PPT-Cells and Tissues

Rough Endoplasmic Reticulum Nuclear Membrane Chromatin Peroxisome Lysosome Smooth Endoplasmic Reticulum Mitochondria Cell Membrane Golgi Apparatus Centrosome Centriole Nucleolus Ribosomes . Types of tissues:. TYPES OF TISSUES:. 1. Epithelial, nervous, muscle, connective. 2. Connective tissue: . . a. Contains few cells- spaced apart. . b. Defensive (type)- defends the body. ex. WBC. Lab 11. Plant Tissues. Tissues. A group of closely associated cells that perform related functions and are similar in structure.. Plant Tissues can classified into. :. Meristematic tissues . .. Permanent tissues.. Baseline (Flightpath D): . To be able to recognize examples of plant organs, state their functions and use a light microscope to view a cross-section of a leaf. State the functions of different plant tissues. Biology Department. Plant Tissues. Tissues can be classified into . :. Meristematic. tissues. . Permanent . tissues. I . . Meristematic. . tissues. They are usually called meristems. . They . are young tissues of the embryo or the mature plant which . Dr . Mahmood. S . Choudhery. , PhD. Assistant Professor. Advance Center of Research in Biomedical Sciences. Incharge. Tissue Engineering Laboratory, Mayo Hospital Lahore, Pakistan. King Edward Medical University, Lahore, Pakistan. Cells. In the late 1600’s British born Robert Hooke coined. the term "cell" to describe the basic unit of life.. Where did the term cell come from?. In 1665 Robert Hooke inspected thin slices of cork and found that they consisted of millions of small, “irregular units”. Cells. tissues . organs. . . organ systems organisms. Copy the words in . red and underlined. .. Cell Differentiation. Multicellular organisms (eukaryotic organisms like plant, animals, and fungi) have millions, billions, and trillions of cells.. Tissues. Biozone. p88 – 89. Biozone. p91 - 92. Lesson intentions:. Revise size relationships of structures.. Revise reasons for and functions of specialised cells.. Revise levels of organisation.. BIO 137: Anatomy & . Physiology . I. Tissues. Tissues are a group of cells with a common embryonic origin that function together to carry out specialized activities.. They include various types, . Study . Histology. Often called . Microscopic Anatomy. Greek word – . . Histos. = tissue. . Logia. =science/study. Cells work together in functionally related groups called tissues. 4 basic type of tissues:. Dr.Duran Kala. 4-. 2. Tissues and Histology. What is a Tissue?. A collection of similar cells and noncellular substances (extracellular matrix) secreted by the cells. Tissue Level of Organization. Epithelial . Fitua. Al-. Saedi. The . human . body is composed of four main types . of . tissues . :. . 1. . Epithelial . tissues . 2. . Connective . tissues. 3. Muscular . tissues. 4. . Nervous . tissues. A.  . . Tissues have two interacting components:. Cells .. . Extracellular matrix (ECM).which is consist of many kinds of macromolecules.. The (ECM) function :. Supports the cells and the fluids that transports nutrients to the cells .. complex.. Primary . structure of dicot stem, root and . leaf.. Secondary . thickening in dicot stem.. Unit - III . (Plant Anatomy). . Plants are stationary or fixed – they don’t move. Most of the tissues they have are supportive, which provides them with structural strength..