RAT #4 Flashcards
What type of signals does the sympathetic division create
Activities related to response intended to minimize or counter threats to homeostasis
The autonomic nervous system
Governs activities of the urinary bladder, the eye, and muscles involved in accomplishing the act of swallowing
The autonomic nervous system is involved in….
Pupil dilation or constriction
Fight or flight
Urination
Swallowing
What type of drug would decrease heart rate?
- Muscarinic agonist
- Beta agonist
- Muscarinic antagonist
- Nicotinic antagonist
Muscarinic agonist
- Decreased HR is associated with nerve impulses delivered via the release of acetylcholine…Acetylcholine receptors are the muscarinic type
During strenuous exercise which systems are likely to be more active
Sympathetic nervous system and somatic nervous system
Similarities between autonomic neuroeffector synapses and the neuromuscular junction include
The presence of enzymes such as acetylcholinesterase or monoamine oxidase and the requirement for calcium to produce transmitter release
The sympathetic nervous system can exert effects on specific target organs via the
Collateral ganglia
Activation of _____ adrenergic receptors raises the concentration of cAMP in effector cells
Beta 1 and beta 2
T/F Some blood vessels contain alpha adrenergic receptors that cause vasoconstriction in the presence of epinephrine, whereas others have beta 2 adrenergic receptors that cause vasodilation in the presence of epinephrine
True
Where is acetylcholine released by in the autonomic nervous system
All preganglionic sympathetic neurons, all preganglionic parasympathetic neurons, and all postganglionic parasympathetic neurons
Muscarinic receptors are located on ______.
Parasympathetic target organs
Drugs to treat asthma attacks might include
Alpha agonists and beta agonists
CNS areas that are involved in the control of autonomic functions include the ____
Spinal cord, hypothalamus, and pons
What organs are controlled by both the sympathetic and parasympathetic branches of the autonomic nervous system?
Lungs, urinary bladder, heart, pancrease
Which of the following is likely to occur when someone stands up quickly?
Increased release of norepinephrine and increased activity at adrenergic receptors
Sympathetic preganglionic neurons emerge from the __________ portion of the spinal cord.
Lumbar and thoracic
In the autonomic nervous system, acetylcholine is released by __________.
all preganglionic sympathetic neurons, all preganglionic parasympathetic neurons, and all postganglionic parasympathetic neurons
Which of the following cell types or structures can be found in both the sympathetic and the parasympathetic nervous system?
Preganglionic neurons and chain ganglia
The autonomic nervous system innervates __________.
cardiac muscle, blood vessels, and adipose tissue
Synapses between postganglionic neurons and effector organs are different from other synapses in that __________.
there are no distinct postsynaptic sites on the effector organs and transmitter is released from several areas on the postganglionic axon
The major neurotransmitters/neurohormones of the autonomic nervous system are __________.
Acetylcholine, epinephrine, and noreponephrine
The autonomic nervous system innervates __________.
cardiac muscle, blood vessels, and adipose tissue
Which of the following cell types or structures can be found in both the sympathetic and the parasympathetic nervous system?
Preganglionic neurons and chain ganglia
Afferent Neurons
Neurons that bring information into the central nervous system