Skin. the largest organ of the body 1 mm to 2 mm thick almost 2 square meters 6% of a person’s body weight. Functions of the Skin. protection disease-causing organisms dangerous chemicals blood loss fluid loss. Functions of the Skin. temperature regulation. perspiration.
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an area of the skin with a thickened epidermis
ridges of the dermis that push up into the epidermis
the study of fingerprints
a dark brown or black pigment that causes much of the color of human skin
special cells in the skin that produce melanin
a yellowish pigment
Tanning is the body’s attempt to protect itself from the harmful UV raysof the sun.
By tanning, people are actually increasing their risk of skin cancer and causing their skin to age prematurely.
a first-degree burn caused by UV radiation
the tough, white tissue covering the surface of bones
a band of connective tissue that attaches a boneto another bone
a band of connective tissue that attaches a muscleto a bone
a stretch injury to the ligaments of a joint
a microscopic unit of bone consisting of a blood vessel and layers of hard nonliving material around it
layers of nonliving bone material
soft, flexible tissue that makes up a portion of the skeleton
outer ear and tip of nose
between ribs and sternum
acts as shock absorber
= have stripes
the process by which cells obtain usable energy from energy sources
= requires oxygen
= without oxygen
Muscle cells go through lactic acid fermentation when there’s not enough oxygen available for aerobic respiration.