Neuro System Flashcards
What is the nervous system?
The body’s ability to sense and respond to an environment
What is autonomic and somatic nervous system
They are both under the branch of PNS (peripheral nervous system)
Autonomic: doing things without even thinking about it. For example breathing. This is part of a system called parasympathetic.
Somatic: consciously aware of doing an action and having the conscious thought. This is part of the sympathetic system.
What is the CNS (central nervous system) made of?
Brain
Spinal cord
What is the PNS (peripheral nervous system) made of?
Nerves throughout the whole body
What is a neuron?
The structure of the nervous system. A group of neuron cells creates a nerve.
Define afferent neurons
Neurons carry things to a central points (CNS) also called sensory neurons in the PNS
Define efferent neurons
Neurons carry things away from the central point. Called motor neurons in CNS
What is a reflex look
Stimulus is effected- sensory nerves go to the spinal cord instead of brain for a faster decision (skips the brain for urgency) motor neuron’s carry it to the central point often the muscle.
What are the 7 parts of a neurons anatomy
- Dendrite: receiving end of neuron (receives info from other neurons)
- Axon terminal: other end of the neuron (not connected to the cell body)
- Axon: the pathway down the neuron
- Myelin sheath: fatty substance that is a insulator for the axon
- Nodes of Rangier: nodes in between the myelin sheath in the axon allowing for info to pass down along the pathway
- Cell body: cell organelles
- Nucleus: stores cells (genetics, DnA, etc)
What is action potential?
Action potential is the neurons cells constant state of -70 Mila volts (almost an electrical charge) and it changes when your body has a reaction to an environment or desire to perform an action. It will use homeostasis and the sodium potassium pump to get back to resting before repeating.
What are the functions of a frontal lobe?
It helps with judgment, planning, problem solving and reasoning.
What are the functions of the Parietal lobe?
Physical senses like temperature pain pressure and touch
What are the functions Temporal lobe?
Memory, understanding languages, and hearing.
What are the functions of the Occipital Lobe
Vision and visual perception
What are the functions of the cerebellum and brain stem?
Coordination
Voluntary motor movement
Balance
