ACBS 406 Lecture Notes - Lecture 3: Earwax, Perception, Environmental Protection
1 Nov 2018
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Functions: enclosing barrier, environmental protection, temperature regulation, sensory perception, motion & shape, antimicrobial, blood pressure control, secretion & excretion, adnexa, storage, pigmentation, vitamin d production. The skin is an important indicator of internal disease: disruption in skin = effect on all the functions above, disease of the skin are very common!! Which of the following is not a layer of the skin: epidermis, dermis, hypodermis. Not part of the animal but live on the animal: ear mites (otodectes cynotis, fleas, ticks, mange, warbles, myliasis. Spend a portion or all the parasite lifecycle on the skin. Where/how they live: on the skin, within or under the skin, piercing the skin (sucking blood) Signs & symptoms of reactions to parasites: inflammation, edema, itching, licking, chewing, & scratching. Live in external ear canal & feed on epidermal debris (earwax) Clinical signs: dogs, excessive scratching & rubbing of ears, head shaking, black or brown waxy secretion, obstruction of ear canal with coffee ground-like discharge.
