Nerves Flashcards
What are the two parts of the autonomic nervous system?
Sympathetic and Parasympatheic
What are some actions of the sympathetic nervous system?
Fight or flight: innervates organs causing general increase in heart rate, respiration, decrease in salivary flow. Also shuts down to stomach and extremities (cold and clammy - pupils dilate)
What does the term Reflex Arc mean?
Short cut for messages to the brain. Sensory input to spinal cord and motor response out.
What is the difference between response to sensory and motor neurons?
Sensory = feel pain, touch, proprioception Motor = response to the pain, voluntary control of muscles
Which nervous system are the cranial nerves a part of?
PNS
Stimulation to which nervous system will cause an increase in salivary flow?
Parasympathetic
Stimulation to which nervous system will cause a decrease in salivary flow?
Sympathetic
What is the name of cranial nerve V? What is the name of its ganglion?
Trigeminal nerve
- trigeminal ganglion / semilunar or gasserion
What are the 3 divisions of the V cranial nerve?
V1 – Opthalmic
V2- Maxillary
V3- Mandibular
Through what structure do the following fibers exit the skull?
V1 – Superior orbital fissure
V2 – F. Rotundum
V3 – F. Ovale
Is V1 motor or sensory?
Is V2 motor or sensory?
Is V3 motor or sensory?
Sensory
Sensory
Both Motor and Sensory
Which division of V innervates the muscles of mastication?
V3 - mandibular
Which nerve supplies innervation to the muscles of facial expression?
VII - facial
Which cranial nerve supplies the submandibular and sublingual gland?
VII - chorda tympani
Which cranial nerve supplies the parotid gland?
IX- glossopharyngeal
The lingual nerve is joined by a branch of the seventh cranial nerve (facial nerve) called what?
What does this branch supply?
Called the chorda tympani
Supplies afferent - taste to/from anterior 2/3 of tongue
Sympathetic & parasympathetic - efferent to submand and sublingual salivary glands
Which nerve carries fibers to the minor salivary glands on the soft palate?
VII- greater petrosal (of facial) secretory (ANS)
What soft tissues of the head and neck are supplied by the branches of the glossopharyngeal nerve?
IX - posterior 1/3 of tongue (taste, and few taste buds of the pharynx area)
Parasympathetic secretory to parotid gland
Motor - pharyngeal area and muscles
Sensory - pharynx and posterior 1/3 of tongue
What 3 cranial nerves make up the Pharyngeal plexus?
IX- glossopharyngeal
X- vagus
XI- accessory
What is the name, function, foramen/pathway of cranial nerve I, and is it sensory or motor?
Olfactory
Smell
Cribiform plate
Sensory
What is the name, function, foramen/pathway of cranial nerve II, and is it sensory or motor?
Optic
Sight
Optic Canal
Sensory
What is the name, function, foramen/pathway of cranial nerve III, and is it sensory or motor?
Oculomotor
Eye Muscles
Superior orbital fissure
Motor
What is the name, function, foramen/pathway of cranial nerve IV, and is it sensory or motor?
Trochlear
Eye Muscles
Superior Orbital fissures
Motor
What is the name, function, foramen/pathway of cranial nerve V, and is it sensory or motor?
Trigeminal
Both sensory and motor
sensory: Teeth, skin of face, head
Motor: Muscles of mastication
What is the name, function, foramen/pathway of cranial nerve VI, and is it sensory or motor?
Abducens
Eye muscles
Superior orbital fissure
Motor
What is the name, function, foramen/pathway of cranial nerve VII, and is it sensory or motor?
Facial
Both sensory and motor
Stylomastoid
Sensory: posterior to ear, taste anterior 2/3 of tongue
Motor: muscles of facial expression
ANS: Salivary and lacrimal glands
What is the name, function, foramen/pathway of cranial nerve VIII, and is it sensory or motor?
Vestibulocochlear (also auditory)
Hearing and balance
Internal Acoustic Meatus
Sensory
What is the name, function, foramen/pathway of cranial nerve IX, and is it sensory or motor?
Glossopharyngeal
Both sensory and motor
Sensory: posterior 1/3 of tongue - taste, pain
Motor: muscles of s.palate, pharynx, ANS-secretion of s. glands
Jugular foramen
What is the name, function, foramen/pathway of cranial nerve X, and is it sensory or motor?
Vagus
Both sensory and motor
Sensory: skin around ear, taste: posterior of tongue.
Motor: pharynx, larynx, soft palate (ANS: salivary glands)
Jugular foramen
What is the name, function, foramen/pathway of cranial nerve XI, and is it sensory or motor?
Accessory
Trapezius and SCM muscles
Motor
Jugular Foramen
What is the name, function, foramen/pathway of cranial nerve XII, and is it sensory or motor?
Hypoglossal
Muscles of tongue
Hypoglossal canal
Motor
What is the way to remember the names of the cranial nerves?
ON OLD OLYMPUS TOWERING TOPS A FINN ‘VEE’ GERMAN VIEWED A HOP
What is the way to remember if the nerves are sensory or motor?
SOME SAY MARRY MONEY BUT MOTHER BOLDY SAYS BAD BUSINESS MARRY MONEY
