PT 103 - CNS - Unit 1 Flashcards
Q: Describe the RESPONSIBILITY of the MYELIN SHEATH
A: Wraps around the axon to help with impulse (like insulation).
Q: WHAT nervous system works best while we are at REST?
A: Parasympathetic System
Q: When an adrenergic response action happens, WHAT compounds are responsible for ACTIVATION?:
A: Adrenaline like compounds
Q: WHAT is the central nervous system composed of?
A: 1. Brain
A: 2. Spinal cord
Q: WHAT is a NEURON?
A: The smallest unit of the nervous system; nerves through out body carrying messages back & forth from the CNS.
Q: HOW MANY nerve cells does the adult brain contain?
A: 100 billion
Q: The MEDULLA OBLONGATA controls 3 VITAL CENTERS- WHAT are they?
A: 1. Respiratory
A: 2. Cardiac
A: 3. Vasomotor
Q: Automatic functions are controlled by WHAT nervous system?
A: Autonomic Nervous System
Q: WHAT response is activated by the sympathetic system?
A: The “Fight or Flight” Response
Q: The HYPOTHALAMUS has a built-in thermostat and ________________ center.
A: Appetite Replay Center
11: WHAT is the simulated “Fight or Flight” Response?
A: Stimulated response by the body during stress or crisis.
Q: WHAT is a SYNAPSE?
A: A small gap between the end of one neuron and dendrites.
Q: WHAT are the main neurotransmitters of the sympathetic nervous system?
A: 1. Norepinephrine
B. 2. Epinephrine
Q: The cerebrum, medulla oblongata and cerebellum are ALL parts of the ___________.
A: Brain
Q: WHAT are AFFERENT NEURONS?
A: Sensory neurons that give electrical impulses from the body TOWARDS the CNS.
