Prelims Quiz 1 Flashcards
Parts of the ORAL CAVITY
teeth, tongue, hard palate, and soft palate.
First step in digestion
ingestion
This is where the teeth and tongue work with salivary glands to break down food into small masses that can be swallowed, preparing them for the journey through the alimentary canal.
ingestion
___________ BEGINS WHEN THE TEETH BREAK DOWN INGESTED FOOD
MECHANICAL DIGESTION
SALIVA MOISTENS FOOD AND BEGINS THE PROCESS OF ___________
CHEMICAL DIGESTION
There are three pairs of salivary glands
parotid
sublingual
and submandibular (also called the submaxillary gland).
The tongue manipulates the chewed food into a small mass called a __________
Bolus
3 stages of swallowing
Oral (voluntary)
pharyngeal (involuntary)
Esophageal (LES relaxed)
5 steps in 1 second
- Soft palate is elevated + retracted to prevent nasopharingeal reflux
- Vocal cords are closed Epiglottis swings backward closure the larynx
- UES relaxes
- Larynx is pulled upward streching, opening E and UES
- Contractions of pharyngeal muscle
is a series of hollow organs joined in a long, twisting tube from the mouth to the anus.
GI tract (Gastrointestinal tract)
The hollow organs that make up the GI tract are (6)
mouth, esophagus, stomach, small intestine, large intestine, and anus.
solid organs of the digestive system.
liver, pancreas, and gallbladder
3 Parts of the small intestine
DUODENUM
JEJUNUM
ILEUM
The large intestine includes…..
appendix, cecum, colon, and rectum.
is a finger-shaped pouch attached to the cecum.
appendix
is the first part of the large intestine.
cecum
Bacteria in your GI tract, also called______ or ______ help with digestion
gut flora or microbiome
5 nerves that helps in swallowing process
5 nerves : V,VII, IX, X, XII
Enzymes break down from starch —> sugars
Amylase
Enzymes break down from proteins —> amino acids
Protease
Enzymes break down from lipids—-> Fatty acids + glycerol
Lipase
Enzymes break down from nucleic acids —-> nucleotides
Nuclease
Functions of the stomach acids ( SF, PD,AP,AIF,SDB,CES, OPS)
- Sterilizes food
- Protein digestion
- Activating Pepsin
- Activating Intrinsic Factor
- Stimulating the Delivery of Bile and Enzeymes
- Closing of the Esophageal Sphincter
- Opening the Pyloric Sphincter
Gastric Acid pH?
1.0 - 3.5 pH