Chemical and Body Senses Flashcards
Unit 3
Taste buds are chemical sensitive receptors that respond to four basic stimulus qualities:
Sweet, sour, salty, and bitter
What is the ‘fifth’ category?
Umami
How long does it take to replace taste buds?
10 Days
What else influences taste? (3)
Smell, texture, and temperature
When one sense affects another sense:
Sensory Interaction
What do smells originate from?
Gases and chemicals in the air.
When is the sense of smell sparked?
When molecules of a substance enter the nasal passages and meet the olfactory cells.
Where does smell meet the olfactory cells?
The Olfactory Epithelium
What is the term for losing the sense of smell?
Anosmia
Why are strong memories made through the sense of smell?
Because the smell and memory regions are closely connected (Hippocampus)
What sensations is touch a mixture of? (3)
Temperature, pressure, and pain
What does a cell release when it is injured?
Substance P
What does Substance P do?
Transmits pain messages to the brain
What are the most sensitive areas in the body?
The nose and upper lip
What two temperatures create ‘hotness’?
Warm and Cold
The level of stimulation at which pain is first perceived:
Pain Threshold
What is the disease where people cannot feel pain?
CIPA
Nerve receptors in the _____ _____ lead to specific areas of the brain related to pain:
Spinal Cord
Neural receptors, ____, can be stimulated and close the gate, reducing the experience of pain:
Endorphins
What theory is referred to in questions 18 & 19?
Gate-Control Theory
Gives the brain info about where specific body parts are located:
Kinesthesis
What keep track of where are the body parts are?
The Muscles and Joints
The sense that informs the body of its orientation and balance:
Vestibular Sense
Located in the inner ear and contains fluid:
Semicircular Canals
When the fluid moves a lot, you feel:
Dizzy
An unusual condition in which exposure to one sensation evokes an additional one:
Synesthesia
