FINAL STUDY GUIDE (PT) Flashcards
(blank) is an example of a catecholamine neurotransmitter and (blank) is an example of a parasympathetic chemical.
Epinephrine, Acetylcholine
If an animal has lost the ability to swallow, they most likely have lost innervation from which cranial nerve?
IX
Bells Palsy (a loss of the muscles of facial expression) will result from a loss of which cranial nerve’s function?
VII
What are the effects of parasympathetic nervous system stimulation on the heart?
Decreased rate and decreased force of contraction
The two ions that are actively pumped into and out of cells that result in the polarization of the cells
Sodium and Potassium
Cerebrospinal fluid lies within the (blank)
Subarachnoid space
The space between the nerve end and the sarcolemma of the muscle is called (blank)
Synaptic cleft
What substance causes the breakdown of acetylcholine in the synaptic cleft?
Acetylcholinesterase
What is one example of a posterior pituitary hormone?
Oxytocin
The cranial nerves originate from the (blank)
Brainstem
The vagus nerve is which cranial nerve?
X
The cranial nerves are anatomically part of what system?
Peripheral nervous system
An imbalance of what minerals can affect nerve function?
Sodium and Potassium
When a stimulus is string enough to cause complete depolarization it has reached what?
Threshold
Sensory nerves are considered what?
Afferent nerves
Nerve fibers encased in a white sheath of fatty material are termed what?
Myelinated
What are the layers of the meninges?
Dura mater
Pia mater
Arachnoid
Dendrites
Branch like structures that conduct impulses toward the nerve cell body
How many pairs of cranial nerves do dogs have?
12
Outside of the brain and spinal cord, nerve cells bodies are usually found in clumps or aggregations called (blank)
Ganglia
The presence of a myelin sheath on an axon tends to what?
Accelerate all impulses
What cranial nerve carries impulses from the ear to the brain?
Acoustic (VIII)
Which cranial nerve provides parasympathetic innervation to the heart, lungs, stomach, and small intestine?
Vagus (X)
Which cranial nerve conducts motor impulses to the tongue?
Hypoglossal (XII)