Digestive system Flashcards

1
Q

what are the two main groups of digestive system organs

A

Alimentary canal
Accessory digestive organs

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2
Q

which of these is not a part of the alimentary canal:
mouth
intestine
pancreas
esophagus

A

Pancreas

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3
Q

What are the organs associated with the alimentary canal

A

Mouth
Pharynx
Esophagus
Stomach
Small/large intestine

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4
Q

what the name for the group of digestive organs thats a continuous long tube

A

Alimentary canal

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5
Q

What do the accessory digestive organs consist of

A

Teeth
Tongue
Gallbladder
Salivary glands
Liver
Pancreas

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6
Q

Describe the visceral peritoneum

A

Covers external surfaces of digestive organs

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7
Q

Describe the parietal peritoneum

A

Lines walls of abdominopelvic cavity

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8
Q

What is the name of the slitlike space between the visceral and parietal perionea

A

Peritoneal cavity

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9
Q

What is a mesentery

A

a structure suspending most digestive organs from the body wall

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10
Q

What is a retroperitoneal organ

A

An organ that loses its mesentery during development

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11
Q

What is the word for an organ that loses its mesentery during development

A

Retroperitoneal

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12
Q

Name two examples of retroperitoneal organs

A

Duodenum
Pancreas

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13
Q

What is peritonitis

A

Inflammation of the peritoneal cavity

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14
Q

How does peritonitis occur

A

Bacteria being introduced into the peritoneal cavity through a variety of way

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15
Q

Hepatic arteries serve what organ

A

Liver

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16
Q

Gastric arteries serve what organ

A

Stomach

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17
Q

Splenic arteries serve what organ

A

Spleen

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18
Q

Superior and inferior mesenteric arteries serve what organ(s)

A

Small and large intestine

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19
Q

How much of the CO do the hepatic, gastric, splenic and mesenteric arteries receive

A

about 1/4

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20
Q

Venous return from the digestive system is indirect via _______

A

the hepatic portal circulation

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21
Q

In the hepatic portal system, where does venous blood exit via

A

Hepatic veins

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22
Q

What are the 4 typical layers of the GI tract

A

Mucosa
Submucosa
Muscularis externa
Serosa

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23
Q

What are the three layers of the Mucosa

A

Surface epithelium
Lamina propria
Muscularis mucosae

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24
Q

What layer of mucosa has goblet cells

A

Surface epithelium

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25
What kind of cells are present in the surface epithelium of the mucosa
Columnar
26
What layer of the mucosa has isolated lymph nodules
Lamina propria
27
What layer of the mucosa has loose connective tissue with capillaries
Lamina propria
28
What layer of mucosa has a thin layer of smooth muscle cells
Muscularis mucosae
29
What layer of the GI tract has moderately dense CT
submucosa
30
What layer of the GI tract's main function is elasticity
Submucosa
31
What layer of GI tract has the main role of propulsion and mixing movements
Muscularis externa
32
What layer of the GI tract has 2 layers, one inner circular and one outer longitudinal
Muscularis externa
33
What layer of the GI tract forms sphincters
Muscularis externa
34
What is the function of sphincters
Help ensure unidirectional travel Compartmentalizes the functional units of the digestive system
35
What layer of the GI tract can characterized by loose CT covered by a single layer of squamous epithelial cells
Serosa
36
What is the adventitia
The outer layer of some digestive organs to really keep said organ fixed in place
37
What two types of organs have adventitia
Retroperitoneal organs Esophagus
38
What organ has NO serosa
Esophagus
39
What kind of organs have both adventitia and serosa
Retroperitoneal organs
40
What type of tissue does the adventitia consist of
Fibrous connective tissue
41
What two components is the mouth composed of
Vestibule Oral cavity proper
42
orbicularis oris is a muscle where
lips
43
buccinators are muscles where
Cheeks
44
What palate is closer to the front of the mouth
Hard palate
45
What palate is closer to the back of the mouth
Soft
46
What type of palate has palatine bones and palatine processes
Hard palate
47
What closes the nasopharynx when we swallow
Soft palate
48
What are the two arches that join the soft palate to the tongue and oropharynx
palatoglossal palatopharyngeal
49
what is the soft palate mostly composed of
Skeletal muscle
50
What is the function of the arches in your mouth
Keeps the palate in place
51
What are the two types of muscle in the tongue
Intrinsic skeletal muscles Extrinsic skeletal muscles
52
What types of tongue muscles are not attached to bone, but just exist in 3 planes in the tongue
intrinsic skeletal muscles
53
What is the function of the intrinsic skeletal muscles
change the shape of the tongue
54
What type of skeletal muscles attach the tongue to bones
Extrinsic skeletal muscles
55
What is the function of the extrinsic skeletal muscles of the tongue
Move the position of the tongue in space
56
What attaches the tongue to the floor of the mouth
Lingual frenulum
57
What are papillae
Projections on tongue
58
What are the four types of papillae on tongue
Filiform Fungiform Vallate Foliate
59
What type of papillae contain keratin, are in rows at the tip of the tongue and DO NOT contain taste bus
Filiform
60
What type of papillae are mushroom shape and contain taste buds
Fungiform
61
What type of papillae are a mushroom shape and widely scattered on the tongue
Fungiform
62
What type of papillae make a V shaped row at the back of the tongue and contain taste buds
Vallate
63