...cells. A typical neuron consists of a...
...of events: Motor neuron releases acetylcholine into...
...cleft between the neuron and muscle fiber....
...are transmitted from neuron to neuron, to...
...from neuron to neuron, to organs, and...
...types: Envelop the neuron to form and...
...neurons. A typical neuron has cell body,...
...terminal and another neuron is called a...
...information. A resting neuron is the one...
...membrane of the neuron must maintain a...
...fluid surrounding the neuron is positive. An...
...potential of a neuron is 70 mV...
...out of the neuron and K+ into...
...K+ into the neuron using sodium-potassium pumps....
...out of the neuron cannot easily pass...
...pumped into the neuron can diffuse out....
...membrane of a neuron can depolarize by...
...depends on the neuron type. Some neurons...
...permeability of a neuron to sodium ions...
...ions cause the neuron to become more...
...calcium ions, the neuron is less excitable...
...lowers making the neuron closer to firing....
...or between a neuron and an effector:...
...muscle and a neuron. Presynaptic neuron and...
...a neuron. Presynaptic neuron and postsynaptic neuron....
...neuron and postsynaptic neuron. Signals across the...
...ions from one neuron to the next...
...of the postsynaptic neuron. TYPES OF NEUROTRANSMITTERS...
...Each type of neuron is thought to...
...neurotransmitter. A postsynaptic neuron may have more...
...on the postsynaptic neuron. Receptors are proteins...
...may bring the neuron closer to firing,...
...bringing the postsynaptic neuron close to firing....
...an impulse. Each neuron may synapse with...
...Convergence: a single neuron receives signals from...
...a single presynaptic neuron stimulates many postsynaptic...
...slightly depolarizes a neuron so another presynaptic...
...so another presynaptic neuron may stimulate it...
...reverberating circuit a neuron may fire many...
...times. The postsynaptic neuron synapses with an...
...with the presynaptic neuron. Chapter 40 NERVOUS...
...in the postsynaptic neuron are slower but...
...the effector. Preganglionic neuron has the cell...
...with the postganglionic neuron. Postganglionic neuron is...
...postganglionic neuron. Postganglionic neuron is entirely outside...
...receptors consists of Neuron endings. Specialized cells...
...turn causes the neuron to fire action...
...specialized muscle or neuron cells that produce...
...the heart. Parasympathetic neuron releases acetylcholine Acetylcholine...
...heart's contractions. Sympathetic neuron releases norepinephrine. Norepinephrine...

...form nervous systems Neuron Structure and Synapses....
...and Synapses. The neuron is the structural...
...conducted along a neuron. Dentrite cell body...
...Circuits. Single presynaptic neuron several postsynaptic neurons....
...neurons single postsynaptic neuron. Circular paths. Supporting...
...potential of a neuron give rise to...
...this time the neuron cannot depolarize in...
...open the postsynaptic neuron can depolarize or...
...depolarize the postsynaptic neuron. The binding of...
...hyperpolarizes the postsynaptic neuron. The binding of...
...hyperpolarize a postsynaptic neuron. 6. The same...
...when a postsynaptic neuron displays decreased responsiveness...
...when a postsynaptic neuron displays increased responsiveness...
...7. Research on neuron development and neural...

...are bundles of neuron extensions tightly wrapped...
...OF NEURONS 1) Neuron structure Nerve cells...
...neurons. A typical neuron has cell body,...
...terminal and another neuron is called a...
...receptor ? sensory neuron ? interneuron in...
...cord ? motor neuron ? effector organ...
...a cluster of neuron cell bodies that...
...types: Envelop the neuron to form and...
...potential of a neuron. Most animal cells...
...membrane. A resting neuron is the one...
...membrane of the neuron must maintain a...
...fluid surrounding the neuron is positive. An...
...potential of a neuron is 70 mV...
...(stimulus) in the neuron's environment. Graded potentials...
...Depolarization of a neuron’s membrane is graded...
...membrane of a neuron can depolarize by...
...or between a neuron and an effector...
...muscle and a neuron. Presynaptic neuron and...
...a neuron. Presynaptic neuron and postsynaptic neuron....
...neuron and postsynaptic neuron. Signals across the...
...directly from one neuron to the next....
...ions from one neuron to the next...
...of the postsynaptic neuron. Synaptic vesicles at...
...in the postsynaptic neuron. Neurotransmitters are quickly...
...by the presynaptic neuron. Removal of neurotransmitters...
...in the postsynaptic neuron. This is called...
...synaptic transmission. Each neuron may synapse with...
...of the postsynaptic neuron. Several synaptic terminals...
...on one postsynaptic neuron have a cumulative...
...summation the presynaptic neuron(s) transmit to the...
...to the postsynaptic neuron in rapid succession....
...Each type of neuron is thought to...
...neurotransmitter. A postsynaptic neuron may have more...
...in the postsynaptic neuron are slower but...
...produced by the neuron membrane. It is...

...Main Parts: 3424555227965Sensory Neuron 00Sensory Neuron Cell...
...3424555227965Sensory Neuron 00Sensory Neuron Cell Body –...
...long Dendron 351282025400Motor Neuron 00Motor Neuron 365569528448000Relatively...
...351282025400Motor Neuron 00Motor Neuron 365569528448000Relatively short axon...
...from a sensory neuron either to a...
...to a motor neuron or to another...
...to another relay neuron. Properties: A number...
...of a Motor Neuron Long axon Can...
...Spinal Cord Relay Neuron Motor Neuron Effector...
...Relay Neuron Motor Neuron Effector Muscle The...
...Muscle The relay neuron allows the impulse...
...reflex arc (two neuron spinal reflex arc)...
...neurons. The presynaptic neuron communicates with the...
...with the postsynaptic neuron by releasing a,...
...in the postsynaptic neuron The neurotransmitter in...
...of the presynaptic neuron, across the synapses...
...and Integration One neuron may synapse with...
...e.g. A motor neuron in the spinal...

...receptors consists of Neuron endings. Specialized cells...
...diverging circuits one neuron triggers responses of...
...E. g. one neuron from the brain...
...is a sensory neuron, like in the...
...with the sensory neuron. The amount of...
...by the sensory neuron. Integration Integration is...
...in the sensory neuron. The amplitude or...
...of events: Motor neuron releases acetylcholine into...
...cleft between the neuron and muscle fiber....
...by a single neuron, but each branched...
...each branched motor neuron may enervate many...
...a single motor neuron and the many...
...When a motor neuron fires, all the...
...fibers the motor neuron controls. The activation...

...out around the neuron cell body are...
...glial cell c. neuron F, c b....
...part of a neuron which contains the...
...extend from the neuron, allowing it to...
...function of the neuron's dendrite is to...
...b. regulate the neuron's life processes c....
...part of the neuron that carries outgoing...
...either to another neuron or 30 ***...
...function of the neuron's axon is to...
...b. regulate the neuron's life processes c....
...five 11. Each neuron has ______ axon(s)....
...d b. afferent neuron c. cell nucleus...
...*** a. a neuron and its synapses...
...18. Within a neuron, information always flows...
...c. insulate the neuron so it can...
...from outside the neuron and carry them...
...and outside the neuron are ______. 31-32...
...charge inside the neuron is ______ the...
...charge outside the neuron. F, b a....
...membrane of a neuron is ______. 31...
...body of a neuron must first pass...
...charge inside a neuron is negative, in...
...*** outside, the neuron is said to...
...34. When a neuron is polarized, ______....
...35. When a neuron is polarized, ______....
...have entered the neuron to make the...
...the outside, the neuron is said to...
...by which a neuron is depolarized in...
...flow into a neuron and depolarize it,...
...flow into a neuron and depolarize it,...
...we say the neuron has ______. 32...
...will prevent a neuron from firing. F,...
...(intensity) of a neuron's action potential depends...
...excitation. c. A neuron fires in response...
...to cause a neuron to fire is...
...firing of a neuron produces an impulse...
...32-33 a. a neuron must be receiving...
...all c. a neuron fires at full...
...all c. a neuron fires at full...
...dendrites on a neuron must receive messages...
...messages telling the neuron to fire or...
....27 47. A neuron is likely to...
...in a single neuron? 32-33 *** a....
...*** a. The neuron may fire during...
...each time the neuron fires. 2 yr.:...
...travels through the neuron. F, c b....
...after firing, a neuron cannot fire again...
...in which a neuron is returning to...
...potential in each neuron that fires. A,...
...firing in each neuron. d. By increasing...
...firing in each neuron. 4 yr.: 72%...
...b. Within a neuron, information flows from...
...*** a. The neuron fires in response...
...impulse. d. The neuron may fire during...
...dendrite of another neuron is called 33...
...terminal of one neuron, the synaptic cleft,...
...of the next neuron is called the...
...surface of a neuron so that scientists...
...of that particular neuron is called ______....
...Questions 302. Define neuron, axon, dendrite, cell...
...by which a neuron moves from a...
...*** of one neuron to the beginning...

...efferent neurons Each neuron is either afferent...
...a single preganglionic neuron S – ten...
...between the motor neuron and the muscle...
...of the postsynaptic neuron Table 7.4 Sympathetic...

...is a sensory neuron, a larger receptor...
...not a sensory neuron, a larger receptor...
...by the postsynaptic neuron. Many sensory neurons...
...onto a sensory neuron. Unlike the other...
...of a motor neuron releases the neurotransmitter...
...When the motor neuron input stops, the...
...a single motor neuron, but each branched...
...each branched motor neuron may synapse with...
...a single motor neuron and all the...
...When a motor neuron produces an action...
...fibers the motor neuron controls, from a...

...consists of mainly neuron cell bodies, dendrites,...
...elimination. A developing neuron forms many synapses,...
...activity of the neuron stabilizes some synapses...
...into adulthood. Together, neuron and synapse elimination...
...involves a presynaptic neuron that releases the...
...in this presynaptic neuron, which must arrive...