Lecture 7 Flashcards
What are the three branches of the cranial nerves
ophthalmic
maxillary
mandibular
__________________ is a terminal branch of the trigeminal nerve (along with the maxillary and mandibular nerves). It provides sensory innervation to the skin, mucous membranes and sinuses of the upper face and scalp.
The ophthalmic nerve (CNV1)
________________ carries sensory information from the lower eyelid and cheek, the nares and upper lip, the upper teeth and gums, the nasal mucosa, the palate and roof of the pharynx, the maxillary, ethmoid and sphenoid sinuses, and parts of the meninges
The maxillary nerve
_______________ is a terminal branch of the trigeminal nerve (along with the maxillary and ophthalmic nerves). It has a sensory role in the head, and is associated with parasympathetic fibres of other cranial nerves.
mandibular nerve
__________ supply sensory innervation of the face and tongu. Cell bodies found in trigeminal ganglion
somatic sensory neurons
What is the function of somatic motor neurons in the trinomial nerve
chew/ move mouth
What are the 3 functions of the trigeminal nerve
- facial expression
- visceral motor
- Innervates taste buds
What is the function of the somatic motor neurons in the facial nerve 7
innervate muscles and fascial expression
In facial nerve 7, ________________ is made of 2 parasympathetic ganglia related to CN 7 and is marked by asterisks. Postgaglionic neurons innervate salivary glands, lacrimal glands, and glands on the nose
visceral motor neurons
______________________ sensory information from the taste buds on anterior surfaces of the tongue. CN7
special sensory neurons
_____________ in CN 9 this nerve innervates 1 muscle of the pharynx
somatic motor neurons
Where is the pharynx
posterior to the nasal and oral cavity
____________ in CN9 there is 1 parasympathetic ganglion, the otic ganglion, related to CN 9, post ganglionic neurons innervated salivary glands
visceral motor neurons
________________ conduct taste and general sensation from posterior tongue and oral cavity
special and general sensory neurons
what are the 3 special functions of the glossopharngia, nerve
- initiates swallowing
- Initiates salva production
- supples taste buds
_________________________ CN 10 innervate muscles of larynx and pharynx and are involved in swallowing
somatic motor neurons
___________________- CN 10 preganglionic parasympathetic neurons in dorsal nucleus of the vagus, provide parasympathetic innervation of body. Post ganglionic neurons in or near targets
visceral motor neurons
_____________________ CN10 sensory afferents form thoracic and abdominal viscera, including carotid body also component of CN 9
visceral sensory neurons
What are the 3 special functions of the vagus nerve
- the wander: it integrates the heart, lungs, and other viscera
- sensory afferent of other organs
What in olfactory receptor cells in the olfactory epithelium detect odors
cilia detect odors
_________________ unusual neurons that die throughout life and are continually generated from stem cells in the olfactory epithelium
olfactory receptor cells
olfactory receptor cells project axons through the skull into olfactory bulb where they synapse with _________________ Axons of ____________________________ project in olfactory tract to olfactory cortex
mitral cells.