Integumentary System

includes skin, glands, hair, and nails. It protects the body, regulates temperature and performs other vital functions.

consists of keratinized stratified squamous and epithelial tissue. As cells age they migrate from deeper regions to the exterior surface and become more flattened and slough off then are replace by younger cells

is connective tissue and is where hair follicles are. in addition to containing capillaries and small blood vessels.

two major types are both loose connective category: areolar and adipose tissue. below is muscle

epithelial cells at the base of the hair follicle in the dermis

accessory structures originating in the dermis that secrete sebum on to hair emerging from the hair follicle

accessory structures that produces ear wax. only found in dermis of ear canal

changes scents. bacteria uses apocrine sweat components as nutrients. may be a considered a sex pheromone

originating throughout the dermis of the human body, which secrete sweat used primarily for thermoregulation

• removes metabolic wastes • synthesizes vitamin d • communication tool 4.sensory tool • provides protection to the body • main organ of temperature regulation

• perspiration 2. diameter changes of blood vessels.

hypothalamus and skim

increase in diameter of blood vessels in the dermis that reduces blood flow through the skin. this allows more blood to flow near surface of the body so body heat carried by the blood is transferred to external environment next it produces sweat

by the contraction of cutaneous smooth muscles, but the skin also also reduces the blood flow keeping heat in