The Digestive System Flashcards
Ingestion
Eating
Mechanical processing
Chewing
Digestion
Chemical reaction involving enzymes
Secretion
Enzymes
Putting things in that are useful to digestive process
Excretion
Through the liver
Gets rid of toxins
Absorption
Bring nutrients into blood stream
Compaction
Things you don’t absorb
Pressed together
Diarrhea
Peristalsis
Wave like contraction, propels things
Smooth muscle
Segmentation
Another word for digestion
Churning to mix contents for digestion
Intraperitoneal
Membrane that surrounds peritoneum
Retropeeitoneal
(Behind it)
Pancreas, duodenum, kidneys, ascending and descending colon
Parietal
Cover wall of cavity
Visceral
Covers organs and guts
Greater omentum
Greater curvature of stomach
Lesser omemtum
Lesser curvature up to liver
Transverse and sigmoid
Mesocolon
Mesentery
Encircles all of small intestine
Labial frenulum ligament
Labia (lips)
Mucus membrane
Palatoglossal arch
Closest to tongue
Palatoglossal pharynx
Closer to pharynx
Tongue
Lingual foramen
Parotid gland
Largest in cheeks
Submandibular
Below mandible
Sublingual
Below tongue
Fauces
Opening from oral cavity to pharynx
Lingual tonsil
Base of tongue
Protect from infection
Crown
Part of tooth above gingiva
Enamel
Hardest substance in body
Crystalyn
Dentin
Bone like
Underneath enamel
Bulk of tooth
Pulp
Soft part of tooth
CT, BV, stem cells maintain Dentin
Neck
Narrow of tooth
Root
Embedded in bone
Root canal
Apical foramen
Periodontal ligament
CT fibers from senentum to bones
Incisors
Cutting teeth
Cuspids
Canines
Tearing
Bi and tricuspids
Grinding
How many deciduous teeth?
20
How many adult teeth?
32
Arcade
Mamdicular and maxillary(inferior)
Palatal
Towards palate
Buccal
Outwards toward cheek
Mesial
Toward incisors
Distal
Toward molars
Occlusal
Covers part that does all chewing
Deglutition
Swallowing
Bolus
Buccal phase
Voluntary
Pharyngeal phase
Reflex
Esophageal
Reflex to autonomic
Rugae
Allows stomach to expand
Mucosa
Simple columnar for secretion
There’s no adventitia for
Serosa
Formation of chyme
Chief cells
Pepsinogen
G cells
Gastrin
Parietal cells
HCL
Duodenum
.25 m
Submucosal glands
Most chemical digestion
Major duodenal papilla:delivers material from
Pancreas:makes bicarbonate
Jejunum
2.5 m
Ileum
3.5m
Biggest
Peyers patches (B T cells): longest
Mucosa
Simple columnar
Plica(folds) and villi(finger like extensions):increase surface area for absorption
Lacteals
Submucosa
Submuscosal plexus
Serosa
Holds it all together
Brush border
Has small microvilli
Goblet cells
Rectum
Anal canal
Anal columns
Anus
Internal and external anal sphincters
Internal sphincters
Smooth muscle
External sphincters
Skeletal muscle
Large intestine
No villi
More lymphoid tissue
Mass peristalsis and segmentation
Water absorption
Mass peristalsis
Occurs in larger intestine after a large meal
Liver functions
Filters:nutrients, wastes, RBCs, and toxins
Produces blood proteins, urea, bile
Right lobe of liver
Largest
Left lobe of liver
Smaller
Quadrate lobe of liver
4 sided
Caudate
Tail
Faliciform ligament
Help connect liver to diaphragm and coronary ligament
Round ligament: fetus
Hepatic portal vein
Brings blood to liver for filtering
Hepatic artery
O2 to liver
Hepatic duct
Bike duct microscopically
Hepatic lobule
Central vein
Cleans it out
Sinusoid capillaries
Hepatocytes
Kupffer cells
Hepatocytes
Fixed macrophage
Gallbladder
Concentrates
Parts of gallbladder
Fundus
Body neck
Cystic duct:carries bile down common bike duct
Bile pathway
R and L hepatic duct
Common hepatic duct
Common bile duct
Pancreas
Enzymes
Produce hormones
Neutralize bicarbonate
Pancreatic duct
Acini
Pancreatic islets:hormones, insulin, glucogon