digestive system anatomy

• digestive system

  A) oral cavity

  B) pharynx

  C) esophagus

  D) stomach

  E) duodenum and small intestine

  F) large intestine

  G) anus

  H) salivary glands

  I) pancreas

  J) liver

  K) gallbladder

  L) intake and digestion

  M) absorption

  N) elimination

  
• esophagus

  A) pharynx

  B) cricoid cartilage of larynx

  C) trachea

  D) esophagus

  E) sternum and rib

  F) aorta

  G) heart in pericardium

  H) diaphragm

  I) c5-c6

  J) 25 cm

  K) 9 3/4 inches

  L) t11

  M) esophagus

  
• stomach

  A) fundus

  B) body

  C) pyloric valve

  D) pyloric portion

  
• stomach

  A) cardiac notch

  B) esophagogastric junction

  C) cardiac antrum

  D) lesser curvature

  E) angular notch

  F) pyloric orifice

  G) pyloric canal

  H) pyloric antrum

  I) pyloric portion

  J) greater curvature

  K) body

  L) fundus

  M) gastric bubble

  
• small intestine

  A) duodenum

  B) RUQ , LUQ

  C) region of ileocecal valve

  D) RLQ

  E) jejunum

  F) LUQ , LLQ

  G) ileum

  H) RUQ , RLQ , LLQ

  
• large intestine

  A) liver

  B) right colic flexure

  C) ascending colon

  D) cecum

  E) vermiform appendix

  F) rectum

  G) anal canal

  H) sigmoid colon

  I) descending colon

  J) transverse colon

  K) left colic flexure

  L) spleen

  
• body habitus

  A) hypersthenic

  B) sthenic

  
• body habitus

  A) hyposthenic

  B) asthenic

  
• accessory organs

  salivary glands

  pancreas

  liver

  gallbladder
• functions of the digestive system

  intake and digestion of food, water, vitamins, and minerals

  absorption

  elimination
• size of the esophagus

  10 inches in length

  3/4 inch in diameter
• location of esophagus

  at MSP C6-T11

  posterior to trachea and heart

  anterior to spine
• structure of esophagus

  when empty it collapse

  upper 1/3 is skeletal muscle (voluntary)

  middle 1/3 is skeletal and smooth muscle

  lower 1/3 is smooth muscle (involuntary)
• cardiac antrum (esophagus)

  distal end below diaphragm, terminal esophagus that is slightly expanded
• function of esophagus

  transport food and liquid to the stomach
• size of stomach

  10 inches long

  holds 1.7 ounces when empty

  1.5 quarts when full
• location of stomach

  left upper quadrant of abdomen
• structure of stomach

  mucosal lining that falls into folds called rugae when empty and distends when full
• cardia (stomach)

  small portion of stomach

  surrounds eg junction
• esophagogastric junction (stomach)

  when the esophagus terminates and the stomach begins
• cardiac orifice (stomach)

  opening of the esophagus to the stomach

  cardiac sphincter controls this
• fundus (stomach)

  most posterior and superior portion

  commonly filled with air called gastric bubble
• body (stomach)

  central and more anterior
• pyloric portion (stomach)

  pyloric antrum and canal
• pyloric orifice (stomach)

  opening between pyloric portion to the small bowel

  controlled by the pyloric sphincter
• small intestine size

  23 feet long

  1.5-2.5 inches in diameter
• location of small intestine

  center and lower abdomen
• structure of small intestine

  duodenum

  jejunum

  ileum
• function of small intestine

  digestion and absorption
• size of duodenum

  8-10 inches in length
• structure of duodenum

  C shaped

  4 parts

  fixed

  retroperitoneal
• ligament of treitz

  holds the duodenum in place
• duodenojejunal flexure (angle of treitz)

  area where duodenum meets jejunum
• appearance of duodenum

  spring or coil when filled with barium
• size of jejunum

  2/5 of small bowel
• location of jejunum

  left upper and lower quadrant
• appearance of the jejunum

  feathery when filled with barium
• size of ileum

  3/5 of small bowel
• location of ileum

  right upper and lower quadrant

  left lower quadrant
• appearance of ileum

  smooth when filled with barium