Neuroscience Part 3 Flashcards
Molecule that inhibits and is similar enough in structure to the neurotransmitter to occupy the receptor site and block its action
Antagonist
Speedy Electrochemical communication system consisting all of the nerve cells in the peripheral and central NS
Nervous System
Brain and Spinal Cord
Central Nervous System
Located in the center of the body
Central Nervous System
Type of NS that connects the CNS to the body’s sense receptors, muscles, and glands
Peripheral Nervous System
Found in the periphery of the body
Peripheral Nervous System
Bundles of neural axons that connect CNS with muscles, glands, and sense organs
Nerves
Type of neurons that carry information from sense receptors to the CNS for processing
Sensory/Afferent Neurons
Neurons of the CNS that link sensory and motor neurons
Interneurons
Carry information and instructions for action from the CNS to muscles and glands
Motor/Efferent Neurons
Division of the peripheral NS that controls the glands voluntary movements of the skeletal muscles
Somatic NS
Division of the PNS that controls the glands and muscles of internal organs & controls internal functioning
Autonomic NS
Regulates automatic behaviors necessary for survival
Autonomic NS
Division of autonomic NS that arouses the body and mobilizes energy for stressful situations
Sympathetic NS
Pupils dilate, heartbeat accelerates, digestion is inhibited, glucose is released by liver, adrenal glands secrete epinephrine all symptoms of what?
Sympathetic NS
Leads to the division of the autonomic NS that calms the body and conserves energy
Parasympathetic NS
Pupils contract, heartbeat slows, diagestion resumes
Parasympathetic NS
Simple, automatic, inborn response to sensory stimulus governed by a very simple neural patherway
Reflex
Occurs when a signal is sent from a sensory organ to the spinal cord
Reflex Arc
Processes the information instead of passing it on to the brain
Reflex Arc
NS leads to what two other NS
- Peripheral
- Central
PNS leads to what two controls?
- Autonomic
- Somatic
Autonomic Control leads to what two type of reactions?
- Sympathetic
- Parasympathetic
Fight or Flight, Arousing
Sympathetic
Rest & Digest, Calming
Parasympathetic
