Characteristics of Sensations, and Classification of Receptors Flashcards
A ______ is defined as the conscious or subconscious awareness of changes in the
external or internal environment.
sensation
Special senses include
Smell Taste Vision Hearing Equilibrium
General senses include
Somatic
Visceral
Somatic senses include…
tactile
thermal
pain
proprioceptive sensations
Visceral senses provide sensations from
Internal Organs
What are these?
(a) There must be a stimulus.
(b) A sensory receptor must convert the stimulus to an electrical signal.
(c) A nerve pathway conducts the information to the brain.
(d) A region of the brain translates or integrates the nerve impulse into a sensation.
conditions that must be satisfied for a sensation to occur
Perceptions are the conscious awareness and interpretation of sensations. This is primary function of what part of the brain?
cerebral cortex
_______ is the decrease in the strength of a sensation during prolonged exposure
to a stimulus
Adaption
What causes the perception of a sensation to fade or disappear even though the stimulus is still present.
Adaption
What type of receptor
Detects mechanical deformation of adjacent cells
Mechanoreceptors
What type of receptor
detect changes in temperature
Thermoreceptors
What type of receptor?
detects pain
Nociceptors
What type of receptor detects light?
Photoreceptors
What type of receptor detects the presence of chemicals in solution?
Chemoreceptors
What type of receptor detects the osmotic pressure of fluids?
Osmoreceptors
