Epithelial tissue Covers the body surface and forms the lining for most internal cavities. The major function of epithelial tissue includes protection‚ secretion‚ absorption‚ and filtration. The skin is an organ made up of epithelial tissue which protects the body from dirt‚ dust‚ bacteria and other microbes that may be harmful. Epithelial tissue covers the whole surface of the body. It is made up of cells closely packed and ranged in one or more layers. This tissue is specialised to form the
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SCI250 Week 5 Chapter 19 Integumentary System Quiz – Test Bank Section: Multiple Choice 1. The majority of the microorganisms on the surface of the human skin are ________ Gram-positive bacteria. Gram-negative bacteria. approximately equal numbers of Gram-positive and Gram-negative bacteria. Spore-forming bacteria. Enteric. 2. The outer layer of the skin is the _________ while the deeper layer is the _________ cutaneous‚ keratin. dermis‚ sebum. mucous‚ epidermis. epidermis‚ dermis. sebum‚ keratin
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Chapter 4: TISSUES AND MEMBRANES Outline of Notes I. Introduction. A. General: Cells are highly specialized and interdependent on one another. Groups of similar cells performing similar functions are called Tissues The study of tissues is called Histology. Organs are made of tissues. A detailed understanding of tissues will greatly help your understanding of organs and organ systems later in this course. Tissues are classified into 4 main types: Epithelial‚ Connective‚ Muscular
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There are four types of tissue found in animals: connective‚ muscle‚ nervous‚ and epithelial. We are going to go into muscle tissue. The cells of muscle tissues are called fibers. There are three types of muscle tissue and they are skeletal‚ cardiac‚ and smooth. All types can go though hypertrophy (enlargement or overgrowth of an organ or part of the body due to the increased size of the constituent cells). Muscle fibers contract due to the interaction of the contractile proteins‚ actin and myosin
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The integumentary system serves as protection for the body. While its goal is to avoid damage‚ diseases of the skin do occur. Diseases of the integumentary system vary from skin cancer to acne to warts. Warts‚ however‚ are small tumors that are caused by the human papilloma virus (HPV). The type of wart depends on the type of HPV. Overproduction of the keratin protein leads to verruca plantaris‚ better known as plantar warts. They are rough‚ hard growths that appear on the sole of the foot. Typically
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PLANT TISSUES (pp 261-268) HOW ARE CELLS ORGANIZED IN PLANTS? I. MERISTEMATIC TISSUES A. APICAL MERISTEMS Primary Growth 1. Initials a. Occur near tips of roots and shoots b. Cells have thin walls‚ prominent nuclei‚ and small vacuoles c. Functions 1) Establish patterns of growth. • Leaf pattern. 2) Produce new‚ genetically healthy cells 3) Produce derivatives which in turn account for primary growth i.e. elongation. 2. Derivatives a. Protoderm - becomes
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Section 6 Types of Tissue OBJECTIVES: Upon completing this section‚ you will be able to: 1. Define the word histology. 2. Name and briefly describe the four basic types of tissue. 3. Name the three subtypes of simple epithelial tissue. 4. List the five main subtypes of connective tissue. 5. Name the three subtypes of muscle tissue. 6. Name the two types of nerve tissue. 68 Section 6 Types of Tissue HISTOLOGY Histology is the microscopic study of cells‚ tissues‚ and organs. Also called
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Histology This lab focused on the examination and identification of tissues that make up the organs of the body. The tissues are divided into four main categories: epithelial‚ connective‚ muscle‚ and neuronal. Click on the thumbnail images to see a larger version. All of the photomicrographs were taken using the 40X objective (400X magnification)‚ which is the highest magnification we use in this lab. Other resources include linked web pages on the "Resources" page and the histology tutorial
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QUILONA‚ KLARISSE JANE A. BSP-1B Animal Tissues 1. Epithelial Epithelial tissue is made of closely-packed cells arranged in flat sheets. Epithelia form the surface of the skin‚ line the various cavities and tubes of the body‚ and cover the internal organs. Subsets of Epithelia Epithelia that form the interface between the internal and external environments. Skin as well as the lining of the mouth and nasal cavity. These are derived from ectoderm. Inner lining of the GI tract‚ lungs‚ urinary
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Muscle Tissue Introduction * Motion * Results from alternating contraction (shortening) and relaxation of muscles * Skeletal system * Provides leverage and a supportive framework for this movement * Myology – study of muscles Muscle Tissue * Alternating contraction and relaxation of cells * Chemical energy changed into mechanical energy Types of Muscle Tissue * Skeletal muscle – primarily attached to bones * Striated and voluntary * Cardiac
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