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Flashcards in Digestive System Deck (128)
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91

Drains lover

common hepatic duct

92

drains gallbladder

cystic duct

93

What is formed by union of common hepatic and cystic ducts?

bile ducts

94

What are the 3 parts of the portal triad?

Hepatic artery, hepatic portal vein, and bile duct

95

Carries blood from digestive organs to liver for processing

hepatic portal vein

96

Oxygen-rich arterial blood in the liver

hepatic artery

97

Nutrient-rich venous blood in the liver

hepatic portal vein

98

Runs between hepatocyte platesq

liver sinusoids

99

What is the flow of blood in the liver?

hepatic artery and hepatic portal vein -> liver sinuoids-> central vein

100

Remove bacteria worn-out RBCs, and other debris from blood as flows past

Kupffer cells/ Stellate macrophages

101

Produce bile, process bloodbome nutrients, store fat-soluble vitamins and plays important role in detoxification

Hepatocyte

102

Secreted bile flows through what toward bile ducts?

bile canaliculi

103

Yellow-green alkaline solution

bile

104

cholesterol derivatives that function to emulsify fats

bile salts

105

bilirubin

chief bile pigment

106

Where in the pancreas do the exocrine functions occur?

acinar cells

107

How does the pancreatic juice enter the dudoenum

pancreatic duct

108

What are the 3 components pancreatic juice?

water, digestive enzymes, and bicarbonate ions

109

What causes the gallbladder to contract, stimulate secretion of enzyme-rich pancreatic juice and relaxes hepatopancreatic juice

CCK

110

stimulates secretion of bicarbonate-rich pancreatic rich

secretin

111

What digestive processes occur in the small intestine?

Mechanical breakdown and propulsion: segmentation and peristalsis

Digestion: enzymes from pancreas; brush border enzymes of microvilli

Absorption: Most water and virtually all nutrients absorbed

112

List what optimal digestive activity depends on:

1. bile from liver and gallbladder

2. Digestive enzymes from pancreas

3. Bicarbonate ions from the pancreas

4. Slow, measured delivery of chyme from stomach


113

Most common motion of small intestine, mixes chyme with bile, pancreatic juice, and intestinal juice, moves ileocecal valve

Segmentation

114

Begins late in intestinal phase

migrating motor complex

115

Which 2 mechanisms increase motility of ileum and cause ileocecal sphincter to relax?

Gastroileal reflex and gastrin released by stomach

116

Three bands of smooth muscle

teniae coli

117

Pocket-like sacs in wall of large intestine

Haustra

118

From small intestine to the anal canal where does the food go?

cecum, ascending colon, transverse colon, descending colon, sigmoid colon

119

List the subdivisions of the large intestine

cecum, appendix, colon, rectum, and ana canal

120

What are the 3 sphincters in the anus? Type of muscle?

Internal anal sphincter (smooth muscle) and external anal sphincter (skeletal muscle)