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A&P2 24 25
Digestion and Metabolism
62
Other
Undergraduate 2
03/16/2009

Additional Other Flashcards

 


 

Cards

Term
Functional Segments of Digestive System
Definition

Mouth

Esophagus

Stomach

Small Intestine

Large Intestine

Term
Accessories to Digestive System
Definition

Tongue

Teeth

Salivary Glands

Pancreas

Liver

Gallbladder

Term

Digestion Process:

Ingestion

Definition
Eating
Term

Digestion Process:

Secretion

Definition
Of enzymes/acids/buffers by glands in GI tract
Term

Digestion Process:

Mixing and Propulsion

Definition
Moving Food
Term

Digestion Process:

Absorption

Definition
Of Digestive food from Gi tract to cells using blood/lymph vessels
Term

Digestion Process:

Defecation

Definition
Rectum Emptying
Term

GI Tract Anatomy:

Layers, Inner to Outer

Definition

1. Lumen

2. Mucosa

3. Submucosa

4. Muscularis

5. Serosa

Term

Mucosa:

epithelium

Definition

Non-Keratinized Stratified Squamous

Simple Colummar Cells (absorption & secretion)

Mucus Secreting Cells

Entero Endocrine Cells (hormones)

Term

Mucosa:

Lamina Propria

Definition

Loose C.T.

High Blood Vessel Content

High Lymph Vessel Content

High Nerve Content

Term

Musosa:

Muscularis Mucosa

Definition
Folds of Smooth muscle to raise surface area for digestion
Term

Submucosa

Definition

Loose C.T.

High Blood Vessel Content

High Lymph Vessel Content

High Gland Content

Has submucosal plexus- nerve supply from autonomic nervous system

Regulate Gland Secretion in mucosa

Regulates vasoconstriction in mucosa

Regulate movement in mucosa

Term
Muscularis in...
Definition

Mouth

Pharynx

Upper Esophagus

Outer Anal Sphincter

Skeletal Muscles

 

Term
Muscularis in rest of GI tract- Smooth Muscles in two layers
Definition

Outer Longitudinal Layer

Inner Circular Layer

Term
Muscularis also has...
Definition
Myenteric Plexus- Main motility control in GI tract
Term
Serosa
Definition

Epithelium & C.T.

Beneath Diaphram- name changes into visceral peritoneum

Term
Peritoneum
Definition
Largest serous membrane in body
Term
Peritoneum- Outer Parietal Layer
Definition
Lines abdominal cavity
Term
Peritoneum- Inner visceral layer
Definition

Covers actual organ

Between peritoneal cavity filled up with serous fluid to absorb shock and reduce friction.

Term
Mouth
Definition

Cheeks- Zygomatic Bone

Lips

Soft palate (skeletal muscle)

Hard Palate (palatine bone)

Tongue

Term

Salivary Gland:

Saliva %

Definition

99.5% Water

.5% Solutes

Term

Salivary Gland:

Saliva comes from...

Definition

Salivary Glands-

Porotid, Sublingual, Submandible

Buccal Glands- In mucus membrane lining mouth

Term
Salivary Gland:
Saliva Function
Definition
Starts digestion of carbs
Term

Salivary Glands:

Saliva- Digestion of carbs

Definition

Dissolves food

Keeps mucus membranes in mouth moist

Has lysosyme to fight teeth decay

 

Term
Tongue
Definition

Skeletal muscles covered with mucus membrane

Important in food manipulation and swollowing, also in speech

Term
Tongue: Glands
Definition
Secreting liquid lipase to start triglyceride digestion
Term
Tongue: Pappillae
Definition
With Taste Buds
Term
Tongue: Ligual Frenulum
Definition
Folds of mucus membranes in secure tongue with floor of mouth
Term
Pharynx
Definition
A tube of skeletal muscles lined with mucus membrane
Term
Pharynx Connects...
Definition
Nose with esophagus and larynx (in throat)
Term
Pharynx Layers- Nasopharynx
Definition

Top

Only for respiration

Term

Pharynx Layers

Oropharnx

Definition

Middle

Respiration and Digestion

 

Term

Pharynx Layers:

Laryngopharynx

Definition

Bottom

Respiration and Digestion

Term

Teeth:

Crown

Definition

Enamel- hardest tissue in body

Dentin- main tooth tissue

Pulp cavity- nerves & vessels

Term

Teeth:

Neck

Definition
Gums
Term

Teeth:

Root

Definition

Root Canal

Cementum- Secures tooth with ligament

Periodontal ligament

Term

Teeth:

Amount

Definition
32
Term

Teeth:

Digestion in mouth- mechanical

Definition

Food is cut & mixed with saliva (bolus)

Term

Teeth:

Digestion in mouth: Chemical

Definition
Lingual lipase in tongue starts fat digestion- salivary amylase changes starch into maltose
Term

Teeth:

Incisors

Definition

2

Cut

Term

Teeth:

Canine

Definition

1

Tear/Shred

Term

Teeth:

Premolars

Definition

2

Crush/Grind

Term

Teeth:

Molars

Definition

3

Crush/Grind

Term
Deglutition
Definition
Swallowing
Term

Deglutition

Mouth

Definition
Voluntary
Term

Deglutition:

Pharynx

Definition
Involuntary
Term

Deglutition:

Esophagus

Definition
involuntary
Term
Esophagus
Definition
A collapsable tube that connects your pharynx with your stomach
Term
Esophagus- Layers
Definition

Mucosa

Submucosa

Muscularis

Adventitia (fibrous c.t.)

Term
From esophagus:
Definition
Food moves down to stomach by contractions in esophagus known as peristalsis (the adjacent segments will alternately contract and relax)
Term
Stomach
Definition

"J" shaped enlargement of the GI tract

Mixing and storing area for food

Continues fat digestion

Converts bolis into chyme (juice)

Absorbs Water, alcohol, drugs

Term
When stomach is empty...
Definition
Mucosa lies into folds called "rugae"
Term
Mucosa epithelium...
Definition
Digs deep into lamina propria to form gastric pits and gastric glands
Term

Gastric gland cells:

Mucus neck cells

Definition
Secrete mucus
Term

Gastric gland cells:

Parietal cells

Definition
to release HCL
Term

Gastric Gland Cells:

Cheif Cells

Definition
Secrete pepsinagen & gastric lipase
Term

Gastric gland cells

Enteroendocrine Cells

Definition

Secretes Hormone Gastrin (G cells)

Gasrin raises stomach secretion/motility raises HCL from parietal cells, raises gland growth

Term

Muscularis in stomach

3 layers

Definition

Oblique

Circular

Longitudinal

Term

Stomach digestion:

Mechanical

Definition
Peristalsis- also known as mixing waves
Term

Stomach Digestion:

Chemical

Proteins-Peptides

Definition

Protein broken down by pepsin (pepsinogen)

Pepsinogen-HCL-Pepsin

Inactive..........Active

Term

Stomach Digestion:

Butterfat of Milk

Definition
Broken down into fatty acids and monoglycerides by using gastric lipase
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