NERVOUS SYSTEM Flashcards
WHAT IS NERVOUS SYSTEM
the nervous system is a network of cells which enables the ability for the brain to receive information to coordinate a response.
(receives information from out and inside the body)
THREE MAIN FUNCTIONS OF NS?
- receives information
- process information
- coordinates a response (to informaion)
EXAMPLE OF RECEIVE, PROCESS AND RESPOND?
receive: sensory stimuli from the external world (environment)
process: brain - ‘it is really hot outside’
respond: person takes jumper off - is no longer hot
VAGUS NERVE?
one of your body’s longest nerves extending from brain to gut.
IMPACTS OF POOR GUT MICROBIOME?
obesity, cancer and heart disease
THE MICROBIOME?
a group of living organisms found as part of your microbiota good bacteria that we want from your body
GUT MICROBIOTA?
- probiotics are good for gut microbiota
- prebiotics are food for probiotics
- antibiotics kill bacteria
THE GUT-BRAIN AXIS?
The gut is often referred to as a 2nd brain.
ENTERIC NERVOUS SYSTEM?
- branch of autonomic ns
- the ENS controls the activity of the gastrointestinal tract or gut
- located stomach
CENTRAL NERVOUS SYSTEM? aaa
- process information received through sensory systems and other parts of the body to activate appropriate actions
-located in middle of the body - consist of brain and spinal cord
WHAT ARE THE 2 STRUCTURES OF THE CNS?
spinal cord
brain: network of cells that processes info received from nerves
NAME 1 MAJOR FUNCTION FOR SPINAL CORD?
- receives sensory info from body and sends it to the brain for processing
PERIPHERAL NERVOUS SYSTEM?
entire network of nerves located outside the CNS that transmits information to and from CNS
TWO DIVISIONS OF PERIPHERAL NS?
SOMATIC NS: VOLUNTARY MOVEMENT
AUTONOMIC NS: INVOLUNTARY/AUTOMATIC FUNCTIONS
AUTONOMIC NS DIVISIONS:
sympathetic ns: flight or fight response, increase HR, dilated eyes, sweating and hotness
parasympathetic ns: relaxing state, normal HR, eyes constrict, cooler
(returns body back to homeostasis).