hair are composed of the protein keratin‚ the same hard protein material that feels the cells of the epidermis. The process of hair formulation is much like the process of growth in the epidermal layer of the skin. 2.Epidermis-Is composed of the stratified squamous epithelium. This type of epithelial tissue consists of flat scale-like cells arranged in overlapping layers or strata. The epidermis does not have a blood supply or any connective tissue so it is dependent for nourishment on the deeper
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The role of the skin in maintenance of homeostasis The skin is the single largest organ that covers the entire surface of our body and consists of two layers mainly the epidermis and the dermis. Also beneath the dermis is the subcutaneous layer which is not part of the skin but separates the integument from muscles and bones‚ which will be included in the essay as tissue fibres are connected with those of the dermis. The main functions of the skin are protection of the tissues and organs that lie
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Sebaceous(oil) gland|9 Epidermis| 4 Hair follicle|10 Subpapillary vascular plexus| 5 Eccrine sweat gland|11 Dermal papillae| 6 Hair follicle receptor(root hair plexus)|12 Pore| QUESTIONS: A. How does the skin tan when exposed to ultraviolet light? When exposed to the sun’s UV rays‚ your skin’s melanocytes produce melanin‚ the dark pigment that creates a tan. A tan is your skin’s attempt to prevent UV rays from doing any further damage to the sensitive skin cells in your epidermis.
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between the epidermis and the subcutaneous tissues. It consists of a variable type of fibrous connective tissue which cushions the body from stress and strain. Also‚ the dermis provides tensile strength and elasticity to the skin through its dermal fibres (collagen‚ reticular‚ and elastic fibres) that are embedded in an extrafibrillar matrix [72‚ 73]. The dermis is approximately 15 to 40 times thicker than the epidermis and can be further divided into a superficial part adjacent to the epidermis‚ the papillary
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Ridge ending * The enclosed ridge event is a spur * Island ridge * Pores * Ridge ending * Bifurcation * Ridge ending ("Fingerprint analysis-The Basics”) Part 2 The skin is an organ composed of three anatomical layers: epidermis‚ dermis‚ and hypodermis. These anatomical layers together function to provide the body with a protective barrier‚ body temperature regulation‚ sensation‚ excretion‚ the outer layer of skin
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Skin: From growth to the Healing Process In this paper I am going to discuss many different topics related to our skin. When discussing the skin. a good place to start is the different layers of the skin. The skin has three different layers: the epidermis‚ the dermis and the subcutaneous
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skin are epidermis and dermis. 7. The outer layer is called the epidermis and is composed of stratified squamous epithelium. 8. The inner layer is called the dermis and is made up of connective‚ epithelial‚ muscle‚ nervous‚ and blood tissue. 9. A basement membrane separates the two skin layers. 10. The subcutaneous layer is beneath the dermis. 11. The subcutaneous layer is composed of loose connective tissues and adipose tissue. B. Epidermis 1. The epidermis lacks blood
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Skeletal‚ Muscular‚ and Integumentary System The Muscular System Our muscular system provides the main source of force to put our bodies into motion. More than 40% of our body mass is composed of muscle. Types of Muscular Tissue There are three types of muscle tissue: 1. Skeletal Voluntary movement‚ attached to bones. 2. Smooth Involuntary movement‚ found in digestive tract‚ circulatory system‚ etc. 3. Cardiac Involuntary movement‚ found only in heart. Muscle Contraction Skeletal Muscle
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mitosis). 2.1 Identify the tissue. The tissue is a vascular cambium. 4.5 (?) Is the epidermis uniseriate or multiseriate? In the cross section of a young root of Helianthus‚ the epidermis is uniseriate. 6.1 What do you call the outgrowths of the epidermis? These are called trichomes. 6.2 What is their function? They function mainly for support and protection of the leaf or stem which contains the epidermis. 6.3 Classify the types of epidermal outgrowths in the above plants. bristle | scale
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Anatomy of Flowering Plants Tissues A tissue is a group of cells having a common origin and usually performing a common function. Based on cell’s capability to divide‚ tissues are classified into two main groups which are as follows: 1. Meristematic and 2. Permanent tissues. Meristematic Tissues: Cells in the meristematic tissue are capable of dividing. Meristematic tissues are found in those regions which need to grow continuously. For example‚ root tips and stem tips contain meristematic
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