46 Questions
Which of the following is NOT a function of hair/fur mentioned in the text?
Protection
What is the name for the top of the nose in dogs, cats, pigs, sheep and goats
Planum Nasale
Which gland produces a secretion that coats the hair and traps moisture?
Sebaceous glands
Which phase of hair growth is the resting phase when the hair stops growing?
Telogen phase
Which type of sweat gland is NOT found in the planum nasale or footpads
Sebaceous glands
What assists in communication of identification of individuals; sensitive to sex hormone levels
Tail glands
Which type of gland stores secretion produced and is expressed during defecation or when the animal is frightened or excited?
Anal sacs
What is NOT a primary function of claws and hooves?
Courtship
Horns are
Epidermal in origin and structurally similar to hair, grow continually and are not shed
Which of the following is NOT a function of horns or antlers mentioned in the text?
Thermoregulation
Which layer of the skin is primarily composed of keratinized clear cells and are inly found in very thick skin areas
Stratum lucidum
What are the majority of epidermal cells
Keratinocytes
Which layer of the epidermis is responsible for keratinization?
Stratum spinosum
What is the primary function of the dermis?
Provides structural strength
Which layer of the dermis is just beneath the epidermis and forms dermal papillae?
Papillary layer
What are the most commonly found cells in the dermis?
Fibroblasts, adipocytes, and macrophages
What are foot/paw pads primarily composed of?
All 5 epidermal layers
What is the function of foot/paw pads?
All of the above
Primarily adipose tissue for thermo-insulation and mechanical shock absorption
Hypodermis
What are ergots and chestnuts?
Dark brown, horny patches on legs of horses
Which of the following is NOT a function of the hypodermis?
Produce keratin
What is the function of Langerhans cells
Phagocytize microbes and stimulate other cells of immune systerm
Which layer of the epidermis is responsible for producing new cells?
Stratum germinativum
What is the function of melanocytes?
To produce melanin
Which layer of the epidermis is the outermost and thickest layer?
Stratum corneum
In what layer of the epidermis are keratohyaline granules synthesized
Stratum granulosum
In which layer of the epidermis are langerhans cells located
Stratum spinosum
Which layer of the epidermis is attached to the epithelial basement membrane
Both A and C
What is the function of merkel cells
Form disks with nerve endings at epidermal-dermal junction, thought to aid in touch sensation
Contains meissners corpuscles
Dermis
Vestiges of 2nd and 4th digits
Ergots
Vestiges of carpal and tarsal pads of the 1st digit
Chestnuts
Which type of sweat gland produces sweat that empties onto the skin surface?
Eccrine glands
Identify the cutaneous pouches of sheep
Infraorbital, Interdigital, Inguinal
Term for the loss of large % of hair volume at one time due to metabolic stress or illness
Telogen Effluvium
Which phase of hair growth is the active growth phase when the hair shaft lengthens?
Anagen phase
Transitional period between anagen and telogen phases
Catagen phase
What type of sweat gland empties into hair follicles
Apocrine glands
Have some antibacterial and antifungal properties
Both A and C
Has a hard outer layer composed of keratin, with an inner layer of corium
Hooves and claws
Identify the correct statement regarding Antlers
Dermal bone & arise from skull, are shed annually
What is the specific term used for domestic animals that are bred to be horned free
Polled
What is present in both sexes in giraffe's but only in male okapi's
Ossicones
What is conical or columnar skin-covered bone structures attached to the skull with vascularized innervated connective tissue
Ossicones
Which structure develops as cartilage initially, hardens into bone and fuses to the skull at sexual maturity
Ossicones
Which of the following is a characteristic of telogen phase of hair growth?
Quiescent, resting phase
Test your knowledge of the integumentary system and its related structures, including the layers of the epidermis, keratinization process, dermal structures, and functions of the hypodermis. Explore unique features like foot pads and nasal planum.
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