2 Lesson Objectives1. Define: Cell, Tissue, organ, and organ system (DK). 2. Describe two types of tissue (DK) 3. Describe two types of organs (DK) 4. Create a flow chart illustrating relationship between cells, tissues, organs, systems and organisms (PK)
3 Levels of Organization Cell—Basic unit of structure and function in organisms.Some organisms, like bacteria and protists, are unicellular (made entirely of one cell).Some organisms, like fungi, plants, and animals, are multicellular (made of many cells).In multicellular organisms, cells exhibit cell specialisation. They take on specific jobs and look different from each other.The cells also exhibit division of labor. They split up the work of the organism.
5 Levels of Organization Tissues—Groups of similar cells that work together to perform a specific function.4 major tissue types in animalsEpithelial tissueConnective tissueMuscle tissueNervous tissue
6 Levels of Organization Organs—structures made of different types of tissues that work together to perform a specific function.ExamplesHeartLungsStomachSmall intestineLiverLarge IntestineGall BladderPlant RootsPlant StemsPlant Leaves
7 Levels of Organization Organ Systems—Groups of organs that work together to perform a specific function.Examples:Digestive systemCirculatory systemRespiratory systemNervous systemMuscular systemSkeletal systemIntegumentary system (skin)Vascular system in plants
8 Levels of Organization Organism—A complete, individual living thing.Examples:A single personA single plantA single bacteriumA single protist
10 Write your answers in complete sentences Q 1: A (tissue, organ, system) is a group of the same kinds of cells that work together. Choose the right answer. system organ tissue Q 2: Some tissues and organs work together like the members of the team. The parts that work together are called a _____________. cell system group Q 3: The mouth, teeth, tongue, stomach and intestines all work together. Therefore they are called the important parts of __________________. digestive system circulatory system muscular system Q 4: Brain, heart and lungs are some of the important _______________ in a body. organs tissues cells system Q 5: Different tissues work together to form _________ . cells system organs Q 6: Different systems work together to form organs. True or false? false true
11 Organization of Vertebrate Body Tissues are groups of cells that are similar in structure and function In humans, there are four primary tissues: -Epithelial, connective, muscle and nerve11
12 Organization of Vertebrate Body Organs are combinations of different tissues that form a structural and functional unit Organ systems are groups of organs that cooperate to perform the major activities of the body -The human body contains 11 principal organ systems12
13 Organ SystemsThe five main organ systems that we will be focusing on in this unit are:The Respiratory SystemThe Circulatory SystemThe Reproductive SystemThe Digestive SystemThe Excretory System
15 Digestive SystemThe organs or parts of the body that work together to break down food into a smaller, more useable form.NO Thank you!15
16 Circulatory SystemThe system that carries oxygen and nutrients to all cells in the body and takes wastes away from the cells; it consists of the heart, blood vessels and blood.NO Thank you!16
17 Respiratory SystemThe system involved in the inhalation of and diffusion of oxygen into the blood stream, and the removal of carbon dioxide from the body via exhalationNOThank you!17
18 Excretory SystemThe system responsible for the removal of excess water and waste from cell reactions in the body
19 Reproductive SystemThe male and female reproductive systems are responsible for the production of sperm and ova (eggs), the fertilisation of ova by sperm, and the gestation of a fertilised ova into a foetus (unborn baby)
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