages of special chemicals call neurotransmitters. About twenty transmitter chemicals have been identified, and to judge from the rate of new discoveries the total number may exceed fifty. Transmitter molecules are much smaller than protein molecules but ar ...
... the membrane from inside to outside, of packages of special chemicals call neurotransmitters. About twenty transmitter chemicals have been identified, and to judge from the rate of new discoveries the total number may exceed fifty. Transmitter molecules are much smaller than protein molecules but ar ...
APP Ch_3 Outline
... 2. The Action Potential Action Potential – A very brief shift in a Neuron’s electrical charge that travels along an axon. Absolute Refractory Period – Minimum length of time after an action potential during which another action potential cannot begin. Only about 1 or 2 Milliseconds. All-Or-Non ...
... 2. The Action Potential Action Potential – A very brief shift in a Neuron’s electrical charge that travels along an axon. Absolute Refractory Period – Minimum length of time after an action potential during which another action potential cannot begin. Only about 1 or 2 Milliseconds. All-Or-Non ...
Neuron (Nerve Cell)
... • Increases the speed of transmission of nerve impulses (up to 150 times faster) • Only associated with axons, not ...
... • Increases the speed of transmission of nerve impulses (up to 150 times faster) • Only associated with axons, not ...
Physiological Effects of a Warm Up on Skeletal Muscle
... Greater strength of contraction due to improved elasticity of muscle fibres. Faster speed of contraction due to an increased speed of nerve transmission to the muscle fibres. Faster speed of contraction and relaxation of the muscle fibres due to a higher muscle temperature. Increased speed o ...
... Greater strength of contraction due to improved elasticity of muscle fibres. Faster speed of contraction due to an increased speed of nerve transmission to the muscle fibres. Faster speed of contraction and relaxation of the muscle fibres due to a higher muscle temperature. Increased speed o ...
PSNS 2nd Lecture 1433 - Home - KSU Faculty Member websites
... Release of ACh is dependent on extracellular Ca2+ and occurs when an action potential reaches the terminal and triggers sufficient influx of Ca2+ ions The increased Ca2+ concentration "destabilizes" the storage vesicles by interacting with special proteins associated with the vesicular membrane ...
... Release of ACh is dependent on extracellular Ca2+ and occurs when an action potential reaches the terminal and triggers sufficient influx of Ca2+ ions The increased Ca2+ concentration "destabilizes" the storage vesicles by interacting with special proteins associated with the vesicular membrane ...
Special Sense
... (3) Basal cells produce support cells which in turn become receptor cells Taste buds are located in papillae ...
... (3) Basal cells produce support cells which in turn become receptor cells Taste buds are located in papillae ...
Final Exam - Creighton Biology
... vv. a change in the conformation of retinal. ww. the phosphorylation of retinal. xx. the deamination of retinal. Which of the following is not true of hormones? yy. They can be released by glands. zz. They can be released by modified neurons. aaa. Their release can be triggered by other hormones. bb ...
... vv. a change in the conformation of retinal. ww. the phosphorylation of retinal. xx. the deamination of retinal. Which of the following is not true of hormones? yy. They can be released by glands. zz. They can be released by modified neurons. aaa. Their release can be triggered by other hormones. bb ...
Stages in Neuromuscular Synapse Elimination
... cortex with appropriate eye-specific inputs are present before the critical period for ocular dominance column plasticitiy. •Columns develop in the absence of visual system input and before the development of retinal photoreceptors. ...
... cortex with appropriate eye-specific inputs are present before the critical period for ocular dominance column plasticitiy. •Columns develop in the absence of visual system input and before the development of retinal photoreceptors. ...
chapter 43 The Nervous System
... membrane. This electrical potential then is an attractive frr'll:: pulling K+ ions back inside the cell. The balance between diffusional force -and the electrical force produces ""equilibrium potential (table 43.1). By relating the work cby each type of force, we can derive a quantitative expressz f ...
... membrane. This electrical potential then is an attractive frr'll:: pulling K+ ions back inside the cell. The balance between diffusional force -and the electrical force produces ""equilibrium potential (table 43.1). By relating the work cby each type of force, we can derive a quantitative expressz f ...
Chapter 41
... 1. Total number of fibers transmitting. 2. The specific fiber carrying the action potential. 3. The total number of action potentials passing over a given fiber. 4. The frequency of the action potentials passing over a given fiber. ...
... 1. Total number of fibers transmitting. 2. The specific fiber carrying the action potential. 3. The total number of action potentials passing over a given fiber. 4. The frequency of the action potentials passing over a given fiber. ...
General Physiology
... • osmotic pressure is dependant on the number of particles in solution • If the total osmotic pressure of two solutions are equal, they are said to be isotonic • If solution A has a greater osmotic pressure than solution B, A is said to be hypertonic to B • If solution A has a less osmotic pressure ...
... • osmotic pressure is dependant on the number of particles in solution • If the total osmotic pressure of two solutions are equal, they are said to be isotonic • If solution A has a greater osmotic pressure than solution B, A is said to be hypertonic to B • If solution A has a less osmotic pressure ...
Nerve sheaths:
... The axon terminate in a single bulb like end called baton Because the nerve impulse always transmitted in one direction there are two elements forming the synapse A. Axon button also called presynaptic neuron or synaptic bag B. The dendrite receive the button is called postsynaptic process In be ...
... The axon terminate in a single bulb like end called baton Because the nerve impulse always transmitted in one direction there are two elements forming the synapse A. Axon button also called presynaptic neuron or synaptic bag B. The dendrite receive the button is called postsynaptic process In be ...
End-plate potential
End plate potentials (EPPs) are the depolarizations of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called ""end plates"" because the postsynaptic terminals of muscle fibers have a large, saucer-like appearance. When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters (mostly acetylcholine) are exocytosed and the contents are released into the neuromuscular junction. These neurotransmitters bind to receptors on the postsynaptic membrane and lead to its depolarization. In the absence of an action potential, acetylcholine vesicles spontaneously leak into the neuromuscular junction and cause very small depolarizations in the postsynaptic membrane. This small response (~0.5mV) is called a miniature end plate potential (MEPP) and is generated by one acetylcholine-containing vesicle. It represents the smallest possible depolarization which can be induced in a muscle.