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Nervous System
12. 1 Intro to nervous system
Question | Answer |
---|---|
What is the nervous system composed of? | Brian, spinal cord, and ganglia |
What does the nervous system serve as? | The bodies primary communication and control system |
What does the nervous system do? | Collect information, process and evaluate info, and initiate response to info |
What are receptors? | specialized nervous system structures that monitor changes in internal and external environment. |
What are the nervous systems two anatomic divisions? | Central nervous system (CNS) and peripheral nervous system(PSN) |
What does the central nervous system include? | Brain and spinal cord |
What does the peripheral nervous system include? | Bundles of neuron process (axon) and the ganglia nerves |
What are the nervous systems two functional divisions? | Sensory nervous system and motor nervous system |
What is the sensory nervous system responsible for? | receiving sensory information from receptors that detect stimuli and transmitting this info to CNS |
What are the two subdivisions of the sensory nervous system? | Somatic sensory and visceral sensory |
What is the somatic sensory? | Detects stimuli that can consciously perceive. Example- The five senses |
What is the visceral sensory? | Detects stimuli that we do not consciously perceive. Example- Blood vessels and internal organs |
What is the motor nervous system responsible for? | Initiating and transmitting motor output from the CNS to effectors |
What are the two subdivisions of the motor nervous system? | Somatic motor and autonomic motor |
What is somatic motor? | initiates and transmits motor output from CNS to skeletal muscles. Example - exert voluntary control over your leg muscles when pressing gas pedal |
What is autonomic motor? | innervates and regulates cardiac muscle, smooth muscle, and glands without conscious control. Example - Heart beating |