Ion Channels Flashcards
What is the difference between the afferent and the efferent path?
Afferent path is sensory receptor to brain while efferent path is from brain to effector.
Describe the full sequence of the afferent path.
Internal/External Environment, Sensory Components, Central Nervous System
Describe the full sequence of the efferent path.
Central Nervous System, Motor Components, Effectors
What are examples of sensory components?
Sensory ganglia and nerves, sensory receptors
List some parts of the central nervous system.
Cerebral hemispheres, diencephalon, cerebellum, spinal cord, brainstem
What are some examples of motor components in the visceral motor system?
Autonomic ganglia and nerves
What are some examples of motor components in the somatic motor system?
Motor nerves.
What are some examples of visceral motor system effectors?
Smooth muscles, cardiac muscles and glands
What are some example of somatic motor system effectors?
Skeletal muscles.
What is the benefit of the lipid bilayer?
Prevents water soluble molecules from entering without shutting out useful molecules and small polar compounds. Also ensures that the only way ions can enter the membrane is through ion channels.
What are ion channels?
Proteins that span the cell membrane
What are the three distinguishing properties of ion channels?
Selectivity (recognizing ions), reactivity (opens/closes in response to specific signals) and speed
