EDUCATION PERFECT Keeping Internal Balance - The Autonomic System Module 5 PT 1 Flashcards
Define autonomic functions
Body function that is not normally under conscious or voluntary control.
Define dysautonomias
dysfunctions of the autonomic nervous system
What are the systems that allow the brain to control who we are
- Skeletal Muscles
- Visceral (internal) muscle and tissues
- Hormonal Tissue and glands
How does the Somatic Nervous System help us
Through skeletal muscles.
Where nerves run to a specific muscle or muscle group. This allows for precise, point-to-point (i.e., brain output very precisely controls specific muscle targets), and fast control of skeletal muscles of our limbs and joints
How does the Autonomic Nervous System help us
Through visceral (internal) muscle and tissues.
Where nerves run (generally) to a number of target tissues or organs. This allows for diffuse (i.e., brain output now runs to control many structures simultaneously), integrative (i.e., brain output now coordinates activity across many structures), and medium to long-term control of tissues, glands and smooth muscles
How does the Endocrine System help us
Through hormonal tissues and glands.
Where nerves don’t run to the target tissues or organs. Instead, they either release hormones or control the release of hormones into the blood. These hormones are then transported to affect target tissues and organs (the ones which have receptors for these hormones). This is still for either tissue-specific or diffuse, integrative, and long-term control of tissues, glands and organs.
Of the three systems which two systems control autonomic function?
Autonomic Nervous System and Endocrine System
How do ANS and Endocrine systems achieve homeostasis and allow activity differently?
the ANS is the pathway used to produce direct and relatively rapid neural control of internal organs, in contrast to the slower and longer-term control obtained by using hormones.
What does ANS do
The ANS mediates relatively rapid responses using direct nerve control of peripheral structures.
ANS responses are specific/general to a target tissue but widespread/concentrated across the body.
Specific
Widespread
Can the ANS be supplemented by the actions of hormones? What does this result in?
The actions of the ANS can also be supplemented by the action of hormones which PRODUCE typically SLOW AND DIFFUSE EFFECTS and multiple tissues and organs might be affected.
What are the features of the ANS in the regulation of the internal state for activity and homeostasis?
- Pervasive neural network
- Effects can occur routinely and automatically without volitional control
- Effects are initiated in anticipation of a perturbation
- linked to and coordinated with the somatic NS
What does Pervasive mean?
widespread in where it acts
Define volitional
conscious
Define Perturbation
Distrubance
Give an example of how ANS is linked to and coordinated with the somatic NS
During exercise heart rate and respiratory rate increase, blood supply is diverted from the gut and from the bladder to the exercising muscle and so on - coordinating ANS control of internal organs with Somatic NS control of the exercising and other body muscles and limbs.
