- Depolarization
- Hyperpolarization
- Action potential
- No change in potential
Category: Biology etea medical mcqs
- Rapidly opening ion channels.
- Activating intracellular signaling pathways, often involving G-proteins.
- Generating action potentials directly.
- Sensing pressure changes.
- They directly open ion channels.
- They synthesize ATP for receptor activation.
- They act as intermediaries to activate effector enzymes or ion channels.
- They regulate neurotransmitter reuptake.
- Activating second messenger systems.
- Directly opening or closing ion channels upon ligand binding.
- Phosphorylating intracellular proteins.
- Acting as enzymes.
- Olfactory epithelium
- Retina
- Taste buds
- Cochlea
- Sensitization
- Adaptation
- Potentiation
- Facilitation
- Optic nerve (II)
- Trigeminal nerve (V)
- Olfactory nerve (I)
- Facial nerve (VII)
- Muscle spindle
- Baroreceptor (for sustained pressure)
- Pacinian corpuscle (for vibration)
- Merkel cell
- Tonic receptors
- Phasic receptors
- Nociceptors
- Thermoreceptors
- Rapid decrease in firing rate despite continuous stimulus.
- Sustained firing as long as the stimulus is applied.
- Sensitivity only to sudden changes in stimulus.
- Being primarily involved in pain perception.
- Temperature of the skin.
- Chemical composition of blood.
- Body position and movement.
- Light intensity.
- Photoreceptors in the eye
- Thermoreceptors in the skin
- Proprioceptors in muscles
- Nociceptors on the skin surface
- The external environment.
- The internal environment of the body.
- Joint positions.
- Taste buds.
- Hyperpolarization
- Action potentials
- Synaptic transmission
- Decreased sensitivity
- Action potential
- Synaptic potential
- Receptor potential
- Resting potential
- All-or-none events.
- Graded potentials.
- Propagated along the axon.
- Always inhibitory.
- Receptors can respond equally well to all types of stimuli.
- Each receptor type is typically most sensitive to a specific form of energy.
- Specificity refers to the location of the receptor.
- Specificity is only relevant for chemoreceptors.
- Sound waves
- Heat energy
- Light energy
- Chemical signals
- Any stimulus that can excite the receptor.
- The specific type of stimulus energy to which a receptor is most sensitive.
- The minimum intensity of a stimulus required to excite a receptor.
- The maximum response a receptor can generate.
