Digestive system - oral cavity & dentition (teeth) Flashcards
The ingestion function is the …
Acquistion of nutrients
The digestive function is the …
Mechanical and chemical breadkdown of ingested food - absorbs nutrients from the foods and liquids consumed.
The propulsion function is the …
Movement of food through Gastrointestional (GI) tract via peristalsis and segmentation
The secretion function is the …
Release of compounds into digestive system such as mucisn, water, acid, and enzymes
The secretion function is the …
Release of compounds into digestive system such as mucisn, water, acid, and enzymes
The absorption function is the …
Transport of nutrients from the digestive system to the circulatory system
The defecation function is the …
Elimination of feaces
What is peristalsis?
A series of wave-like muscular contraction that occurs throughout the GI tract - it moves food through the digestive tract
What is segmentation?
Bac-an-forth churngin that occurs mainly in the small intestine (breaks down and mixes food) *movement is independent of gravity
How does the eiglottis work?
Goes into action every swallow.
Pushes food or liquid away from your larynx towards esophagus
What passes through the Nasopharynx > air and/or food & drink?
Air only > nasal cavity (air)
What passes through the Oropharynx > air and/or food & drink?
Air + food and drink (it is the oral cavity)
What passes through the Laryngopharynx > air and/or food & drink?
Air + food and drink
What is the Larynx?
Air to trachea to lungs
What is the oesophagus system?
Food and drink to stomach
Ingestion is an important entrance for …… & …… into the body, and the early stages of the ………….. process (deglutition)
food & drink
Swallowing
The functions of the oral cavity & associted structures include:
- Ingestion
- Sensory perception (food)
- Mechanical & chemical digestion (mastication, lubrication & enzymatic breakdown of food bt amylase in the saliva)
- Passageway (communication between the digestive & respiratory tracts
- Vocalisation (important in the modification of the sounds produced)
What are important for articulation of speech sounds?
Lips
Teeth
Tounge
Hard palate
Soft palate
Cheeks
Jaw
