Anatomy of the Skin Layers

The epidermis, the dermis, and the hypodermis (subcutaneous layer)

Langerhans cells are macrophages that phagocytize infectious agents and then travel to lymphatic organs. Melanocytes produce melanin pigment responsible for skin color.

The outermost layer of the epidermis is composed of flattened, dead cells known as the stratum corneum.

<p>Cells begin to die in the stratum granulosum, which is named for the abundance of granules present.</p> Signup and view all the answers

<p>The dermis is composed of dense irregular connective tissue.</p> Signup and view all the answers

<p>Carotene pigment gives a yellowish form, particularly in Asian peoples.</p> Signup and view all the answers

<p>The sebaceous gland produces sebum (oil) to help keep the skin soft and pliable.</p> Signup and view all the answers

<p>The free nerve endings are associated with pain sensation and are located near the dermal papillae.</p> Signup and view all the answers

<p>The most important function of the skin is protection, serving as a barrier against infection, UV light, and disease.</p> Signup and view all the answers

<p>Meissner's corpuscles, which are touch receptors associated with tactility, are located near the dermal papillae.</p> Signup and view all the answers

<p>Sweat produced by the sweat gland is a mixture of water, salts, and urea which acts to cool the body.</p> Signup and view all the answers

<p>The arrector pili muscle pulls up the hair follicle, leading to goose flesh or 'goose bumps'.</p> Signup and view all the answers

<p>Pacinian corpuscles are pressure receptors located deep within the dermis at the boundary of the dermis and hypodermis.</p> Signup and view all the answers

<p>Sebum secreted by the sebaceous gland is a complex lipid which is bactericidal and fungistatic.</p> Signup and view all the answers

<p>The apocrine sweat glands are responsible for the odor of the body and open directly into the hair follicle.</p> Signup and view all the answers

<p>The blood vessels that supply nutrition to the skin are located in two horizontal layers: the deep plexus just above the subcutaneous fat, and a superficial plexus in the papilla.</p> Signup and view all the answers

<p>Epidermis</p> Signup and view all the answers

<p>Keratinized stratified squamous epithelium</p> Signup and view all the answers

<p>Dermis</p> Signup and view all the answers

<p>Phagocytize infectious agents</p> Signup and view all the answers