Nervous system part 4 Flashcards
There is a pair of spinal nerves at the level of each vertebrae for a total of __ pairs
31
are formed by the combination of the ventral and dorsal roots of the spinal cord. They are named for the region from which they arise
Spinal nerves
Spinal nerves are formed by the combination of the _______ ___ _________ _____of the spinal cord.
ventral and dorsal roots
divide soon after leaving the spinal cord
Spinal nerves
The spinal nerves that serve the skin and muscles of the posterior trunk
Dorsal rami
The spinal nerves that forms a complex of networks (plexus) for the anterior
Ventral rami
The involuntary branch of the nervous system which Consists of only motor nerves
Autonomic Nervous System
The Autonomic Nervous System is Divided into two divisions
Sympathetic division
Parasympathetic division
In this nervous system, they have one motor neuron in the nerves that release ACC
Somatic NS
In this nervous system, they have the preganglionic and postganglionic nerves
Autonomic NS
In this nervous system, the effector organs used are the skeletal muscle
Somatic NS
In this nervous system, the effector organs are the smooth muscle, cardiac muscle,and glands
Autonomic NS
In this nervous system, they always used the neurotransmitter acetylcholine
Somatic NS
In this nervous system, the neurotransmitters used are acetylcholine, epinephrine, or norepinephrine
Autonomic NS
a neurotransmitter that plays a role in memory, learning, attention, arousal and involuntary muscle movement
acetylcholine
Also known as adrenaline, plays an important role in your body’s fight-or-flight response.
Epinephrine
also known as noradrenaline.
substance that is released predominantly from the ends of sympathetic nerve fibres and that acts to increase the force of skeletal muscle contraction and the rate and force of contraction of the heart.
norepinephrine
the Sympathetic Division
originates from __ through __
T1, L2
are at the sympathetic trunk (near the spinal cord)
Ganglia
Short pre-ganglionic neuron and long postganglionic neuron transmit impulse from
CNS to the effector
Norepinephrine and epinephrine are neurotransmitters to the
effector organs
Parasympathetic Division
Originates from the _____ ____ and __ through __
Brain Stem, S1, S4
Are the effector organs in the parasympathetic division
Terminal ganglia
In the parasympathetic division, it Always use _______________ as a neurotransmitter
Acetylcholine
The “fight-or-flight” response. it Response to unusual stimulus and Takes over to increase activities
Sympathetic NS
Remember as the “E” division, the sympathetic NS, =
exercise, excitement, emergency, and embarrassment
housekeeping activites. It Conserves energy and Maintains daily necessary body functions
Parasympathetic
Remember as the “D” division, Parasympathetic -
digestion, defecation, and diuresis
The nervous system is formed during the _____ ______ of embryonic development
first month
The ___________is one of the last areas of the brain to develop
hypothalamus
No more neurons are formed after _____, but growth and maturation continues for several years
birth
The brain reaches maximum weight as a _____ _____
young adult
This division Increases heart rate
Sympathetic
This division decrease heart rate and is at rest or relaxed
Parasympathetic
