Pulp C Flashcards
Name the pathway the blood vessels take to the teeth.
- external carotid artery -> maxillary artery -> superior alveolar artery & inferior alveolar artery.
What is the function of microcirculation in the teeth?
- maintain homeostasis
- cause inflammation
What are the two areas that arterioles travel through after entering the apical foramen?
- radicular area
- coronal area
Name the pathway of blood vessels away from the teeth.
- exit at the apical foramen to drain into the maxillary vein (posterior) & facial vein (anterior)
What is the function of the lymphatic system?
- drains fluid/ proteins
- maintain pulp interstitial fluid pressure
- immune defence
What are functional terminal capillary networks composed of?
- precapillary arteriole
- capillaries
- post capillary venule
What are the nerve fibre innervations in the radicular and coronal region?
1) radicular region
- nerves branch peripherally as it moves coronally
- lack plexus of Raschkow
2) coronal region
- branches peripherally
- forms the plexus of Raschkow in the subodontoblastic region.
What are the types of nerves in the pulp & what is their function?
1) Sensory afferent innervation (major)
- nociception
- neurogenic modulation
- regulate dentinogenesis
2) Sympathetic efferent
- neurogenic modulation
- regulate dentinogenesis
What are some possible factors that can control local blood flow to functional units in terminal capillary networks?
1) pre-capillary sphincter
- under local sensory and remote sympathetic neuronal control.
2) Anastomosis
- arteriovenous anastomosis - connect arteriole directly to a venule
- venous-venous anastomosis - connect venule directly to a venule
- U-turn loop arteriole
List some local vascular regulations.
1) endothelial control
- strategic location between the circulating blood and the vascular smooth muscle
2) humoral (blood borne) control
- via neural & inflammatory mediators
3) Metabolic (tissue-related) control
- oxygen -> vasoconstriction
- adenosine -> vasodilator
