UNIT 3 - KA1 Flashcards
Describe the general functions of the nervous system
The nervous system analyses information from the body and the external environment, stores some aspects and makes decisions regarding appropriate responses and behaviours
How does the nervous system make motor responses
It makes motor responses by initiating muscular contractions or glandular secretions
What is the structure of the central nervous system (CNS)
The CNS consists of the brain and the spinal cord
What does the peripheral nervous system connect
The peripheral nervous system connects the internal or external stimuli with the central nervous system allowing the body to respond
What does the peripheral nervous system consist of
The PNS consists of the somatic nervous system (SNS) and the autonomic nervous system (ANS)
What is the voluntary PNS and what does it control
The somatic nervous system is voluntary and controls skeletal muscles
What is the involuntary PNS and what does it control
The autonomic nervous system is involuntary and controls smooth muscle
Which neurons does the somatic nervous system contain
The somatic nervous system contains sensory and motor neurons
Function of sensory neurons
Sensory neurons take impulses from sense organs to the CNS
Function of motor neurons
Motor neurons take impulses from the CNS to muscles and glands
What does the autonomic nervous system consist of
The autonomic nervous system consists of the sympathetic and parasympathetic systems
Which type of systems are the sympathetic and parasympathetic systems
The sympathetic and parasympathetic nervous system are antagonistic. This means that they affect many of the same body structures exerting equal but opposite effects on them
What two main systems regulate the autonomic nervous system
There are two main system that regulate the autonomic nervous system, the sympathetic nervous system (fight or flight) and the parasympathetic nervous system (rest and digest)
What type of actions affect heart and breathing rate, peristalsis and intestinal secretions
The antagonistic actions of the sympathetic and parasympathetic systems
What is the effect of the sympathetic nervous system on the body
The sympathetic system speeds up heart rate and breathing rate while slowing down peristalsis and production of intestinal secretions. (Prepares body for action)
