Overview of Sensation and Somatic Senses Flashcards
Overview of Sensation and Somatic Senses from LEC [information provided all came from the PowerPoint presentations in Moodle]
It is the conscious or subconscious awareness of changes in the external or internal environment.
Sensation
This type of sense include tactile sensations and activities from organs.
General senses
What type of sense are visceral senses?
General senses
The type of sense that include smell, taste, vision, hearing, and equilibrium.
Special senses
What needs to occur in order to activate certain sensory neurons?
A stimulus or change in environment
What converts the stimulus to an electric signal and can produce nerve impulses?
A sensory receptor
From the neural pathway, where does the nerve impulse start and end?
From the sensory receptor to the brain
What receives and integrates nerve impulses into a sensation?
A region of the brain or thalamus
What is the conscious awareness and
interpretation of sensations?
Perception
Perception is a function of which region of the brain?
Cerebral cortex
It is a decrease in sensation during a prolonged stimulus.
Adaption
What are the three classifications of sensory receptors [Structure]?
Free nerve endings, Encapsulated nerve endings, and separate cells
Bare dendrites associated with pain, thermal, tickle and itch.
Free nerve endings
Dendrites enclosed in a connective tissue capsule associated with pressure, and vibration.
Encapsulated nerve endings
Sensory receptors are classified into two.
Structure and Function