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Chapter 8-The Nervous System
Nervous System
49
Anatomy
3rd Grade
11/19/2012

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Term
What are the divisions of the nervous system?
Definition
central and peripheral
Term
What are the components of the central nervous system?
Definition
brain and spinal cord
Term
What are the components of the peripheral nervous system?
Definition
cranial and spinal nerves
Term
What are the divisions of the peripheral nervous system?
Definition
Afferent(sensory), Efferent(Motor)
Term
What is the somatic nervous system?
Definition
things under conscious control
Term
What is the autonomic nervous system?
Definition
involuntary
Term
What are the two divisions of the autonomic nervous system?
Definition
Sympathetic and parasympathetic
Term
What is the sympathetic nervous system?
Definition
fight or flight
Term
What is the parasympathetic nervous system?
Definition
rest and digest
Term
What are the two branches of the Efferent(motor) system?
Definition
Somatic, Autonomic
Term
What are some things that happen when your sympathetic(fight or flight) nervous system is activated?
Definition
1.dilated bronchioles
2.fast heartbeat
3.you secrete adrenaline
4.Decrease secretion(aka digestive systems lows down)
5.Decrease motility
6.Retain colon contents
7.Delay emptying
Term
What are some things that happen when the parasympathetic nervous system is activated?
Definition
1.Constrict broncioles
2.Slow down heartbeat
3.increase secretion
4.increase motility
5.empty colon
6.empty bladder
Term
What is the tissue of the nervous system?
Definition
the neuron
Term
What are the 12 cranial nerves? (*=afferent, $=efferent)
Definition
I.Olfactory*
II.Optic*
III.Oculomotor$
IV.Trochlear$
V.Trigeminal*$
VI.Abducens$
VII.Facial *$
VIII.Vestobulocochlear *
IX.Glossopharyngeal *$
X.Vagus *$
XI.Accessory $
XII.Hypoglossal $
Term
Where is the cranial I (olfactory) nerve?
Definition
Afferent, nasal mucosa
Term
Where is the cranial II (Optic) nerve?
Definition
afferent, retina of the eye
Term
Where is the cranial III (Oculomotor) nerve?
Definition
efferent, eye muscles
Term
Where is the cranial nerve IV(trochlear)?
Definition
efferent-eye muscles
Term
Trigiminal (V)
Definition
Efferent-muscles of mastication and other cranial muscles
Afferent-face and head skin, teeth, oral cavity, parotid gland, tongue(general sensation)
Term
Abducent(VI)
Definition
Efferent-eye muscles
Term
Facial nerve(VII)
Definition
Efferent-muscles of facial expression, lacrimal, submandibular, sublingual glands
Afferent-skin around ear and tongue(taste sensation)
Term
Vestibulocochlear nerve (VIII)
Definition
Afferent, inner ear
Term
Glossopharyngeal(IX)
Definition
Efferent- stylopharyngeus muscle and parotid gland(parasympathetic)
Afferent-skin around ear and tongue(generalized taste and sensation)
Term
Vagus nerve(X)
Definition
Efferent-Muscles of soft palate, pharynx, larynx, organs of abdominal cavity(parasympathetic)
Afferent-Skin around ear and epiglottis(taste sensation)
Term
Accessory nerve(XI)
Definition
Efferent, muscles of the neck, soft palate, and pharynx
Term
Hypoglossal Nerve (XII)
Definition
Efferent-tongue muscles
Term
What are the branches of the trigiminal nerve? (V)
Definition
1.Ophthalmic Branch
2.Maxillary branch
3.Mandibular Branch
Term
Which nerve goes to the posterior teeth?
Definition
the posterior superior alveolar nerve of the maxillary branch of the trigiminal nerve, EXCEPT the mesial buccal root of the first molar
Term
Which root goes to the mesial buccal root of the first molar and the premolars?
Definition
middle superior alveolar nerve of the maxillary branch of the trigiminal nerve
Term
Which nerve goes to the anterior teeth of the maxilla?
Definition
the anterior superior nerve of the maxillary branch of the trigiminal nerve
Term
Where does the nasopalatine nerve emerge from? What does it serve?
Definition
emerges from the incisive foramen, gingivia of the hard palate
Term
What are the two types of roots seen in the mandibular branch of the trigiminal nerve?
Definition
motor and sensory
Term
What is the one secretory nerve of the mandibular banch?
Definition
the buccal nerve
Term
Where does the inferior alveolar nerve enter? What does it branch in to?
Definition
enters mandibular foramen, branches into incisive nerve and mental nerve
Term
Which nerve goes to the posterior mandibular teeth?
Definition
inferior alveolar
Term
Which nerve goes to the anterior teeth?
Definition
incisive nerve
Term
What are the branches of the mandibular nerve? (3)
Definition
1.Buccal
2.Lingual
3.Inferior alveolar
Term
Which nerve branches to the tongue?
Definition
lingual nerve
Term
What part of the tongue is the facial nerve responsible for sensations in?
Definition
the anterior 2/3 body
Term
What nerve is responsible for taste sensations on the base of the tongue?
Definition
glossopharyngeal nerve (IX)
Term
What is the accessory nerve(XI) a efferent nerve for?
Definition
the trapezius, sternocleidomastorid, and muscles of the soft palate and pharynx
Term
What is the hypoglossal nerve(XII)
Definition
efferent nerve for the intrinsic and extrinsic muscles of the tongue
Term
Where do the greater and lesser palatine nerve come from? Where do they arise out of?
Definition
come from pterygopalatine ganglion, out of the greater and lesser palatine foramen (greater in front), part of the maxillary brand of trigiminal nerve
Term
What teeth does the inferior alveolar nerve go to?
Definition
the posterior mandibular teeth
Term
What teeth does the incisive nerve go to?
Definition
mand incisors
Term
Which nerve is responsible for taste on the anterior 2/3(body) of the tongue?
Definition
the facial nerve
Term
Which nerve is responsible for taste on the posterior (base) of the tongue?
Definition
the glossopharyngeal(IX)
Term
Which nerve is responsible for taste sensation in the epiglottis?
Definition
the vaguas(X)
Term
What is the accesorry nerve responsible for?
Definition
efferent for trapezius, sternocleidomastoid, and muscles of the soft palate and pharynx
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