Lecture 15 Sensory Systems Flashcards
Types of Sensory Systems
General senses
Special senses
What area does general senses focus on?
Body (Skin, organs, joints)
What area does special senses focus on?
Head (Eyes, Ears, Nose, Mouth)
What are sensory receptors?
Specialized cells/structure that collect information from the environment
Define Sensation
A feeling when the brain is aware of an impulse
Define Perception
Person’s view of the stimulus
Types of Receptors
Chemoreceptors
Pain receptors
Thermoreceptors
Mechanoreceptors
Photoreceptors
Osmoreceptors
What’s Chemoreceptor?
Respond to changes in chemical concentration
Role of pain receptors
Responds to tissue damage
Role of thermoreceptor
Respond to changes in temperature
Mechanoreceptors
Respond to mechanical forces
Role of Photoreceptors
Respond to light
Role of Osmoreceptor
Respond to changes in solute concentration
What does Exteroceptive senses do?
Senses associated with body surfaces
What does Visceroceptive senses do?
Senses associated with changes in the viscera
What does Proprioceptive senses do?
Senses associated with changes in muscles and tendons
What does Olfactory receptors respond to?
Vaporized Chemicals
What’s Rhinitis?
Inflammation of the lining of the nose caused by allergic reaction, viral
infection, sinusitis, or chemical irritants
What’s Epistaxis?
Nosebleed caused by disease, trauma,
hypertension, leukemia, or fever
Whats Anosmia?
Loss sense of smell
Where are taste buds located?
Papillae of tongue, roof of mouth, cheeks and walls of pharynx
What does taste cells function as?
Receptors
Taste hairs are…
Sensitive parts of taste cells
What are 4 taste sensations stimmed by?
Sweet (stimmed by carbs)
Sour (stimmed by acids)
Salty (stimmed by salts)
Bitter (stimmed by organic compounds)
What’s myopia?
Near sighted
What’s Hyperopia?
Far sight
Define Age-related macular degeneration
Chronic condition that affects central vision
What is a cataract?
Clouding inside the eye
What’s Glaucoma?
Slowly losing vision
