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Exploring Life Human Body Unit #2- Nervous System
CH 28 nervous system
17
Anatomy
10th Grade
03/17/2012

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Cards

Term
Name the "parts/organs of the nervous system: (4)
Definition
Brain, spinal cord, nervous tissue, neurons
Term
What is required to initiate (start) a nerve signal?
Definition
a stiumuli
Term
What is the function of a thermoreceptor?
Definition
to detect heat and cold stimuli
Term
What is the function of a mechanoreceptor?
Definition
to detect pressure stimuli
Term
What is the function of a photoreceptor?
Definition
to detect light stimuli
Term
What is the function of a pain receptor?
Definition
to detect painful stimuli
Term
The nervous system is broken into two parts:
Definition
CNS and PNS
Term
What substance allows a nerve signal to be transmitted from one nerve across the synaptic cleft to the next nerve?
Definition
neurotransmitters (a chemical)
Term
Which side of your brain controls the right side of your body?
Definition
left
Term
What is the function of the sensory division of the nervous system?
Definition
to receive stimuli from your sense organs
Term
Which part of a neuron receives stimuli?
Definition
the dendrite
Term
Which part of a neuron transmits the nerve signal?
Definition
the axon
Term
What is the coating of the axon called?
Definition
the meyelin sheath
Term
What is the function of the meyelin sheath?
Definition
To protect the axon and provide a faster transmission of the nerve signal.
Term
The sensory division is a part of the peripheral or central nervous system?
Definition
peripheral
Term
What is the function of the spinal cord?
Definition
To receive stimuli from the peripheral nervous system and transmit it to the brain, or bipass the brain in a reflex.
Term
What is the function of a motor neuron?
Definition
To direct a muscle to react to a stimuli.
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