Week 5 key terms Flashcards
What is somatosensation?
The sensors in the body
what are the sensors in the body? (5)
Temperature Pain Hapsis Kinesthesis Proprioception
What is thermoregulation?
The active process of regulating the body temperature around a set value
What is discriminate touch?
Stimuli from skin and body tissue
How does discriminate touch work?
Facilitated by specialised touch receptors with different structures
What is kinesthesis?
a sensor
The sensation of muscle, joint and tendon movement
What is the vestibular system?
Made up of receptors in the inner ear that respond to movement and position
What is proprioception?
Body sensor
Information about body movement and position that is sent to the brain
What is hapsis?
Receptors that detect the sensation of vibration and pressure
What is the Pacinian Corpuscle?
The specific capsule that detects deeper pressure and vibration
What is Ruffini’s Corpuscle?
Capsule sensitive to Stretching/sustained deep tissue
Where is Ruffini’s Corpuscle found? (4)
Found deep within the epidermis and subcutaneous tissue
In both glabrous and hairy skin
What is Meissner’s Corpuscle?
Rapidly adapting encapsulated receptors sensitive to change in shape and texture
where is Meissner’s corpuscle found?
Found in dermis in both glabrous skin
What is endolymph?
fluid found in the semicircular canals that brush the hair when experiencing movement and speed
What are Otolith? (2)
a main organ in the vestibular system
Provides messages about our 3D space sensitive to speed and direction
What is the semicircular canals?
A main organ in the vestibular system
3 canals filled with endolymph and hair cells
What is nocieption?
Receptors sensitive to pain and temperature
What does encapsulated mean?
Surrounded by capsules
What does unencapsulated mean?
surrounded by nerve endings
What are free nerve endings?
Dendrites that aren’t attached to anything become attached to sensory neurons
What is two-point discrimination?
The ability to know that 2 points touching the skin are 2 distinct objects touching the skin rather than just 1
What is homunuculus?
the sensory map
What is the spinothalamic surgery?
Nociceptive and crude touch information ascends contralaterally
What is the dorsal column pathway?
Where touch information ascends the spinal cord this way
What is the epidermis?
Top layer of the skin that produces cells that pigment the skin and protect the immune system
what is the dermis?
Layer of the skin that contains much of the nerve endings, oil, sweat glands and hair follicles
What is glabrous skin?
Hairless skin
