Nervous System (Anatomy: CNS, PNS)
OCC anatomy class. Chapters 12, 13,
14, Unit 4 Question and answers 100%
correct 2025/2026
What are the main functions of the nervous system? - correct answer ✔Acts as a central hub for;
- Motor (movement)
- Interpretation (sensations)
- Maintaining functionality of other organ
systems
Central Nervous System CNS - correct answer ✔- Contains; brain & spinal cord
- Functions as the central hub for
interpretation as well as direction
Peripheral Nervous system PNS - correct answer ✔- Contains; ganglia & nerves
- Functions as a highway for information to be passed on to effectors or the CNS
Somatic Sensory - correct answer ✔Touch, pain, pressure, vibration, temp, perception in skin, body
wall, and limbs. Special: Hearing, equilibrium and vision.
Visceral Sensory - correct answer ✔Stretch, pain, temp, chemical changes and irritation in viscera,
nausea, hunger. Special: taste and smell
Somatic motor - correct answer ✔Innervation of skeletal muscles, voluntary
, Visceral motor - correct answer ✔Innervation of smooth muscle, cardiac, muscle, & glands, involuntary
Interneurons - correct answer ✔always in CNS, in grey matter. Integrative- process, store, retrieve,
make decisions. 99% of all neurons.
Multipolar
[Structural Classes of Neurons] - correct answer ✔most common in CNS, two or more dendrites,
(motor, interneuron)
Bipolar
[Structural Classes of Neurons] - correct answer ✔one axon, one dendrite, found exclusively in;
Olfactory cells, retina, ear sensory
Unipolar
[Structural Classes of Neurons] - correct answer ✔single process from soma; "pseudounipolar";
Peripheral process (Dendrites that are embedded in an organ act as a receptor), Central process (central
hub), most common sensory neuron in body
Synapse - correct answer ✔Is where and action potential travels and "jumps" across to another nerve
or to the muscle/gland intended. It "jumps" by releasing chemicals via simple diffusion across the
synaptic cleft to receptors on the other side, this continues the action potential to its destination
Nerve - correct answer ✔Bundle of axons
Grey VS. White matter - correct answer ✔Grey matter is distinguished from white matter, in that grey
matter contains numerous cell bodies and relatively few myelinated axons, while white matter contains
relatively very few cell bodies and is composed chiefly of long-range myelinated axon tracts
Neurons - correct answer ✔a nerve cell
OCC anatomy class. Chapters 12, 13,
14, Unit 4 Question and answers 100%
correct 2025/2026
What are the main functions of the nervous system? - correct answer ✔Acts as a central hub for;
- Motor (movement)
- Interpretation (sensations)
- Maintaining functionality of other organ
systems
Central Nervous System CNS - correct answer ✔- Contains; brain & spinal cord
- Functions as the central hub for
interpretation as well as direction
Peripheral Nervous system PNS - correct answer ✔- Contains; ganglia & nerves
- Functions as a highway for information to be passed on to effectors or the CNS
Somatic Sensory - correct answer ✔Touch, pain, pressure, vibration, temp, perception in skin, body
wall, and limbs. Special: Hearing, equilibrium and vision.
Visceral Sensory - correct answer ✔Stretch, pain, temp, chemical changes and irritation in viscera,
nausea, hunger. Special: taste and smell
Somatic motor - correct answer ✔Innervation of skeletal muscles, voluntary
, Visceral motor - correct answer ✔Innervation of smooth muscle, cardiac, muscle, & glands, involuntary
Interneurons - correct answer ✔always in CNS, in grey matter. Integrative- process, store, retrieve,
make decisions. 99% of all neurons.
Multipolar
[Structural Classes of Neurons] - correct answer ✔most common in CNS, two or more dendrites,
(motor, interneuron)
Bipolar
[Structural Classes of Neurons] - correct answer ✔one axon, one dendrite, found exclusively in;
Olfactory cells, retina, ear sensory
Unipolar
[Structural Classes of Neurons] - correct answer ✔single process from soma; "pseudounipolar";
Peripheral process (Dendrites that are embedded in an organ act as a receptor), Central process (central
hub), most common sensory neuron in body
Synapse - correct answer ✔Is where and action potential travels and "jumps" across to another nerve
or to the muscle/gland intended. It "jumps" by releasing chemicals via simple diffusion across the
synaptic cleft to receptors on the other side, this continues the action potential to its destination
Nerve - correct answer ✔Bundle of axons
Grey VS. White matter - correct answer ✔Grey matter is distinguished from white matter, in that grey
matter contains numerous cell bodies and relatively few myelinated axons, while white matter contains
relatively very few cell bodies and is composed chiefly of long-range myelinated axon tracts
Neurons - correct answer ✔a nerve cell
