Science Test 1 - Nervous System Flashcards
What is second function of the nervous system?
Coordinates response to changes
What is the term given to describe the whole process from sensory to interneuron to motor neuron?
A reflex arc
What is the gap between neurons called?
Synapses or synapse
What is a Relay Neuron?
Creates neural circuits that enable communication between sensory and motor neurons and the central nervous system
What is a nervous system tissue?
Nervous Tissue
What is a nervous system cell?
Neuron
What is a sensory neuron?
Carries messages from receptor cells in sense organs
What is stimuli or stimulus
Changes
What happens in reflexes?
The message travels to the spinal cord then gets turned around by an interneuron. This neuron sends the signal straight back out to the motor neuron, making the muscle move.
What is third function of the nervous system?
Transmits messages in form of electrical signals
What are the two categories of the PNS (Peripheral nervous system)
Somatic and Autonomic
What are effectors?
Muscles or glands that translate the messages into action
What is a nervous system organ?
Brain, spinal cord, nerves and sensory organ
What is first function of the nervous system?
Detects changes that impact the body
What is a motor neuron?
Carries messages from brain and spinal cord to effectors