10 Sensory (Lecture) Flashcards
3 types if maechanoreceptors
Baroreceptors-blood vessels monitors BP Tactile- touch Proprioceptors- stretch receptors at a joint
Mechanoreceptors
Respond to physical force applied to the body
Thermoreceptors
Respond to temperature changes
Chemoreceptors
Respond to specific chemicals
2 types of chemoreceptors
Osmoreceptors -particle concentration in the blood Nociceptors- pain damage to body can cause ATP to leak into blood stream causing pain
Photoreceptors
Respond to light
Gustation
Taste
Lingual papillae
Peg like structures on surface of tongue 4 types
Circumvallate papillae
Largest of the 4. Posterior of tongue. 7-12 total. Contain many taste buds.
Fungiform papillae
Intermediate sized. Most numerous with a taste bud. Can be seen with eye.
Foliate papillae
Lateral and posterior in the tongue. Contains taste buds
Filiform papillae
Smallest of the 4 and most numerous. DO NOT contain taste bud.
Tastants
Any chemical that a taste bud can detect. Must dissolve in saliva or it will not be tasted.
4 primary taste sensations
Sweet sour salty bitter
Olfactory receptors are located
In the roof of the nasal cavity. Holes in the cribriform plate are smell foramen
Olfactory gland
Makes mucus
Vomer nasal organ VNO
Just post to nose maybe free one receptor
Oderants
A chemical that stimulates an olfactory receptor. Must dissolve in mucus or it cannot be smelled.
Adaptation (smell)
Smell receptors adapt very quickly. You can only smell new smells.
What type of receptors replace them selves
Taste and smell
Auricle (pinna)
Flap of tissue with grooves and ridges that directs sound toward the ear canal.
Ceruminous glands
Produce ear wax (outer ear)
Tympanum
Ear drum converts sound pressure waves into mechanical motion (vibration).
Auditory ossicles
Transmit vibration to the choclea
What are the 3 occicles
Malleous, incus, stapes