Integumentary System Flashcards by Sophia Faith Nagum

Anatomy comes from the Greek word _____ which means _____

Anatome, dissection

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Study of developmental anatomy

Embryology

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Study of the description of skeleton

Osteology

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Study of the description of joints

Syndesmology

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Study of the description of muscles

Myology

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Study of the description of viscera

Splanchnology

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Study of the description of organs of circulation

Angiology

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Comprised with the skin with its associated structures such as hairs, glands horns, hoofs, claws, etc.

Integumentary system

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Homeotherms

Warm- blooded

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Poikilotherms

Cold-blooded

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Difference between sebaceous glands and sweat glands

Sebaceous glands - secretes sebum
Sweat glands- secretes sweat

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Function of sebaceous glands

Lubricates skin & discourage bacterial growth

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Function of sweat glands

Regulate body’s temperature/ waste excretion

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Study of the biology of animals that live alongside humans

Animal science

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Concerned with the business aspects of producing livestock animals

Animal husbandry

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Deals with breeding, farming, and care of farm animals

Animal husbandry

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Study of the structure of the body and the relation of its parts

Anatomy

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Description of the structure of a single type of species

Special anatomy

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Description of the structure of a single type of species

Special anatomy

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Deals with the form and structure of the principal domesticated animals, largely descriptive in character

Veterinary anatomy

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Scientific study of the functions and mechanisms which work within a living system

Physiology

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Lie toward the belly

Ventral structures

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Outer layer of skin

Epidermis

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Contains hair follicles, sweat glands, sebaceous glands, nerves and blood vessels

Dermis

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Contains larger blood vessels and nerves

Hypodermis

Drying and hardening of the superficial cells

Keratinization and cornification

Local increase in thickness in response to continuous trauma

Callus

Consists of layers of dead, flattened cells

Stratum corneum

Contains keratinocytes

Stratum granulosum

Has a spiny appearance because of its desmosomes

Stratum spinosum

Layer of mitotically active cuboidal or columnar cells

Stratum basale

Variable amounts of fat, the _____ _____ are present in the hypodermis

Panniculus adiposus

Hair which form the smooth outer coat

Guard hairs

Also called the undercoat, which are fine and often curly

Wool hairs

Long stiff hairs with specialized innovation that renders them effective as organs of touch

Tactile hairs

Tiny bundle of smooth muscle fibers that erects hair

Arrector pili muscle

Dermis of hoofs and horns

Corium

Thin, waxy layer that covers the outside of the hoof

Periople

Connection between hoof wall and corium

Laminae

Shock-absorbing modification of the subcutis

Digital cushion

Soft type of horn

Epikeras

Formed over the cornual process, a bony lore that projects from the frontal bone of the skull

Horns

Accessory digits

Dewclaws

Do not bear weight in paws

Dewclaws

Hornlike growths on the medial sides of horse's limbs

Chestnuts

Small projections of cornfield epithelium in the center of the palmar part of the fetlock of the horse

Ergots

Epithelial growths that forms the distinctive outer covering, or plumage

Feather

External anatomical structure of birds that is used for eating and for preening killing prey, etc.

Bill I beak

Fleshy growth or crest on the top of the head of birds

Comb

Fleshy caruncle hanging from various parts of the head or neck birds/mammals

Wattle

Erectile, fleshy protuberance on the forehead of turkey

Snood

Functions of integumentary system (6)

Physical protection and barrier Prevention of dehydration Body temperature regulation Sensory information Metabolic actions Excretion of wastes

What vitamin is synthesized from cholesterol in the skin after sun exposure?

Cholecalciferol (D3)

Layers of epidermis (5)

Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum basale

Structure of hooves

Corium Periople Laminae

How are horns formed

Cornual process

Which digits do dewclaws correspond to?

Digits 2 and 5

Where are chestnuts located on horses

Proximal to the carpus

Skin layer that has variably present, poorly stainable cells

Stratum lucidum

Adexna of the skin

Hair Horns Hooves Wattle Comb Snood Feather Bill Beak Dewclaws Chestnuts Ergots

Base of the follicle where living cells divide and grow to build the shaft

Hair bulb

Intimately covers the root of the hair and is continuous with the epithelial cells covering the dermal papilla

Internal epithelial root sheath

Surrounds the internal root sheath, is continuous with the epidermis, and gives rise to the sebaceous glands

External epithelial root sheath