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cali integumentary

cali anatomy and physiology

integumentary system the skin and the structures that develop from it
integument the skin
cutaneous membrane also the skin or integument
the five functions of the skin are protection, excretion, temperature regulation, sensory perception, and synthesis of vitamin D
what are the two major layers of the skin epidermis and the dermis
which of the major layers is the outer layer? epidermis
the epidermis is composed of what epithelium stratified squamous
which of the two major layers of the skin is the thicker inner layer? dermis
the dermis is composed of what type of tissue? fibrous connective
what is beneath the dermis? hypodermis
the epidermis lacks what? blood vessels
the epidermis obtains nutritients from what? the blood vessels in the underlying dermis
what does the epidermis protect the body against? the entrance of pathogenic organisms, ultraviolet radiation, and excessive water loss
what is the most inner layer of the cells? the stratum basale
which layer continuously produces new cells by mitotic cell division? stratum basale
what enables the epidermis to repair itself if it is injured? the constant division of cells in the stratum basale
a waterproofing protein that is resistant to abrasion keratin
what consists of numerous layers of dead, flat, keratinized cells? stratum corneum
what is composed of fibrous connective tissue dermis
what provides strength, extensibility, and elasticity dermis
what two type of fibers are abundant in the dermis collagen and elastic
conelike projections of the dermis that fit into recesses in the epidermis dermal papillae
what receptors are located in the deeper portions of the dermis pressure, pain, heat, and cold
what plays an important role in temperature regulation? dermal blood vessels
the subcutaneous layer or superficial fascia ataches the skin to unerlying tissues and organs is hypodermis
the hypodermis is composed of what two types of tissue loose and adipose tissue
serves as a heat insulator and a storage site for fat hypodermis
red pigment in red blood cells that gives red color to blood hemoglobin
yellowish pigment found in the stratum corneum and dermis carotene
brown black pigment that is formed by melanocytes melanin
special cells found in the deeper layers of the epidermis melanocytes
the amount of melanin that a person can produce is what inherited
the greater the production of melanin the _____ the skin color darker
melanin protects the body from what ultraviolet radiation
when melanin is concentrated in small patches it is called freckles
the increased production of melanin is a protective ______ ______ homeostatic mechanism
why do tans dissapear? because the tanned cells migrate to the surface and are sloughed off
Created by: delamatera