Integumentary System

The major regions of a hair shaft include all of the following except ________. A. Cuticle B. External root sheath C. Cortex D. Medulla

The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis? A.goblet cells, parietal cells, and chondrocytes B.monocytes, reticulocytes, and osteocytes C. fibroblasts, macrophages, and mast cells D.osteoblasts, osteoclasts, and epithelial cells

The lateral aspects of an equine hoof wall are called A. Heels. B. Quarters. C. Soles. D. Toes.

The pigment found in skin is produced by A. Keratinocytes. B. Langerhans cells. C. Melanocytes. D. Merkel cells.

A dendritic or Langerhan cell is a specialized ________. A. Squamous epithelial cell B. Phagocytic cell C. Nerve cell D. Melanocyte

Sudoriferous (sweat) glands are categorized as two distinct types. Which of the following are the two types of sweat glands? A. Sebaceous and merocrine B. Mammary and ceruminous C. Eccrine and apocrine D. Holocrine and mammary

The dermis ________. A. Is an avascular connective tissue layer B. Lacks sensory corpuscles and glands C. Has two layers D. Is where melanocytes are found

The protein found in large amounts in the outermost layer of epidermal cells is collagen. A. True B. False

In a compound follicle a primary hair is also known as a __ hair. A. Guard B. Satellite C. Sinus D. Tactile

How many epidermal layers/strata does thick hairless skin typically have? A. 1 B. 2 C. 3 D. 5 E. 4

Which animals have tail glands that help them identify individual animals? A. Cats and goats B. Dogs and cats C. Goats and sheep D. Sheep and dogs

A needle would pierce the epidermal layers of the forearm in which order? A. Basale, spinosum, granulosum, corneum B. Basale, spinosum, granulosum, lucidum, corneum C. Granulosum, basale, spinosum, corneum D. Corneum, granulosum, spinosum, basale

As an animal ages and its hair turns white, the medulla becomes filled with A. Air B. Fat C. Melanin D. Water E. Brawndo

Horns are composed of A. Bone B. Dense, irregular connective tissue C. Dense, regular connective tissue D. Keratin

The macrophages of the epidermis are the A. Keratinocytes. B. Langerhans cells. C. Melanocytes. D.Merkel cells.

The integumentary system is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which of the following cells serve this function? A. Cells found in the stratum spinosum B. Macrophages called dendritic cells (Langerhans Cell). C. Leratinocytes, because they are so versatile D. Tactile cells

Which is NOT an important role of the arrector pili muscles? A. Help retain heat by changing the angle of the hair shafts B. Communicating fear or aggression C. Allowing the animal to reduce the amount of blood flow to the skin

How many hairs are found in an average hair follicle? A. 1 B. 10 C. 15 D. 3

Hooves grow from the A. Coronary band. B. Coronary groove. C. Periople. D. White line.

One of the most common benign tumors of cats is A. Basal cell tumor. B. Malignant melanoma. C. Merkel cell carcinoma. D. Squamous cell carcinoma.

Which of the following is NOT a function of skin? A. Serving as a blood resivoir B. Sensation C. Protection from dessication and abrasion D. Excretion of metabolic wastes E. Serving as a barrier to pathogenic organisms F. All of the above are functions of skin

Another name for a hoofed animal is an A. Uncinate. B. Underate. C. Undulate. D. Ungulate.

Which muscles attached to the hair follicles cause goose bumps? A. Arrector integument B. Arrector pili C. Arrector folliculi D. Levator folliculi

The nose of a white cat is especially susceptible to A. Basal cell tumor. B. Malignant melanoma. C. Merkel cell carcinoma. D. Squamous cell carcinoma.

A sudoriferous gland is also known as a/an A. Sebaceous gland. B. Anal gland. C. Sweat gland. D. Tail gland.

Which layer of the epidermis consists of 25-30 layers of dead, cornified cells? A. Stratum granulosum B. Dermis C. Stratum hornyum D. Stratum corneum E. Stratum spinosum F. Hypodermis

Which layer of skin allows it to move freely over underlying bone and muscle without tearing? A. Dermis B. epidermis C. hyperdermis D. hypodermis

What tissue composes the reticular dermis? A. adipose B. areolar CT C. dense irregular CT D. epithelial tissue

In hair, soft keratin is found in the_____. A. medulla B. cuticle C. cortex D. pyrex

The dermis has two major layers. Which layer constitutes 80% of the dermis and is responsible for the tension lines in the skin? A. the reticular layer B.the subcutaneous layer C. the papillary layer D. the hypodermal layer

In which species of animal would you find a planum nasolabiale? A. Canine B. Equine C. Feline D. Porcine E. Hippogriff

Which species of animal produces enough sweat to turn into a white froth? A. Bovine B. Canine C. Equine D. Porcine

Hair growth and density are influenced by hormones, nutrition, and, in some cases, stress. A. True B. False

Despite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been previously stretched and/or torn? A. There is an episode of acute pain due to the large number of tactile corpuscles. B. The appearance of visible, silvery-white scars is an indication of stretching of the dermis. C. The blood vessels in the dermis rupture and the blood passes through the tissue, causing permanent "black-and-blue marks." D. The stretching causes the tension lines to disappear.

The cells thought to aid in the sense of touch are A. keratinocytes. B. Langerhans cells. C. melanocytes. D. Merkel cells.

One of the most common skin tumors in dogs over the age of 5 is A. Basal cell tumor B. Malignant melanoma C. Merkel cell carcinoma D. Squamous cell carcinoma

The layer of the skin where cells are actively undergoing keritanization and apoptosis: A. Stratum spinosum B. Stratum corneum C. Stratum basale D. Stratum granulosum

The dermis is rich in blood vessels and nerve fibers. A. True B. False

Apocrine sweat glands are found mostly in the: A. Eyelids B. External ear C. Lips D. Area in back of the knee

Which dark, horny structures are found buried in the long, caudal hairs of equine fetlocks? A. Chestnuts B. Dewlcaws C. Ergots D. Metacarpal pads

The implantation angle of a hair is increased when the A. Arrector pili muscle contracts. B. Arrector pili muscle relaxes. C. Erector pili muscle contracts. D. Erector pili muscle relaxes.