The Integumentary System | The Dermis & Hypodermis

The video tutorial explores the integumentary system, focusing on the layers beneath the epidermis, primarily the dermis and the hypodermis. It highlights the differences between the avascular epidermis and the vascular dermis, which contains blood vessels, sensory receptors, hair follicles, and glands. The dermis is divided into the papillary and reticular layers, each with distinct connective tissues. The hypodermis, though not part of the integumentary system, is discussed for its protective and insulating functions.

What is the primary difference between the epidermis and the dermis?

• The epidermis is vascular, while the dermis is avascular.

• The epidermis has more sensory receptors than the dermis.

• The epidermis contains hair follicles, while the dermis does not.

• The epidermis is avascular, while the dermis is vascular.

Which layer of the dermis is composed of dense irregular connective tissue?

• Epidermal layer

• Reticular layer

• Papillary layer

• Hypodermal layer

Which connective tissue type is found in the papillary layer of the dermis?

• Dense regular connective tissue

• Dense irregular connective tissue

• Areolar connective tissue

• Adipose connective tissue

What is the function of the erector pili muscles in the dermis?

• To cause hair to stand on end

• To produce sweat

• To anchor the epidermis

• To secrete oil

What type of gland is associated with hair follicles and secretes oil?

• Eccrine sweat gland

• Apocrine sweat gland

• Sebaceous gland

• Ceruminous gland

What is the primary function of adipose tissue in the hypodermis?

• To provide thermal insulation

• To secrete oil

• To produce sweat

• To anchor the dermis

What is the role of the subcutaneous layer in the body?

• To secrete oil

• To anchor the epidermis

• To produce sweat

• To act as a thermal insulator