They appear to be sloughing off. Type of structural protein that gives skin, hair, and nails its hard, water-resistant properties. This activity is perfect for review and can also be used as a study guide. The video and worksheet cover the following system: The integumentary system specifically the topic of our skin. Cosmetic procedures, such as microdermabrasion, help remove some of the dry, upper layer and aim to keep the skin looking "fresh" and healthy. Everyday Connection – Lipid Storage. Integumentary system worksheet answers pdf 1. Collagen fibers provide structure and tensile strength, with strands of collagen extending into both the papillary layer and the hypodermis. Other changes in the appearance of skin coloration can be indicative of diseases associated with other body systems. Describe the role of keratinocytes and their life cycle. This worksheet includes 10 questions for students to follow along with the Operation Ouch Video on the integumentary system found on Youtube. You can expand it or make it of UseAll rights reserved by Humerus TeacherThis product is intended for use by the original purchaser only. The reticular layer appears reticulated (net-like) due to a tight meshwork of fibers.
As the name suggests, the stratum spinosum is spiny in appearance due to the protruding cell processes that join the cells via a structure called a desmosome. Cell that produces keratin and is the most predominant type of cell found in the epidermis. Cells in this layer are shed periodically and are replaced by cells pushed up from the stratum granulosum (or stratum lucidum in the case of the palms and soles of feet). Adipose tissue present in the hypodermis consists of fat-storing cells called adipocytes. The skin is composed of two major layers: a superficial epidermis and a deeper dermis. Integumentary system worksheet answers pdf slope. Respiratory System8. Students will learn about the parts and functions of the integumentary system.
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. Directions: Answer the following questions about the eleven (11) human body systems that we have discussed. Intercellular vesicle that transfers melanin from melanocytes into keratinocytes of the epidermis. This introduction activity will engage kids into thinking through their prior knowledge about Human Anatomy. Link] If you zoom on the cells of the stratum spinosum, what is distinctive about them? This activity has both pr. Specialized dendritic cell found in the stratum spinosum that functions as a macrophage. Receptor cell in the stratum basale of the epidermis that responds to the sense of touch. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The entire layer is replaced during a period of about 4 weeks. 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. A basal cell is a cuboidal-shaped stem cell that is a precursor of the keratinocytes of the epidermis. The color of skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin.
It is interesting to note that the "spiny" nature of this layer is an artifact of the staining process. Outermost tissue layer of the skin. Learning Objectives. Interactive Link Questions. These cells are especially abundant on the surfaces of the hands and feet.
Tumors of the pituitary gland can result in the secretion of large amounts of melanocyte-stimulating hormone (MSH), which results in a darkening of the skin. 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. Most of the skin can be classified as thin skin. Skin and its accessory structures. The desmosomes interlock with each other and strengthen the bond between the cells. It requires about 10 days after initial sun exposure for melanin synthesis to peak, which is why pale-skinned individuals tend to suffer sunburns of the epidermis initially. The stratum granulosum has a grainy appearance due to further changes to the keratinocytes as they are pushed from the stratum spinosum. These puzzles cover an entire year of a high school Anatomy class and can also be used in a Biology class. The epidermis is avascular and cells of this layer must get their oxygen and nutrients from capillaries in the dermis.
Schaum's Outline of Human Anatomy and Physiology, 4th Edition. Layer of the epidermis superficial to the stratum basale, characterized by the presence of desmosomes. The deeper layer of skin is well vascularized (has numerous blood vessels) and is superficial to the hypodermics. Link] These cells do not have nuclei, so you can deduce that they are dead. The full video is 45 minutes long. This leads to a loss of color in patches (Figure 5. The accumulation of melanin in keratinocytes results in the darkening of the skin, or a tan. Exposure to the UV rays of the sun or a tanning salon causes melanin to be manufactured and built up in keratinocytes, as sun exposure stimulates keratinocytes to secrete chemicals that stimulate melanocytes. Structure that forms an impermeable junction between cells. Pigment that determines the color of hair and skin.
It is not strictly a part of the skin, although the border between the hypodermis and dermis can be difficult to distinguish. The keratinocytes in these layers are mostly dead and flattened. Individuals with albinism tend to appear white or very pale due to the lack of melanin in their skin and hair. In addition, students will learn how each part helps the human body. Unstained epidermis samples do not exhibit this characteristic appearance. Clear protein-bound lipid found in the stratum lucidum that is derived from keratohyalin and helps to prevent water loss. There are 13 words total. The keratinocytes that compose the stratum lucidum are dead and flattened (see Figure 5. Type of stem cell found in the stratum basale and in the hair matrix that continually undergoes cell division, producing the keratinocytes of the epidermis. In addition, collagen binds water to keep the skin hydrated. On this worksheet, they will try to draw the listed body parts onto the outline of the human Shirley's Anatomy and Physiology Curriculum:Anatomy Scope and Sequence FREEBIEUnit 0: First Week/ Class ProceduresIntroduction to Anatomy First Day Assignment (Need to Update)Student QuestionnaireSyllabus Template and Example (Need to Update)Unit 1: Introduction to Anatomy & Physiolo.
Check out the unit and save 20% by clicking here. This product includes 10 different crossword puzzles and their answer keys. In addition, the papillary layer contains phagocytes, defensive cells that help fight bacteria or other infections that have breached the skin. What are the basic functions of each of these layers? As new keratinocytes are produced atop the stratum basale, the keratinocytes of the stratum spinosum are pushed into the stratum granulosum. What determines the color of skin, and what is the process that darkens skin when it is exposed to UV light? Puzzles included in this product: Anatomical Terms Unit Puzzle. Dermal papillae push up on the epidermis creating unique epidermal ridge patterns. The melanin is transferred into the keratinocytes via a cellular vesicle called a melanosome (Figure 5. All of the keratinocytes are produced from this single layer of cells, which are constantly going through mitosis to produce new cells. Describe the layers of the epidermis and dermis. I made several copies of the descriptions and images o.
In contrast, too much melanin can interfere with the production of vitamin D, an important nutrient involved in calcium absorption. Eumelanin exists as black and brown, whereas pheomelanin provides a red color. The cells (three to five layers deep) become flatter, their cell membranes thicken, and they generate large amounts of the proteins keratin, which is fibrous, and keratohyalin, which accumulates as lamellar granules within the cells (see Figure 5. This Crossword Puzzle Set of 10 package is great for vocabulary building and is used at the end of each one of my units as a post test activity. With a prolonged reduction in oxygen levels, dark red deoxyhemoglobin becomes dominant in the blood, making the skin appear blue, a condition referred to as cyanosis (kyanos is the Greek word for "blue"). Although periodic accumulation of excess fat may have provided an evolutionary advantage to our ancestors, who experienced unpredictable bouts of famine, it is now becoming chronic and considered a major health threat.
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