Unit 1- The organisation of the human body. Biology 3º ESO
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Unit 1- The organisation of the human body. Biology 3º ESO






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Unit 1- The organisation of the human body. Biology 3º ESO Unit 1- The organisation of the human body. Biology 3º ESO Presentation Transcript

  • The human body organization
  • What is the difference between living and non living things?
  • All living things carry out 3 functions Nutrition Interaction Reproduction
  • What are the levels of organization of matter? 1. 2. 3. 4. 5. 6. 7. 8. Subatomic level Atomic level Molecular level Cellular level Tissue level Organ level System and apparatus level Organism level
  •  What is a cell?  The cell is the functional basic unit of life which carries out the 3 vital functions:  Nutrition  Interaction  Reproduction  Are all the living things made up of cells?
  • THE CELL All living things are made up of one or more cells
  • You started as one cell, then 2, 4….. How many cells do you think you have now?
  • S XVII Robert Hooke
  •   Hooke observed cork layers. His microscope had 50 magnifications (aumentos)
  • Anton Van Leeuwenhoek
  • What types of cells do you know? PROKARYOTIC CELLS  EUKARYOTIC CELLS  Animal cells  Plant cells   What is the main difference between Prokaryotic and Eukaryotic cells?
  • Parts of a Eukaryotic animal cell
  • The 3 main parts:  Plasmatic or cell membrane. Covers the cell. Controls what goes in and out of the cell.  Cytoplasm. It houses all the organelles. It´s a jelly-like substance.  Nucleus. Contains the genetic information, controls the activity of the cells.
  • Points of the cellular theory       XIX century. Authors: Matthias Schleiden (botanist) and Theodor Schwann (zoologist) All living things are made up of cells. The cell is the functional and structural unit of all living things All cells come from pre-existing cells by division Cells contain hereditary information which is passed from cell to cell during cell division.
  •  Animations cells, levels of organization http://lgfl.skoool.co.uk/content/keystage3/biology /pc/learningsteps/CAFLC/launch.html  http://lgfl.skoool.co.uk/content/keystage3/biology /pc/learningsteps/OLTLC/launch.html   Video cell´s discovery  Video introduction to cells
  • Plasmatic or cell membrane    Covers the cell Protects it Controls what goes in and what goes out of the cell.
  • The cell membrane is made up of two types of molecules: proteins and lipids
  • What else can we find in a cell?
  • Parts of a Eukaryotic animal cell
  •        The cytoplasm It is a jelly-like substance inside the cell. It contains organelles. And proteins that form the cytoskeleton. The nucleus It is surrounded by a nuclear membrane. It contains the DNA, the genetic material. It controls all the cell function´s.
  • The main organelles are: Mithocondria  Endoplasmic reticulum (rough and smooth)  Golgi body  Centrioles  Vacuoles  Ribosomes  Lysosomes  Cytoskeleton 
  • Proteínas y lípidos
  • Es un centro de empaquetamiento responsable del transporte seguro de los compuestos sintetizados hacia el exterior de la célula.
  • Centrosoma: centriolos
  •  http://www.neok12.com Quiz repaso células y orgánulos.
  • Vídeo resumen sobre tejidos
  • TISSUE LEVEL  What is a tissue?  What types of tissue can we find in our body?
  • Which are the 4 types of tissue? 1. 2. 3. 4. Epithelial tissue Connective tissue Muscle tissue Nerve or nervous tissue
  • Epithelial tissue. Two types  Covering epithelial tissue.  Glandular epithelium..
  • 1- Covering EPITHELIAL TISSUE Your skin is composed of epithelial tissue, and epithelial tissue also lines your body cavities and major organs.
  • 1.1-Covering epithelial tissue. Where can we find it?  Epidermis. The outer layer of the skin.  Mucosae. Covering the pharynx, mouth, esophagus, respiratory tract…  Covering the inside part of the blood vessels.
  • 1.2- GLANDULAR EPITHELIUM  It´s the tissue that forms the glands  What are glands? Do you know any examples?  Glands secrete substances  There are 3 types of glands:  Exocrine glands  Endocrine glands  Mixed glands
  • 1-Exocrine glands Salivary glands  Sweat glands  Lacrimal glands  Liver 
  •  2-Endocrine glands Secretion of substances that are internally used by the body, e.g hormones. -Hormones travel through the blood.
  • HORMONES Adrenaline is secreted by the suprarrenal glands.  Strong emotions such as fear or anger cause it to be released into the bloodstream.  It causes an increase in heart rate, muscle strength, blood pressure, and sugar metabolism.  
  • 3- Mixed glands   They can work both as endocrine or exocrine glands. Example: Pancreas  As endocrine gland it produces:   INSULINE As exocrine gland it produces:  PANCREATIC JUICE
  •  3- Mixed glands
  • 2- CONNECTIVE TISSUE It supports the body and connects together all types of tissue. 2.1- Conjunctive tissue  Tendons (join the muscles to the bones)  Ligaments
  • 2.2Addipose tissue  Why is it neccesary?
  • 2.2- Addipose tissue It stores fat, protects organs and provides termic isolation
  • 2.3- Cartilage tissue
  • Cartilage tissue    Ears Trachea Nose
  • 2.4- Bone tissue The major structural and supportive connective tissue of the body
  • 2.5 Blood tissue  Blood components?
  • 2.5- Blood tissue It consists of blood plasma, and cell elements, blood cells.
  • 3- MUSCLE TISSUE  Muscles can be divided into three main groups according to their structure, e.g.:  Smooth muscle tissue. ( Tejido muscular liso)  Skeletal muscle tissue. (Tejido muscular estriado)  Cardiac (heart) muscle tissue. (Tejido muscular cardíaco)
  • Where can we find?  Smooth muscle tissue.  Dygestive walls.  Skeletal muscle tissue:  Skeletal  tube wall, blood vessel muscles (they move bones) Cardiac muscle tissue:  Heart
  • There are microfilaments composed of actin and myosin, which are contractile proteins.
  • 4- NERVOUS TISSUE It detects stimuli, integrates information and elaborates responses
  • Neurons
  •  A neuron consists of two major parts: 1. Cell Body. It contains the neuron's nucleus, associated cytoplasm, and other organelles. 2. "finger-like" projections from the cell body that are able to conduct and transmit signals. There are two types:   Axons - carry signals away from the cell body. Dendrites - typically carry signals towards the cell body.
  •  Quiz types of tissues www.neok12.com
  • What is an organ? Different tissuess form organs
  •  Go to PPT Systems
  • Vídeo Function of the different organ systems Video cells, organelles http://www.youtube.com/watch? v=o1GQyciJaTA 