Anat and phys Marieb chap 23 digestive system part 1
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| Name two groups of digestive organs | show 🗑
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| show | digests and absorbs food
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| Name parts of alimentary canal | show 🗑
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| show | Teeth, tongue, gallbladder
Digestive glands -Salivary glands,Liver,pancreas
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| show | 1. Ingestion
2. Propulsion
3. Mechanical digestion
4. Chemical digestion
5. Absorption
6. Defecation
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| show | Mechanoreceptors and chemoreceptors Intrinsic and extrinsic controls
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| show | Respond to stretch, changes in osmolarity and pH, and presence of substrate and end products of digestion Initiate reflexes that activate or inhibit digestive glands stimulate smooth muscle to mix and move lumen contents
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| Functions of Intrinsic and extrinsic controls | show 🗑
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| Enteric nerve plexuses (gut brain) initiate _______ in response to stimuli in the GI tract | show 🗑
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| show | stimuli inside or outside the GI tract CNS centers and Autonomic nerves
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| ________ peritoneum on external surface of most digestive organs | show 🗑
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| ________ peritoneum lines the body wall | show 🗑
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| __________ is between the two peritoneums and lubricates mobile organs | show 🗑
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| show | Mesentery
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| Funtions of mesentery | show 🗑
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| ________ organs lie posterior to the peritoneum | show 🗑
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| __________ organs are surrounded by the peritoneum | show 🗑
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| Four basic layers (tunics) of alimentary canal | show 🗑
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| Layers of alimentary canal from inside out | show 🗑
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| Mucosa Functions | show 🗑
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| show | epithelium, lamina propria, and muscularis mucosae
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| show | Simple columnar epithelium and mucus-secreting cells which protects digestive organs from enzymes, eases food passage. May secrete enzymes and hormones
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| Mucosa Lamina propria | show 🗑
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| Muscularis mucosae | show 🗑
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| show | Dense connective tissue Blood and lymphatic vessels, lymphoid follicles, and submucosal nerve plexus
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| Muscularis externa | show 🗑
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| show | Visceral peritoneum
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| Visceral peritoneum is replaced by the _____ in the esophagus | show 🗑
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| show | adventitia and serosa
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| Intrinsic nerve supply of the alimentary canal is composed of the ____ and the ______ | show 🗑
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| Function of the submucosal nerve plexus | show 🗑
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| Function of the myenteric nerve plexus | show 🗑
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| The Enteric Nervous System is linked to the CNS via ____ ____ ____ | show 🗑
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| show | Long
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| ________ impulses inhibit secretion and motility in the enteric nervous system | show 🗑
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| show | Parasympathetic
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| show | stratified squamous epithelium
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| show | skeletal muscle
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| show | nasopharynx
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| show | Repositioning and mixing food during chewing, formation of the bolus, initiation of swallowing, speech, and taste
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| ____ muscles change the shape of the tongue | show 🗑
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| _____ muscles alter the tongue’s position | show 🗑
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| show | filiform fungiform circumvallate foliate terminal sulcus
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| show | whitish, give the tongue roughness and provide friction
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| Fungiform | show 🗑
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| Circumvallate (vallate) | show 🗑
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| These three house taste buds | show 🗑
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| show | on the lateral aspects of the posterior tongue
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| show | circumvallate and linguinal tonsil
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| show | parotid, submandibular, and sublingual
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| show | Cleanses the mouth Moistens and dissolves food chemicals Aids in bolus formation Contains enzymes that begin the breakdown of starch
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| _____ salivary glands continuously keep the mouth moist | show 🗑
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| ______ salivary glands produce secretions when ingested food stimulates chemoreceptors and mechanoreceptors in the mouth | show 🗑
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| Salivatory nuclei in the brain stem send impulses along _____ fibers in cranial nerves VII and IX | show 🗑
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| Strong ____ stimulation inhibits salivation and results in dry mouth (xerostomia) | show 🗑
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| show | 20
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| __ permanent teeth | show 🗑
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| show | Incisors, Canines, Premolars (bicuspids) and molars
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| show | 2 incisors 2 premolars 3 molars
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| show | crown, root, cementum, periodontal ligament, gingival sulcus, dentin, pulp cavity, pul, root canal
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| show | Exposed part above gum
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| Root | show 🗑
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| Cementum | show 🗑
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| Periodontal ligament | show 🗑
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| Gingival sulcus | show 🗑
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| show | Bonelike material under enamel
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| show | Cavity surrounded by dentin
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| Pulp | show 🗑
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| show | Extends from pulp cavity to the apical foramen of the root
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| Adventitia | show 🗑
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| show | round mass of food prepared by mouth for swallowing
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| Deglutition | show 🗑
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