Chapter 3: Sensation Marshall 210

chemical senses

taste and smell

Gustation

sense of taste (sweet, sour, salty, bitter, and umami)

taste buds

chemical receptors concentrated along the tip, edges, and back surface of the tongue

Taste uses

discrimination between nutrients and toxins

Olfacation

sense of smell

specific anosmia

inability to smell specific smells

olfactory bulb

a forebrain structure immediately above the nasal cavity

Pheromones

Chemical signals released by an animal that communicate information and affect the behavior of other animals of the same species.

cutaneous senses

The skin senses that register sensations of pressure, warmth, and cold.

skin

multilayered elastic structure that sends messages through the thalamus to a corresponding point in the somatosensory cortex

kinesthesis

provides feedback about other muscles and joints positions and movements

vestibular sense

the sense of body movement and position, including the sense of balance