Sensory Pathways Flashcards
1
Q
What are the 4 primary stimuli?
A
- chemical (taste, smell)
- mechanical (pressure)
- thermal (temperature change)
- electromagnetic (light)
2
Q
What is transduction?
A
External stimulus (received by receptor) is converted into electrical or chemical signal
3
Q
What is a receptive field?
A
A region of sensory space that elicits a response in a sensory receptor or neurone
4
Q
What is the homunculus?
A
representation of the sensations of the human body in the brain (receptive field)
5
Q
What are the types of receptors?
A
- Mechanoreceptors (Proprioceptors)
- Baroreceptors (BP)
- Chemoreceptors
- Nociceptors (pain)
- Thermoreceptors
6
Q
What is the visceral sensory pathway?
A
Sensory receptors in organs
↓ Cranial and spinal nerves
Medulla oblongata
↓
Other autonomic centres
