Practical #2
each sympathetic chain typically has how many cervical sympathetic ganglia?
3
a normal patellar reflex indicates that the spinal nerves and spinal segments _____ are undamaged
L2-L4
The neurotransmitter at all synapses and neuroeffector junctions in the parasympathetic division of the ANS is ______________
acetylcholine
the structure that connects the third ventricle with the fourth ventricle is the _____
aqueduct of the midbrain
the structure that allows the 2 hemispheres of the brain to communicate is called the _____
corpus callosum
Motor fibers travel in the ________ of the spinal cord.
descending tracts
dual innervention is most prominent in the
digestive tract, heart and lungs
which of the following is defined as the tough, fibrous sheath that form the outermost layer of a peripheral nerve
epineurium
the digestive, urinary and reproductive organs of the pelvic cavity are innervated by which plexus?
hypogastric plexus
Neurotransmitters norepinephrine and epinephrine function as hormones, and are secreted by which structure
hypothalamus
A neuron might be temporarily unable to transmit an impulse to another neuron or effector if ________.
its supply of neurotransmitters in exhausted
during sympathetic stimulation, mobilization of energy reserves occurs through the accelerated breakdown of glycogen in
muscle and liver cells
most sympathetic postganglionic fibers release which neurotransmitter at neuroeffector junctions?
norepinephrine
The blood vessels that supply the spinal cord are found in the _________
pia mater
Crainial nerves 3, 4, 5-Branch 1 and 6 all exit the cranium through the _______
superior orbital fissure
in some sever cases of stomach ulcers, the patient has surgery to cut the branches of the vagus nerve that innervates the stomach. How would this help the problem?
this decreases autonomic nervous stimulation of digestive glands and therefore decreases their secretion
the enteric nervous system of the ANS has neurons located in
wall of the digestive tract
