Class 3 Deck 2 Flashcards
Where are muscarinic cells found?
Effector organs of the parasympathetic nervous system
Muscarinic receptors are coupled to _______ and may either be ________ or _________.
- G proteins
- Inhibitory
- Excitatory
What are the effector organs of the muscarinic receptors?
- Heart
- Smooth muscle of pupil and digestive tract
The adrenergic receptor is broken down to what 2 classes? and they are broken down again into what?
- Alpha (Alpha 1&2)
- Beta (Beta 1,2,3)
Adrenergic receptors (Alpha and Beta) are coupled to what?
-G proteins
What adrenergic receptors tend to be excitatory?
- Alpha 1
- Beta 1 and 3
Which adrenergic receptor tends to inhibitory and why?
- Beta 2
- A greater affinity for epinepherine
The sympathetic and parasympathetic divisions of the autonomic nervous system often work in _______ in order to maintain __________
- Opposition
- Homeostasis
Most changes in the organ activity are controlled by _______ reflexes
Visceral
The _________ exerts an overriding influence on autonomic functions
Hypothalamus
What initiates the the flight or flight response by activation the sympathetic nervous system?
-Hypothalamus
Visceral sensory neurons monitor what?
- Temp
- Pain
- Irritation
- Chemical changes
- Stretch
Visceral sensory neurons are ______ scattered.
Widely
Visceral sensory fibers run with ________ nerves. Espically ______ and ________.
Autonomic
-Vagus and sympathetic
What nerves carry pain fibers from visceral organs?
Sympathetic
