Chapter Two Flashcards
What is a refractory period?
The recovery period in between resting and action potential.
What are the 2 refractory periods?
Absolute and relative.
What is the absolute refractory period?
Membrane is not excitable.
What is the relative refractory period?
Immediately following the absolute refractory period.
What is the sympathetic nervous system?
Controls activation or arousal function. (fight/flight/freeze)
Ex: Your heart pounding when you see a wild bear.
What is the parasympathetic nervous system?
Controls when the emergency is over, slows down the body and causes the opposite of sympathetic changes.
Ex: You feel very tired after slowly backing away and reaching safety from a wild bear.
What is the reticular formation?
Reticular Activating System (RAS). A part of the Hindbrain.
What function does the reticular formation preform?
Plays role in arousal and attention.
What is the hippocampus?
What system is it a part of?
What disease is associated with it?
The “seahorse”, in the forebrain.
Limbic System.
Alzheimers
What is the thalamus?
The “switchboard”, in the forebrain. Sensory relay center/station or a switchboard.
What function does the hippocampus preform?
Involved in forming and retrieving (mostly new) memories.
What function does the thalamus preform?
Relays pain signals from spinal cord.
Where is the somatosensory cortex?
The parietal lobe.
Where is the motor cortex?
The frontal lobe.
What does the left hemisphere of the brain control?
Language, verbal abilities, speech, mathematical and logical abilities.
