Integumentary System Lecture Notes

Comprehensive practice questions covering the layers of the epidermis, the structure of the dermis, glandular classifications, and the hypodermis.

What substance is found in the Stratum granulosum and eventually forms Eleiden and Keratin?

HYALOKERATIN (also called KERATOHYALINE)

Which layer of the epidermis contains $20+$ cell layers and appears to have crystalline spears under a microscope?

Stratum spinosum

What is the alternative name for the Stratum basale due to its unique ability to divide?

S. germinativum

How many cell layers thick is the Stratum basale?

$1$ or $2$ layers thick

What term describes the epidermis since it has no blood supply?

Avascular

What are the five layers of the epidermis listed in the notes from exterior to interior?

Stratum corneum, Stratum lucidum, Stratum granulosum, Stratum spinosum, and Stratum basale

What is the deeper layer of the skin, also known as the coreum?

The DERMIS

What type of tissue is the dermis considered to be?

Dense irregular connective tissue

What is the scientific name for sweat glands?

Sudoriferous Glands

What specific substance is secreted by the Sebaceous Glands?

Sebum

What category of glands deliver their secretion to specific locations via ducts?

Exocrine glands

Which type of exocrine gland secretes fluids only, such as salivary glands?

Merocrine Glands

What type of gland is the sebaceous gland, characterized by secreting fluid containing whole cells?

Holocrine Gland

Which type of gland produces a secretion containing fluid and the broken tips of cells?

Apocrine Gland (example: mammary gland)

True or False: The Hypodermis is considered a part of the skin.

False (It is a fatty layer below the dermis that binds skin to muscle)