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PYC1501 HUMAN NERVE SYSTEM QUIZ QUESTIONS WITH CORRECT ANSWERS

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PYC1501 HUMAN NERVE SYSTEM QUIZ QUESTIONS WITH CORRECT ANSWERS Main parts of the neuron - ANSWERS soma (cell body), axons (transmit info), dendrites (receive info) axon terminals (conduct messages) Function of a neuron - ANSWERS Convey a message The Dendrites - ANSWERS Branch like extension...

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  • September 12, 2024
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  • PYC1501 HUMAN NERVE SYSTEM
  • PYC1501 HUMAN NERVE SYSTEM
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PYC1501 HUMAN NERVE SYSTEM
QUIZ QUESTIONS WITH CORRECT
ANSWERS

Main parts of the neuron - ANSWERS soma (cell body), axons (transmit info), dendrites (receive info)
axon terminals (conduct messages)



Function of a neuron - ANSWERS Convey a message



The Dendrites - ANSWERS Branch like extensions of the cell body, allows neurons to connect to a
large no of other neurons.



The cell body (soma) - ANSWERS Soma receives messages from other neurons through the
dendrites

Soma has one other extension called the axon



Axon - ANSWERS When the stimulation reaches a point the axon hillock initiates an impulse that
runs along the >>>>



fatty myelin sheath - ANSWERS Axons are enclosed in it

Insulates the axon

Separated by small gaps called nodes of Ranvier

Conducts impulse much faster

Impluse jumps from node to node



Axon terminal (telondendria) - ANSWERS Ends in a small node called Bouton terminal



Bouton terminal - ANSWERS Contains tiny containers called vesicles fill with neurotransmitters.
Chemical substances that play a roll in conducting a message



Synapse cleft - ANSWERS The gap at the junction of the synapse.

, Neurotransmitters - ANSWERS Regulate the communication between neurons



sensory neurons (afferent) - ANSWERS carry information from the senses to the brain



motor neurons (efferent) - ANSWERS Conduct messages from the spinal cord and the brain to the
muscles and glades



Nerve tract - ANSWERS When the nerve is in the spinal cord or brain



Nerve - ANSWERS When the nerve is in parts of the body (excluding brain/spinal cord



Impulse conduction - ANSWERS process by which messages are relayed in neurons, from one
neuron to the next



Electrical impulse - ANSWERS Begins in the first segment of the axon

Travels down the axon to the terminals because of electrical events at the cell membrane



Chemical impulse - ANSWERS determines if the impulse will be conducted across the gap



resting membrane potential - ANSWERS the electrical charge of a neuron when it is not active but
polarised



Cell Membrane - ANSWERS contains a mechanism that allows some ions through and prohibits
others



When a neuron is ready - ANSWERS + outside - inside



absolute refractory period - ANSWERS neuron doesnt respond to any stimulus

Axon cannot conduct an impulse



Refractory period - ANSWERS the membrane returns the soduim and potassium ions to the original
states

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