Lab: General and Special senses Flashcards
What are the 3 criteria to describe receptors?
- Stimulus origin
- Exteroceptors
- Interoceptors
- Proprioceptors - Receptor distribution
- Somatic receptors
- Visceral receptors
- Special senses - Modality of stimulus
- Chemorecptors
- Thermoreceptors
- Photoreceptors
- Mechanoreceptors
- Baroreceptors
- Nociceptors
Which receptive field is more sensitive?
Receptive field 1
- bigger field = less sensitive
What are the 3 unencapsulated receptors?
- free nerve ending
- root hair plexus
- tactile discs
What are the 4 encapsulated receptors?
- krause bulb
- lamellated corpuscle
- ruffini corpuscle
- tactile corpuscle
Name the type, location, and function of the receptor.
Free nerve ending
Type: Unencapsulated
Location: deep dermis, papillary layer of the dermis
Function: detect pressure, change in temperature, pain, touch
Name the type, location, and function of the receptor.
Root hair plexus
Type: unencapsulated
Location: surrounds hair follicles in the reticular layer of the dermis
Function: detect movement of the hair
Name the type, location, and function of the receptor.
Tactile disc
Type: unencapsulated
Location: stratum basalt of epidermis
Function: detect light touch, textures, and shapes
Name the type, location, and function of the receptor.
Krause bulb
Type: encapsulated
Location: mucous membrane of oral cavity, nasal cavity, vagina, and anal cavity
Function: detect light pressure and low-frequency vibration
Name the type, location, and function of the receptor.
Lamellated Corpuscle
Type: encapsulated
Location: dermis, subcutaneous tissue, synovial membrane, and some viscera
Function: detect deep pressure and high frequency vibration
Name the type, location, and function of the receptor.
Ruffini corpuscle
Type: encapsulated
Location: dermis and subcutaneous layer
Function: detect continuous deep pressure and skin distortion
Name the type, location, and function of the receptor.
Tactile corpuscle
Type: encapsulated
Location: dermal papillae, especially in lips, palms, eyelids, nipples, genitals
Function: detect fine, light touch and texture
What are the 5 general senses?
- Temperature
- Pain
- Touch
- Stretch
- Pressure
What are the 5 special senses?
- Gustation - taste
- Olfaction - smell
- Vision
- Equilibrium
- Audition - hearing
What are the 5 basic taste sensations?
- Sweet
- Salt
- Sour
- Bitter
- Umami
Describe the taste pathway to the CNS.
Primary neuron:
1. Anterior 2/3 (CN VII) and Posterior 1/3 (CN IX)
Secondary neuron:
2. Medulla/Pons
Tertiary neuron:
3. Thalamus
4. Primary gustatory cortex
Identify the layers of the retina neural layer.
- Photoreceptors
- Bipolar
- Ganglion
Identify the structures of the eye.
Describe the visual pathway.
- Optic nerves
- Optic chiasm
- Optic tract
- Superior colliculi
- Thalamus
- Visual cortex
Identify the structures of the cows eye.
Identify the structures of the cows eye.
Identify the structures of the inner eye, middle ear, and external ear.
