Other Senses

Question 1

Olfactory pathway

Answer 1

Nostril ➡️ nasal cavity ➡️ Olfactory nerve ➡️ olfactory bulb ➡️ olfactory tract ➡️ Limbic system (brain area)

Question 2

Pheromones

Answer 2

Chemicals given off by animals that have an effect on social, foraging, and sexual behavior in other members of that species

Question 3

Taste buds

Answer 3

Detects dissolved compounds in papillae (little bumps on tongue)

Sour, sweet, salty, butter, and umami (savory)

Question 4

Somatosensation

Answer 4

Refers to the 4 touch modalities:
Pressure
Vibration
Pain
Temperature

Question 5

Two point threshold

Answer 5

The minimum distance between two points of stimulation on the skin such that the points will be felt as two distinct stimuli

Question 6

Physiological zero

Answer 6

The normal temperature of the skin (between 86 and 97F) to which objects are compared to determine if they feel “warm” or “cold”

Question 7

Nociceptors

Answer 7

Responsible for pain perception

Question 8

Gate theory of pain

Answer 8

States that pain sensation is reduced when other somatosensory signals are present

Special “gating” mechanisms can turn pain signals on or off, affecting whether or not we perceive pain

Question 9

Kinesthetic sense (proprioception)

Answer 9

Refers to the ability to tell where ones body is in three dimensional space

Example: even with your eyes closed, you could still describe the location and position of your hand

Question 10

The only sense that doesn’t pass through the thalamus but passes through higher order brain centers ?

Answer 10

Smell

Question 11

Somatosensory cortex is found in which lobe?

Answer 11

Parietal

Question 12

Olfactory chemoreceptors (olfactory nerves)

Answer 12

Detect volatile or aerosolized chemicals