Olfaction, Gustation, and General Senses

olfaction

sense of smell

12 million

How many chemoreceptors are there for smell?

gustation

sense of taste

within the grooves of the papillae

Where are tastes buds located?

10,000

How many taste buds are there?

no, there is other areas of the mouth as well

Do taste buds just exist on the tongue?

50-150 taste cells/taste bud

How many taste cells are there per bud?

dissolved

In order to elicit a response with olfaction and gustation, chemicals must be…

sensory adaptation

olfaction and gustation show…

sweet, salty, sour, bitter, alkaline, metallic, and umami

What are the 7 taste chemoreceptors?

control water uptake and detect water intake

What do water chemoreceptors do?

general senses

senses that occur in more than one specific location or organ

guts, heart, and glands

visceral senses include…

touch/pressure, temp, pain, and stretch receptor

somatic senses include…

touch and pressure receptor

most common receptor of the skin

77 F

heat receptors are most sensitive to temps over…

pain/burning sensation

above 113 F stimulates…

68 F

cold receptors are most sensitive to temps under…

pain/freezing sensation

below 50 F stimulates…

the brain itself

pain receptors are located everywhere except…

sensory adaptation

pain receptors show limited…

enkephalins and endorphins

pain can be regulated in the brain and spinal cord by…

referred pain

occurs when viscera share common nerve pathway with another region or surface

proprioceptors

stretch receptors are known as…

muscle spindle organs

type of stretch receptor that is located within the muscle

golgi tendon organ

type of stretch receptor that is located within tendon near muscle