Lab 14 Digestive System Flashcards
(44 cards)
What are the 2 main components of the digestive system?
- Digestive Tract
- Accessory Organs
What are all the accessory organs?
teeth, tongue, salivary glands, liver, gall bladder, pancreas
What are the gums called?
Gingiva
What are the functions of the tongue?
food manipulation, taste, speech
What is the process of teeth breaking down food?
Mastication
What are the function of inisors?
cutting and shearing foods
What type of tooth tears food with a single cusp?
Canine
How many cusps for premolars have?
2
What are the function of molars?
Grinding food into small pieces
How many teeth are in the average adults mouth?
32
How many teeth are in a child mouth with deciduous teeth?
20
What are the 2 principal parts of a tooth?
Crown: exposed portion of the tooth
Root: imbedded in the alveolus (bony socket) of the maxilla and mandible
What are the 3 pairs of salivary glands and where are they located?
1) Parotid Gland; largest, anterior to the ear
2) Submandibular Glands; inner surface of the mandible
3) Sublingual Gland; anterior and deep to the submandibular glands
What do the salivary glands secrete?
Saliva
What does saliva contain and how does it aid in digestion?
Enzyme: salivary amylase
- begins the digestion of carbohydrates
What are the functions of saliva?
- Lubricating the mouth
- Moisten food
- Dissolve chemicals in food so they can be tasted
What are the 3 sections of the pharynx?
- nasopharnyx
- oropharynx
- laryngopharynx
Which 2 regions of the pharynx are involved in the digestive system?
oropharynx and laryngopharynx
What structure closes of the larynx so foods and fluids do not enter the respiratory tract?
epiglottis
Where does chemical digestion begin?
Stomach
Where is chemical digestion completed in the body?
Small Intestine
In order what are the 3 regions of the small intestine
Duodenum, Jejunum, Ileum
Which region of the small intestine receives secretions from the pancreas, liver and gall bladder?
Duodenum
Where does absorption of nutrients begin in the digestive tract ?
Small Intestine