ANAT 100 Block Theory 2 Questions and Answers Latest Update 2025-2026
What are the three steps of the nervous system? - Answers 1. Sensory input
2. Integration
3. Motor output
What is sensory input? - 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? - Answers Processing and interpretation of sensory input
What is motor output? - 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? - Answers Central
Peripheral
What is the function of the CNS? - Answers »Where all signals come to and from
»Where they are integrated
»Where information can be stored
What is the function of the PNS? - 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? - Answers Sensory
(afferent) division
Motor (efferent) division
What does the sensory division do? - 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? - 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? - Answers Somatic
, Autonomic
What is the function of the somatic nervous system? And how does it do that? - 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? - Answers Controls involuntary
movement
What can the autonomic nervous system be further divided into? - Answers Sympathetic - fight
or flight
Parasympathetic - rest and digest
What do neurons do? - 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
Neuron Structure - Answers cell body, dendrites, axon
What does the cell body do in a neuron? - 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? - Answers Receive the neuronal signal form other
neurons and transfer those signals to the cell body
What does the axon do in a neuron? - 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? - Answers Unidirectional
What are the characteristics of a pseudo-unipolar neuron? - Answers Have one cellular process
that splits into a dendrite and an axon.
What are the three steps of the nervous system? - Answers 1. Sensory input
2. Integration
3. Motor output
What is sensory input? - 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? - Answers Processing and interpretation of sensory input
What is motor output? - 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? - Answers Central
Peripheral
What is the function of the CNS? - Answers »Where all signals come to and from
»Where they are integrated
»Where information can be stored
What is the function of the PNS? - 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? - Answers Sensory
(afferent) division
Motor (efferent) division
What does the sensory division do? - 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? - 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? - Answers Somatic
, Autonomic
What is the function of the somatic nervous system? And how does it do that? - 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? - Answers Controls involuntary
movement
What can the autonomic nervous system be further divided into? - Answers Sympathetic - fight
or flight
Parasympathetic - rest and digest
What do neurons do? - 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
Neuron Structure - Answers cell body, dendrites, axon
What does the cell body do in a neuron? - 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? - Answers Receive the neuronal signal form other
neurons and transfer those signals to the cell body
What does the axon do in a neuron? - 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? - Answers Unidirectional
What are the characteristics of a pseudo-unipolar neuron? - Answers Have one cellular process
that splits into a dendrite and an axon.
