ACCESSORY ORGAN NOTES.

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Presentation transcript:

ACCESSORY ORGAN NOTES

TEETH Crown and root (neck) Dentin – bonelike substance Enamel – hardest substance in the body Pulp cavity - blood vessels, nerves and connective tissue

Deciduous (baby teeth) – 20 teeth Permanent – 32 Incisors - cut Cuspids – tear and shred Molars - grind

SALIVARY GLAND Saliva – 99.5 water moistens & softens food Three pairs of glands: parotid Submandibular sublingual

Salivary amylase Digests starch in mouth

GASTRIC GLANDS Goblets cell – produce mucus Mucus – provide protective lining Chief cells – produce pepsinogen Pepsinogen – in presence of hydrochloric acid converts to pepsin

Pepsin – protein digestion in stomach Parietal cells – HCl, intrinsic factor Intrinsic factor – absorption of vitamin B12

INTESTINAL GLANDS Secrete intestinal juice Duodenal glands – alkaline mucus Enzymes in duodenum digest ALL food groups

PANCREAS Water, salts, sodium bicarbonate – neutralizes stomach acid Enzymes that digest all food types All released into duodenum

LIVER Largest internal organ Storage – glycogen, fat soluble vitamins, iron Produces bile Emulsifies (turns into fat droplets) fat Removal of drugs and hormones

GALL BLADDER Stores bile and released into duodenum

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