Chapter 5: The Integumentary System

Flashcards covering key concepts, facts, and terminology related to the integumentary system.

The skin is the body’s __ organ.

largest

The epidermis is the __ layer of the skin.

superficial

The dermis is primarily composed of __ connective tissue.

fibrous

The __ layer lies beneath the dermis and is not part of the integumentary system.

hypodermis

There are two main types of sweat glands: __ and apocrine.

eccrine

__ are skin appendages that grow from follicles and are made up of dead keratinized cells.

Hairs

The __ is the deepest layer of the epidermis and contains stem cells undergoing mitosis.

stratum basale

__ gives skin its color and is produced by melanocytes.

Melanin

In the dermis, the __ layer is composed of dense fibrous connective tissue and makes up about 80% of its thickness.

reticular

The primary function of the arrector pili muscle is to cause __ in response to cold or fear.

goosebumps

Flexure lines are caused by __ at or near joints.

dermal folds

The __ layer of the epidermis is only present in thick skin.

stratum lucidum

The skin can absorb certain __, such as organic solvents.

lipid-soluble substances

__ are fluid-filled pockets that separate the epidermal and dermal layers due to trauma.

Blisters

The average rate of hair growth is approximately __ mm per week.

2.25

The primary role of eccrine sweat glands is __ regulation.

thermoregulation

Sebaceous glands secrete __, which softens hair and skin.

sebum

__ refers to hair thinning that occurs in both sexes after age 40.

Alopecia

The physical and chemical barriers of the skin protect against __ damage.

biological