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* Read the paragraph and answer the following questions.Dermal tissue usually consists of asingle layer of tissues showingvariations in the types of cells. On thebasis of their location and functiondermal tissues are studied as threedifferent types epidermis (outer layer),mesodermis (middle layer) andendodermis (inner most layer) Smallpores are seen in the epidermis of theleaf called stomata. Cells of the rootshave long hair like parts, called roothairs. Gum is secreted from the dermallayer of gum tree |
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Answer» 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. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue (Figure 5.1.1). The most superficial layer of the skin is the epidermis which is attached to the DEEPER dermis. Accessory structures, hair, glands, and nails, are found associated with the skin. The deeper layer of skin is well vascularized (has NUMEROUS blood vessels) and is superficial to the hypodermics. It also has numerous sensory, and autonomic and sympathetic nerve fibers ensuring communication to and from the brain. |
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