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PNS: Sensations

Horizontales
Ganglia in the PNS contain the cell bodies of either sensory or motor _______, but rarely both.
_____________ are a collection of neuron cell bodies associated with nerves in the PNS.
The PNS consists of ___________ nerves and spinal nerves.
____________ (free) nerve endings of sensory neurons are particularly abundant in epithelia and connective tissue.
Each axon (or nerve fiber) is surrounded by __________, a delicate layer of loose connective tissue that also encloses the fiber's associated Schwann cells.
A coarser connective tissue wrapping, the perineurium, binds groups of axons into bundles called _________.
Sensory receptors are specialized to respond to changes in their environment, which are called __________.
Verticales
The PNS has two subdivisions, the motor (efferent) and ___________ (afferent) division.
Virtually all encapsulated receptors are mechanoreceptors, which includes tactile corpuscles, lamellar corpuscles, ____________ corpuscles, muscle spindles, tendon organs, and joint kinesthetic receptors.
A ____________ is a cord-like organ that is part of the peripheral nerves system
The major features of sensory perception are perceptual detection, ____________ estimation, spatial discrimination, feature abstraction, quality discrimination, and pattern recognition.
Receptors can be grouped into three receptors classes according to either their location or the location of the activating stimulus: exteroceptors, __________, proprioceptors.
A tough fibrous sheath, the _________, encloses all the fascicles to form the nerve.
The three ways to classify receptors are 1. by the type of stimulus they detect: 2. by their body location: 3. by their __________ complexity.
If there is damage to a cell body, but it remains intact, axons of ____________ nerves can regenerate but axons in the CNS cannot.
Sensation is the awareness of the changes in the ____________ and external environment.
Sensory input is interpreted in the _____________ cortex.