Flashcard: Integumentary (No retake)

Front

What is the papillary layer of the dermis?

Back

The papillary layer is the uppermost layer of the dermis, consisting of loose connective tissue that contains blood vessels and sensory neurons. It is responsible for providing nutrients to the epidermis and forming fingerprints.

Front

What type of cell produces melanin?

Back

Melanocytes are specialized cells located in the epidermis that produce melanin, the pigment responsible for skin color.

Front

What are dermal ridges and their significance?

Back

Dermal ridges are raised areas of the dermis that create patterns on the epidermis, such as fingerprints. They enhance grip and tactile sensitivity.

Front

What is the function of sebaceous glands?

Back

Sebaceous glands secrete sebum, an oily substance that lubricates and waterproofs the skin and hair.

Front

What are keratinocytes?

Back

Keratinocytes are the primary cell type found in the epidermis, responsible for producing keratin, a protein that provides strength and waterproofing to the skin.

Front

What role do Merkel cells play in the skin?

Back

Merkel cells are specialized cells in the epidermis that function as mechanoreceptors, providing the sense of touch.

Front

What are the differences between eccrine and apocrine glands?

Back

Eccrine glands are sweat glands that are found all over the body and help regulate temperature, while apocrine glands are located in specific areas (like armpits) and secrete a thicker, milky sweat that can lead to body odor.

Front

What is the function of Langerhans cells?

Back

Langerhans cells are dendritic cells in the skin that play a crucial role in the immune response by detecting pathogens and presenting them to T-cells.

Front

What is the significance of the stratum corneum?

Back

The stratum corneum is the outermost layer of the epidermis, consisting of dead keratinized cells that provide a barrier to protect underlying tissues from infection, dehydration, and environmental damage.

Front

How does skin color vary among individuals?

Back

Skin color variation is primarily due to the amount and type of melanin produced by melanocytes, influenced by genetic factors and exposure to sunlight.