A&P Digestion

Created by amanda_danielle 

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Functions of the Digestive System

Ingestion, Peristalsis, Digestion mechanical, chewing, Absorption of nutrients, and Defecation of waste

Features of the Mouth

Vestibule, Oral Cavity, Hard Plate, Soft Plate; Uvula, Tongue, Stratified Squamous Epithelium

Vestibule

Space between the lips and the teeth

Oral Cavity

Behind the teeth

Hard Plate

Rough of mouth

Soft Plate

Forms a muscular arch, which extends posteriorly and downward as cone shape projection called the Uvula

Tongue

Thick muscular organ, located on the floor of the mouth, composed of extrinsic and intrinsic muscles

Extrinsic Muscles

outside of tongue and moves into it

Intrinsic Muscles

Inside of tongue, criss crossing across tongue, composed of skeletal muscles

Tooth Structure

Enamel, Dentine, Pulp Cavity, Root, Crown, Gingiva, Alveolar Process, Root Canal, Periodontal Ligament, Cementum

Permanent Teeth: Types and #

Incisors (2), Cuspids-Canine (1), Bicuspids (2), Molars (3)

Incisors

Cutting, 2

Cuspids (Canine)

Tearing, 1

Bicuspids

Grinding, 2

Molars

Grinding, 3

How many Permanent Teeth

Total of 32

Deciduous Teeth

Incisor (2), Cuspid (1), Molar (2)

Total # of Deciduous Teeth

A total of 20

Salivary Gland

Exocrine glands, Secretions: Mucous, Serous

Mucous

Thick and sticky, sympathetic stimulation

Serous

Watery, contains alpha amylase, parasympathetic stimulation

Types of Salivary Glands

Parotid Gland, Submadibular gland, Sublingual Gland

Parotid Gland

Secretes serous, duct by upper 2nd molar

Submandibular Gland

Mostly secretes serous and mucous, opens near frenulum

Sublingual Gland

Mostly mucous and serous, multiple ducts at Lateral base of tongue

Function of Pharynx

Common place for air and food

Location of Pharynx

Behind nasal cavity

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