updated body regions

what is the 1st body ]system of the digestive system?

oral cavity

what is the 2nd body region of the digestive system?

mouth

what is the 1st thing that happens to food in the mouth?

you take a bite of cheeseburger (fat, protein, carb)

what is are the accessory structures to the mouth?

• enzymes

• teeth

• parotid glands

• submandibular glands

• tongue

• sublingual glands

what are the secretions of submandibular glands in the mouth?

• mucous acini

• serous acini

• salivary amylase

what is the 2nd thing that happens to food?

• it becomes a bolus of protein, fats, carbs

• and goes into oropharynx

what is the 3rd and 4th body region of the digestive system?

• 3rd= oropharynx

• 4th= pharynx

what is the 5th body region of the digestive system and accessory structures?

• superior esophageal sphincter

• 5th= esophagus

• inferior esophageal sphincter

what type of tissue does the esophagus have?

stratified squamous epithelium

is the esophagus the only body region with stratified squamous ET

yes

what is the 6th body region of the digestive system?

stomach

what are the stomachs accessory structures?

• gastric pits

• chief cells: secretes pepsinogen

• parietal cells: secretes hydrochloric acid

• enteroendocrine cells:secretes hormones like gastrin.

• chyme

• pyloric sphincter

what tissue type is the stomach? what are defining characteristics?

• simple columnar epithelium

• gastric pits

what is the 7th body region of the digestive system? what are its accessory structures?

• 7th=duodenum

• liver

• pancreas

what is the duodenum/ small intestines tissue type?

simple columnar ET

what is the 8th body region of the digestive system? what are accessory structures?

• 8th= liver

• hepatocytes

• bile

what is the 9th body region of the digestive system? what are accessory structures?

• 9th=pancreas

• bicarbonate

• lots of enzymes

what is the 10th body region of the digestive system? what are its accessory structures?

• 10th=jejunum

• super long

• pilicae circularies

• villi

• microvilli

what tissue type is jejunum/ small intestine?

simple columnar epithelium

what is the 11th body region of the digestive system? what are its accessory structures?

• 11th=ileum

• ileocecal valve

• liquid waste

what is the 12th body region of the digestive system? what are its accessory structures?

• 12=cecum

• appendix

what is the 13th body region of the digestive system?

• 13th= appendix

what is the 14th body region of the digestive system?

ascending colon

what is the 15th body region of the digestive system?

• 15= transverse colon

what is the 16th body region of the digestive system?

16=descending colon

what is the 17th body region of the digestive system?

• sigmoid colon

what tissue type is the large intestine?

simple columnar epitheilium

what accessory structure is apart of the large intestine?

tons of goblet cells

what is the 18th body region of the digestive system? and accessory structures?

• 18= rectum

• anus

• solid waste

name 2 liver functions of bile

• Neutralizes stomach acid (HCl) as chyme enters the duodenum.

• Emulsifies fats — breaks large fat droplets into smaller droplets.