BIO 201 - Practical 3-ASU- Study
Guide Questions With 100% Correct
Answers.
Neuron (appearance) - Answer round bodies with fibrous processes (axon and dendrites)
extending from the neurosoma; surrounded by smaller glial cells which lack axons and dendrites
Neuron (functions) - Answer internal communication
Neuron (locations) - Answer brain, spinal cord, nerves, ganglia
Neuron Body - Answer - Soma
- houses the organelles and acts as a control center for the neuron
Neuron Dendrites - Answer branched projections which receive signals from other neurons
Neuron Axon - Answer carries signals away from the soma
Myelin Sheath - Answer lipid-rich insulation enveloping the axon
Node of Ranvier - Answer gaps in the myelination which allow for passage of ions
Oligodendrocyte - Answer - Neuroglia (Glial Cells)
- bulbous body with as many as 15 arms which envelop nerve fibers
Oligodendrocyte (locations) - Answer brain and spinal cord (central nervous system)
Schwann Cell - Answer - Neuroglia (Glial Cells)
- envelop a single nerve fibers in the peripheral nervous system (PNS)
Schwann Cell (locations) - Answer all nerves except the brain and spinal cord (peripheral
nervous system)
Gray Matter - Answer superficial in brain, deep in spinal cord
, White Matter - Answer - superficial in spinal cord, deep in brain
- myelin rich and contains tracts that connect parts of the brain and spinal cord
Central Nervous System (CNS) - Answer composed of the brain and spinal cord
Peripheral Nervous System (PNS) - Answer composed of any nerve or ganglia outside of the
CNS
Sensory (Afferent) Division - Answer carries signals from various receptors (sense organs and
nerve endings) to the CNS
Visceral Sensory Division - Answer carries signals from thoracic and abdominal viscera
Motor (Efferent) Division - Answer carries signals from the CNS to glands and muscle cells
Visceral Motor Division (Autonomic Nervous System, ANS) - Answer carries signals to glands,
cardiac muscle, and smooth muscle; responsible for visceral reflexes
Sympathetic Division - Answer arouses the body for action; "Fight or flight"
Parasympathetic Division - Answer has calming effect; "Rest and digest" or "Feed and breed"
Somatic Motor Division - Answer carries signals to skeletal muscles
Rostral - Answer - CNS directional term
- towards the nose
Caudal - Answer - CNS directional term
- towards the tail
Gyri/Gyrus - Answer thick, rounded folds
Sulci/Sulcus - Answer shallow grooves
Fissure - Answer deep grooves that separate brain structures
Guide Questions With 100% Correct
Answers.
Neuron (appearance) - Answer round bodies with fibrous processes (axon and dendrites)
extending from the neurosoma; surrounded by smaller glial cells which lack axons and dendrites
Neuron (functions) - Answer internal communication
Neuron (locations) - Answer brain, spinal cord, nerves, ganglia
Neuron Body - Answer - Soma
- houses the organelles and acts as a control center for the neuron
Neuron Dendrites - Answer branched projections which receive signals from other neurons
Neuron Axon - Answer carries signals away from the soma
Myelin Sheath - Answer lipid-rich insulation enveloping the axon
Node of Ranvier - Answer gaps in the myelination which allow for passage of ions
Oligodendrocyte - Answer - Neuroglia (Glial Cells)
- bulbous body with as many as 15 arms which envelop nerve fibers
Oligodendrocyte (locations) - Answer brain and spinal cord (central nervous system)
Schwann Cell - Answer - Neuroglia (Glial Cells)
- envelop a single nerve fibers in the peripheral nervous system (PNS)
Schwann Cell (locations) - Answer all nerves except the brain and spinal cord (peripheral
nervous system)
Gray Matter - Answer superficial in brain, deep in spinal cord
, White Matter - Answer - superficial in spinal cord, deep in brain
- myelin rich and contains tracts that connect parts of the brain and spinal cord
Central Nervous System (CNS) - Answer composed of the brain and spinal cord
Peripheral Nervous System (PNS) - Answer composed of any nerve or ganglia outside of the
CNS
Sensory (Afferent) Division - Answer carries signals from various receptors (sense organs and
nerve endings) to the CNS
Visceral Sensory Division - Answer carries signals from thoracic and abdominal viscera
Motor (Efferent) Division - Answer carries signals from the CNS to glands and muscle cells
Visceral Motor Division (Autonomic Nervous System, ANS) - Answer carries signals to glands,
cardiac muscle, and smooth muscle; responsible for visceral reflexes
Sympathetic Division - Answer arouses the body for action; "Fight or flight"
Parasympathetic Division - Answer has calming effect; "Rest and digest" or "Feed and breed"
Somatic Motor Division - Answer carries signals to skeletal muscles
Rostral - Answer - CNS directional term
- towards the nose
Caudal - Answer - CNS directional term
- towards the tail
Gyri/Gyrus - Answer thick, rounded folds
Sulci/Sulcus - Answer shallow grooves
Fissure - Answer deep grooves that separate brain structures
