Nervous System Flashcards
What functional division of the nervous system conducts action potential from the sensory receptors to CNS?
Sensory division
What functional division of the nervous system conducts action potential from the CNS to the effector organs?
Motor division
What division of the autonomic nervous system maintains normal body homeostasis?
Parasympathetic division
What cells receive stimuli and conduct action potentials in the nervous system?
Neurons
What part of the neuron is shorter and receives stimuli and transmits them to the cell body?
Dendrites
What part of the neuron is longer and receives stimuli and transmits them away from the cell body?
Axon
True or False.
Neurons have the ability to undergo mitosis.
False.
Neurons do not divide.
What cells functions as a support and do not conduct action potentials?
Glial cells
What glial cells are active in the formation and maintenance of myelin in the CNS?
Oligodendrocytes
What kind of transport happens when the organelles and macromolecules synthesized in the cell body move from the perikaryon to the synaptic terminals via kinesin?
Anterograde transport
What kind of transport happens when the uptake of viruses, toxins, etc. moves from the periphery to the cell body via kinesin?
Retrograde transport
What refers to the gaps in myelin sheath?
Nodes of Ranvier
What type of neuron comprises the sensory neurons for the retina, olfactory epithelium, and the inner ear?
Bipolar neuron
What refers to the involuntary reaction in response to a stimulus applied to the periphery and transmitted to the CNS?
Reflex
What region of the brain refers to the little brain that is attached to the brainstem?
Cerebellum
What refers to the numerous folds in the surface of a cerebrum?
Gyri
True or False.
The left side of the brain controls the skeletal muscles on the left side of the body.
False.
The left side of the brain controls the skeletal muscles on the right side of the body.
What type of brain wave can you observe in a normal person who is awake but in a quiet resting state with the eyes closed?
Alpha waves
What type of brain wave can you observe in a normal person during intense mental activity?
Beta waves
What type of brain wave can you observe in a normal person who is in deep sleep?
Delta waves
What type of brain wave can you observe in a person who is experiencing frustration or those who have brain disorders?
Theta waves
What glial cells provide physical and metabolic support to the CNS neurons?
Astrocytes
What glial cells support myelinated and unmyelinated nerve cell fibers?
Schwann cells
What region in the central nervous system consists of myelinated axons?
White matter
