Integumentary System Worksheet Answers Pdf

This layer also contains lymphatic capillaries, nerve fibers, and touch receptors called the Meissner corpuscles. A total lack of melanin is caused by the genetic disorder called albinism (See Disorders of the…Integumentary System below). Collagen fibers provide structure and tensile strength, with strands of collagen extending into both the papillary layer and the hypodermis. Integumentary system worksheet answers pdf answer. The reticular layer appears reticulated (net-like) due to a tight meshwork of fibers. Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness, strength, and water-resistant properties. The keratinocytes in the stratum spinosum begin the synthesis of keratin and release a water-repelling glycolipid that helps prevent water loss from the body, making the skin relatively waterproof.

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Integumentary System Quiz Pdf

By the end of this section, you will be able to: Describe the layers of the skin and the functions of each layer. Reproductive System11. Although you may not typically think of the skin as an organ, it is in fact made of tissues that work together as a single structure to perform unique and critical functions. Link] If you zoom on the cells of the stratum spinosum, what is distinctive about them? The more superficial papillary layer serves as an anchor point for the epidermis above and is intimately connected to the deeper reticular layer. The body mass index (BMI) is often used as a measure of fat, although this measure is, in fact, derived from a mathematical formula that compares body weight (mass) to height. Describe how the cells change as they become integrated into the different layers of the epidermis. Integumentary system quiz pdf. Neither albinism nor vitiligo directly affects the lifespan of an individual. Schaum's Outline of Human Anatomy and Physiology, 4th Edition. More Human Body HEREMore Puzzles HEREWhat's included:Two Crossword puzzles with and without a word bank for classroom differentiationWord searchAnswer KeysCrossword puzzle 1 vocabulary (system names only): Circulatory SystemDigestive SystemEndocrine SystemExcretory SystemImmune SystemIntegumentary SystemLymphatic SystemMuscular SystemNervous SystemReproductive SystemRespiratory SystemSkeletal SystemCrossword puzzle 2 and word search vocabulary: Includes the system names above plus: Cell. Students will summarize their knowledge of the following human body systems: skeletal, muscular, circulatory, endocrine, digestive, immune, integumentary, nervous, excretory, respiratory, and reproductive.

Dermal papillae increase the strength of the connection between the epidermis and dermis; the greater the folding, the stronger the connections made (Figure 5. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. Skin that has four layers of cells is referred to as "thin skin. " The student knows that living systems at all levels of organization demonstrate the complementary nature of structure and function. As the stratum basale continues to produce new cells, the keratinocytes of the stratum spinosum are pushed into the stratum granulosum. Integumentary system practice questions. Systems covered include integumentary system, skeletal system, muscular system, nervous system, somatic and special senses, endocrine system, blood, cardiovascular sys. Cosmetic procedures, such as microdermabrasion, help remove some of the dry, upper layer and aim to keep the skin looking "fresh" and healthy.

Integumentary System Worksheet Grade 6

It also has numerous sensory, and autonomic and sympathetic nerve fibers ensuring communication to and from the brain. Layer of skin between the epidermis and hypodermis, composed mainly of connective tissue and containing blood vessels, hair follicles, sweat glands, and other structures. Check out the unit and save 20% by clicking here. The dermis might be considered the "core" of the integumentary system (derma- = "skin"), as distinct from the epidermis (epi- = "upon" or "over") and hypodermis (hypo- = "below").

Integumentary system. Link] These cells have desmosomes, which give the cells their spiny appearance. Which ethnicities do you think are exempt from the possibility of albinism? Cells in the stratum corneum are periodically shed. Students will learn about the parts and functions of the integumentary system. Fibers made of the protein elastin that increase the elasticity of the dermis. The stratum granulosum has a grainy appearance due to further changes to the keratinocytes as they are pushed from the stratum spinosum. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. McGraw-Hill Education. This thin layer of cells is found only in the thick skin of the palms, soles, and digits. Intercellular vesicle that transfers melanin from melanocytes into keratinocytes of the epidermis. Melanin comes in different shades of brown and black. Superficial layer of the dermis, made of loose, areolar connective tissue. Organisms and environments.

Integumentary System Practice Questions

Therefore, its accuracy as a health indicator can be called into question in individuals who are extremely physically fit. The defect is primarily due to the inability of melanocytes to produce melanin. Melanin gives hair and skin its color, and also helps protect the DNA in the nuclei of living cells of the epidermis from ultraviolet (UV) radiation damage. This product includes 10 different crossword puzzles and their answer keys. The video and worksheet cover the following system: The integumentary system specifically the topic of our skin.

Recent studies indicate that a distressing percentage of our population is overweight and/or clinically obese. Too much sun exposure can eventually lead to wrinkling due to the destruction of the cellular structure of the skin, and in severe cases, can cause sufficient DNA damage to result in skin cancer. Genetic disorder that affects the skin, in which there is no melanin production. It has only two layers: the papillary layer with papillae that extend into the epidermis and the lower, reticular layer composed of loose connective tissue. The amount of melanin produced, and therefore UV protection, is directly correlated with the amount of sunlight exposure.

Integumentary System Worksheet Answers Pdf Answer

A basal cell is a cuboidal-shaped stem cell that is a precursor of the keratinocytes of the epidermis. This happens when the oxygen supply is restricted, as when someone is experiencing difficulty in breathing because of asthma or a heart attack. Learning Objectives. Melanosomes are temporary structures that are eventually destroyed by fusion with lysosomes; this fact, along with melanin-filled keratinocytes in the stratum corneum sloughing off, makes tanning impermanent. Not only is this a problem for the individuals affected, but it also has a severe impact on our healthcare system.

The dermis is made of two layers of connective tissue that compose an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts (Figure 5. A word bank is included, which can be removed to make the worksheet more challenging. This superficial layer of the dermis projects into the stratum basale of the epidermis to form finger-like dermal papillae (see Figure 5. Answers for Critical Thinking Questions. Digestive System Puzzle. View the University of Michigan WebScope at? Fascia is a thick connective tissue wrapping that surrounds skeletal muscles anchoring them to surrounding tissues and investing groups of muscles. They also tend to be more sensitive to light and have vision problems due to the lack of pigmentation on the retinal wall. Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The worksheet has a puzzle section and an identify section. Individuals with albinism tend to appear white or very pale due to the lack of melanin in their skin and hair. Use these graphic organizers to reinforce the human body's parts, function, and organization.

Integumentary System Worksheet Quizlet

The cells in all of the layers except the stratum basale are called keratinocytes, which make up about 95% of all epidermal cells. This FREE science text will teach students about the hair, nails, skin, and oil and sweat glands. Layer of the epidermis superficial to the stratum spinosum. Deeper layer of the dermis; it has a reticulated appearance due to the presence of abundant collagen and elastin fibers. The epidermis provides protection, the dermis provides support and flexibility, and the hypodermis (fat layer) provides insulation and padding. "Thick skin" is found only on the palms of the hands and the soles of the feet. In addition, the papillary layer contains phagocytes, defensive cells that help fight bacteria or other infections that have breached the skin. A sudden drop in oxygenation can affect skin color, causing the skin to initially turn ashen (white).

In vitiligo, the melanocytes in certain areas lose their ability to produce melanin, possibly due to an autoimmune reaction. This activity has both pr. In many animals, there is a pattern of storing excess calories as fat to be used in times when food is not readily available. This ABC video follows the story of a pair of fraternal African-American twins, one of whom is albino. It does not have any blood vessels within it (i. e., it is avascular). Fat distribution changes as our bodies mature and age. The second page is a worksheet where students are asked to describe each system in three works, explain why it is important, and hypothesize about what would happen to the human body if that body system did not work. These cells are especially abundant on the surfaces of the hands and feet. The papillary layer is made of loose, areolar connective tissue, which means the collagen and elastin fibers of this layer form a loose mesh with abundant ground substance supporting the hydration of the skin. Everyday Connection – Lipid Storage. The stratum basale (also called the stratum germinativum) is the deepest epidermal layer and attaches the epidermis to the basal lamina, below which lie the layers of the dermis.