ANAT 100 Block Theory 2 || with A+ Guaranteed Solutions.
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ANAT 100 Block Theory 2
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ANAT 100 Block Theory 2
What are the three steps of the nervous system? correct answers 1. Sensory input
2. Integration
3. Motor output
What is sensory input? correct answers Sensory input from the environment is detected by sensory nerves and travels through the body to communicate with other nerve cells
What is ...
ANAT 100 Block Theory 2 || with A+ Guaranteed Solutions.
What are the three steps of the nervous system? correct answers 1. Sensory input
2. Integration
3. Motor output
What is sensory input? correct answers Sensory input from the environment is detected by
sensory nerves and travels through the body to communicate with other nerve cells
What is integration? correct answers Processing and interpretation of sensory input
What is motor output? correct answers a response to integrated stimuli; the response activates
muscles or glands by sending motor output through motor nerves
What are the two principal subdivisions of the nervous system? correct answers Central
Peripheral
What is the function of the CNS? correct answers »Where all signals come to and from
»Where they are integrated
»Where information can be stored
What is the function of the PNS? correct answers System that brings those signals to and from
the CNS
What are the two divisions that the PNS can be further broken down into? correct answers
Sensory (afferent) division
Motor (efferent) division
What does the sensory division do? correct answers Relays information to CNS
Sensing things such as sight, smell, touch and even pain
Sends the information to the CNS through sensory neurons
What does the motor division do? correct answers Relays information from CNS to target cells
The actual response that is elicited
Signal comes from the CNS, the brain, or spinal cord and is relayed to a target cell through
efferent neurons
What subdivisions can the motor (efferent) division be further divided into? correct answers
Somatic
Autonomic
What is the function of the somatic nervous system? And how does it do that? correct answers
Controls voluntary movement
Signal comes from the CNS through the efferent neurons to a target skeletal muscle cell, eliciting
movement of that muscle
, What is the function of the autonomic nervous system? correct answers Controls involuntary
movement
What can the autonomic nervous system be further divided into? correct answers Sympathetic -
fight or flight
Parasympathetic - rest and digest
What do neurons do? correct answers Structural units of the nervous system.
Allow for communication within and between the CNS and PNS.
Can generate and transmit rapid electrical signals to other neurons
What does the cell body do in a neuron? correct answers Functions to transfer electrical signals
from the dendrites to the axon
Also called the 'soma'
Houses the nucleus and other organelles
What does the dendrites do in a neuron? correct answers Receive the neuronal signal form other
neurons and transfer those signals to the cell body
What does the axon do in a neuron? correct answers Carry the signal from the cell body to the
axon terminals, where the signal is then transferred to other neurons or organs
What is the direction of a nerve impulse? correct answers Unidirectional
What are the characteristics of a pseudo-unipolar neuron? correct answers Have one cellular
process that splits into a dendrite and an axon.
Example: general sensory nerves
What are the characteristics of a bipolar neuron? correct answers Have one dendrite and one
axon that extend directly from the cell body
Have two distinct cellular processes
Only found in special sense, like sight and hearing
What are the characteristics of a multipolar neuron? correct answers Have multiple dendrites and
one axon, summing to three or more cellular processes
Number of dendrites is variable
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