Unit 2- iCEV Livestock External Components Quiz

Which external component of livestock is responsible for covering and protecting the body that also is used to brush away biting insects and flies?

• Nares

• Skin

• Auricles

• Tail

What is the largest organ on the body?

• Heart

• Liver

• Skin

• Brain

Which of the following is the outermost layer of the skin?

• Dermis

• Hypodermis

• Epidermis

• Subcutaneous

How many layers does the skin consist of?

• Two

• Three

• Four

• Five

Which layer of the skin is directly beneath the epidermis?

• Hypodermis

• Subcutaneous

• Dermis

• Epidermis

How does the epidermis form?

• By the fusion of cells

• By the division of cells, which pushes other cells to the surface

• By the absorption of nutrients

• By the secretion of oils

What does the epidermis produce that forms hair, wool, hooves, and horns?

• Collagen

• Melanin

• Keratin

• Elastin

What pigment does the epidermis contain that is responsible for skin, fur, and wool pigmentation?

• Hemoglobin

• Chlorophyll

• Melanin

• Carotene

Which layer of the skin is responsible for supplying the epidermis with nutrient-saturated blood?

• Epidermis

• Dermis

• Hypodermis

• Stratum corneum

What structures are housed within the dermis?

• Sweat glands and melanin

• Hair follicles, nerve endings, and pressure receptors

• Keratin and collagen

• Fat cells and blood vessels