Final Flashcards
oral cavity proper
space between dental arcades
oral fissure
opening between upper and lower lips; entrance to oral cavity
Vomeronasal organ
Location?
Function?
Location: base of nasal septum
Function: olfactory receptors for sexual stimuli (pheromones)
What is the minor palatine a direct branch of?
maxillary artery
What is the descending palatine a direct branch of?
maxillary artery
What branches off the descending palatine?
- major palatine artery
- sphenopalatine artery
Mechincal Papillae
- filiform
- conical
Gustatory Papillae
- fungiform
- vallate
- foliate
What three extrinsic tongue muscles are innervated by the hypoglossal nerve?
- styloglossus
- hyoglossus
- genioglossus
What is the only motor nerve to the tongue?
hypoglossal nerve
The parotid and zygomatic salivary glands are innervated by what CN?
CN IX - Glossopharyngeal nerve
The mandibular and major sublingual salivary glands are innvervated by what cranial nerve?
CN VII - Facial nerve
What type of teeth do dogs have?
Brachydont
What kind of cells produce enamel? Can it regenerate?
Ameloblasts (enamelblasts) produce it
It cannot regenerate
This septa is located between adjacent teeth…
Interalveolar septa
This septa is located between roots of the same tooth…
Interradicular septa
Mesial surface?
toward first incisor
Distal surface?
away from first incisor
How many teeth is an adult dog supposed to have?
42
What is the distribution of teeth in an adult dog?
- I3/3
- C1/1
- P4/4
- M2/3
This is per one side! Multiply by two for total number of teeth!
What teeth do dogs have that cats lack?
- Upper P1
- Lower P/1 and P/2
- Upper and Lower M2 and M3
What system uses numbers to ID teeth?
Triadan System
Three key constrictors for the pharynx?
- hyopharyngeus
- thyropharyngeus
- cricopharyngeus
What is formed by the 2nd endoturbinate?
Ethmoidal nasal concha/ Middle nasal concha
What is the main pathway for air in the nose?
ventral nasal meatus
Largest sinus in the head?
Frontal sinus
located in the rostral 2/3 of frontal bone
What makes up the glottis?
arytenoid cartilage and vocal fold
Laryngeal ventricle
lateral evagination of the laryngeal mucosa on each side between the vestibular fold (rostral border) and the vocal fold (caudal border)
Action of cricothyroideus muscle?
tenses vocal fold
What nerve innervates the cricothyroideus m.?
Cranial laryngeal nerve
What is the only dilator muscle of the larynx?
Cricoarytenoideus dorsalis muscle
Main abductor of the larynx?
Cricoarytenoideus dorsalis muscle
Action of the cricoarytenoideus lateralis m.?
narrows, closes glottic cleft
Action of Thyroarytenoideus m.?
relax vocal fold, constrict glottis
Thyroarytenoideus m. has two parts. What are they? What do they do?
Ventriculatis muscle = constricts glottis
Vocalis muscle = relax vocal fold
What CN innervates the larynx?
Vagus nerve via the Cranial laryngeal n. and caudal laryngeal n.
Caudal laryngeal n. innervates all of the intrinsic muscles of the larynx EXCEPT:
cricothyroid m.
What is glaucoma?
build up of aqueous humor
Which CN innervates the lateral rectus and the retractor bulbi muscles of the eye?
CN VI - Abducens
CN IV innervates which muscle of the eye?
dorsal oblique
What CN handles most of the eye muscles?
CN III
Primary blood supply to the head?
common carotid artery
Carotid sinus?
Baroceptor (feedback for blood pressure regulation) located at the base of the internal carotid artery
Carotid body?
Chemoreceptor at bifurcation of the internal and external carotid aa or in the wall of the carotid sinus
Keeps watch on O2 and CO2 levels in blood, plus blood pH levels
Can adjust respiration up or down as needed
Terminal lymph node in the head?
Medial Retropharyngeal Lymph Node
What CN conduct parasympathetic fibers?
CN III, VII, IX, and X
What CN is the sole innervation to the trapezius m.?
CN XI - Accessory
T/F: There is an epidural space within the skull.
FALSE
Pachymenix?
Dura mater
Leptomeninges?
Arachnoid membrane and Pia mater
