Chapter 3 Flashcards
(40 cards)
Neutral pathways are associated with ____ that are repeated more frequently will be strengthened and reinforced
Behaviors
The ability of the brain to change and adapt when an individual is exposed to new experiences. It is the lifelong ability to alter or make changes in its structure when exposed to new information.
Neuroplasticity
The ____ is able to reorganize pathways to create new connections and create new neurons in response to the new experiences.
Brain
The basic unit of the nervous system. It’s is a nerve cell that receives and sends electrical signals within the body
Neuron
Nerve cells that transmit information to the central nervous system (spinal cord and brain) includes sight,smell, hearing, taste, and touch
Sensory nerves
Nerve cells that transmit directions to muscles for movement
Motor neurons
Nerve cells that act as a link between the sensory and motor neurons. They transmit information via neurotransmitters
Interneurons
Chemicals that allow the signals from one neuron to the next across a synaptic cleft
Neurotransmitters
The space between two neurons
Synaptic cleft
Cell body, it maintains the function of the neuron, integrates and transmits information to the other cells
Soma
The projection of a nerve cell that conducts impulses from the neuron. They take the information away from the cell body
Axon
The projection that gathers information from other neurons and directs that information to the cell body. They bring information to the cell body.
Dendrites
Axon that is covered a white sheath or cover
Myelin sheath
Critical to neural transmission. Allow for rapid transmission of an electrical impulse along the myelinated nerve fiber.
Myelin sheath
Myelin sheath are ___ times faster than unmyelinated fiber
50
Central nervous system is made up of the
Brain and spinal cord
Peripheral nervous system is composed of
Sensory and motor neurons that gather sensory information( touch(
The Peripheral nervous system
consists of
spinal nerves and cranial nerves.
The PNS consists of two parts:
Somatic nervous system: carries motor (movement) and sensory (hearing, touch, etc.) information to and from the CNS.
Autonomic nervous system:
innervates muscles and glands for involuntary actions (gland secretions) and is responsible for the control of visceral functions: heart, digestion, respiration.
Trigeminal Nerve
Innervation of speech production muscles
Facial Nerve
Flattening and tensing of the soft palate(velum) and tongue retraction
Glossopharyngeal Nerve
Functions related to the tongue and the pharynx.
Sensory information relative to swallowing.
Hypoglossal Nerve
Innervation of the intrinsic (internal) and extrinsic (external muscles of the tongue.