UMHB A&P I Lab Petty Lab #11

Thermoreceptors

respond to changes in temperature

Mechanoreceptors

Sensory receptors responsible for sensing distortion in body tissues.

Proprioceptors

monitor the position and movement of skeletal muscles and joints

Nociceptors

pain receptors

Chemoreceptors

respond to chemicals

Photoreceptors

respond to light

Pacinian corpuscles

Mechanoreceptor

Meissner's corpuscles

Mechanoreceptor

free nerve endings

mechanoreceptors, nociceptors, thermoreceptors

olfactory epithelium

cribiform plate of ethmoid bone

H

Olfactory nerve fibers

What structure passes through the cribriform plate?

olfactory cilia

hairlike structures located in upper portion of nasal passages, receptors for smell

nonmotile

olfactory receptor cell

A type of neuron, found in the olfactory epithelium, which senses airborne odorants via specialized receptor proteins.

Bipolar neuron

olfactory supporting cells

N

Columnar cells that surround and support the olfactory sensory neurons

cicumvallate papillae

1

contain 100 taste buds each

gustatory cell

filiform papillae

Provide friction

Do not contain taste buds

taste hairs

fungiform papillae

contain 5 taste buds each

fungiform papillae

contain 5 taste buds each

taste pore

taste buds

taste bud

taste buds

facial, glossopharyngeal, vagus

Three cranial nerves involved in gustation

Facial nerve

anterior 2/3 of tongue

Glossopharyngeal nerve

posterior 1/3 of tongue

Vagus nerve

epiglottis

sweet, salty, bitter, sour, umami

5 basic tastes

sweet receptors

sugars, saccharine, some amino acids

sour receptors

respond to H+ ions or acids

salty receptors

respond to metal ions

bitter receptors

respond to alkaloids

umami receptors

respond to the amino acid glutamate and aspartate or the beefy taste of meat