Gross Anatomy 15 - [Digestive System] Flashcards
Functions
Ingest
Digest
Absorb
Excrete
Organs that are part of the digestive system
Mouth
Pharynx
Esophagus
Stomach
Small intestine
Large intestine
Rectum, anus
Accessory organs (4)
Layers of digestive tract, from inner to outermost
Mucosa
Submucosa
Muscle
Serosal- peritoneum forms the lining of the abdominal cavity
What’s peristalsis
Waves of muscle contraction and relaxation
Parts of oral cavity that help in digestion
Teeth
Tongue
Salivary glands
Where does the digestion starts
Mouth
Pharynx
Esophagus - Esophageal sphincter (PES,LES)
Functions of the stomach
Regulates
Secretes gastric juice - HCl
Secretes hormones - Gastrin —> HCl, Glycoprotein —> vit B12
Digests
Absorbs
Structure of stomach
LES
Fundus
Body
Lesser/ Greater curvature
Rugae
Pylorus
Pyloric sphincter
Cells involved in stomach
Mucous —> Mucine
Parietal—> HCl, instrinsic factor
Chief —> Pepsin
Muscles involved in stomach
Longitudinal
Oblique
Circular - Chyme, peristalsis
What’re the parts of the small intestine
Duodenum
Jejunum
Ileum
What’re the functions of the small intestine
Digests
Absorbs
Secretes hormones - Secretin
What get absorbed inside the lacteals
Fats
What’s the structure of the large intestine
Cecum
Colon - ATDS
Rectum, anus
What’s the main difference in terms of function between small and large intestine
Small - absorbs nutrients
Large - absorbs water, electrolytes