Only write down the LETTER 5 181 182 183 184 185 Fat layer around the heart Rib

Only write down the letter 5 181 182 183 184 185 fat

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Only write down the LETTER. (5) 1.8.1 1.8.2 1.8.3 1.8.4 1.8.5 Fat layer around the heart Rib cartilage Shaft of a long bone (femur or tibia) Tissue on which epithelia usually rest Larynx
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Study unit 5 67 A B Connect muscle to bone C Connect bone to bone D E F G H I Key Macro phage (defend body agianst infection) Fat cell (synthesise and stores fat) Fibro blast (make elastic fibres) White Non- elastic fibre (thick, collagen, //, unbranched) Yellow Elastic fibre ( thin, branched elastin) Mast cell (Histamin secretion and heparin = anti coagulant Jelly like matrix ) Collagen non- elastic fibre Elongated Fibroblast (make elastic fibres) Reduced Matrix Thick Yellow Elastic fibre FIGURE 5.4: DIAGRAMS REPRESENTING DIFFERENT CONNECTIVE TISSUES 2. Describe how blood coagulation occurs. (10) 3. Study the figure 5.5 representing blood tissue: 3.1 Identify the different blood cells indicated by A to E in figure 5.5. (5) A B C D E FIGURE 5.5: BLOOD COMPONENTS cement line
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Study unit 5 68 3.2 White blood cells are classified as granulocytes (3 types) and agranulocytes (2 types). 3.2.1 Which of B, D or E are granulocytes and which are agranulocytes? Explain. (6) 3.2.2 What are the functions of A to E respectively? (10) Control your answers using the listed sources. Report any problems that you experience at the contact sessions. Practical/ Microscope work 9 Study available microscope slides and bio-viewer slides of bone, hyaline, fibrous and elastic cartilage, normal blood, abnormal blood (such as sickle cell anaemia), blood parasites (malaria and sleeping disease). Record your observations in writing and using labelled drawings. Keep this activity in your practical portfolio.
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Study unit 5 69 5.3 MUSCULAR TISSUE Sources Prescribed sources: Appendix 3 Introductory remarks Muscle tissue is specialized to cause movement of the body. This movement is caused by the ability of muscle cells to contract- they therefore need to be long and narrow. As a result of the length of these muscular cells, the cells are known as muscle fibres. (The term muscle fibres should not be confused with the fibres found in the connective tissue). Three types of muscles are found, namely skeletal, voluntary or striated muscle, smooth muscle and cardiac muscle. The names relate to their functions or appearance: Skeletal (contraction moves the skeleton), voluntary, (under the control of the will or volition); striated (fibres display alternating dark and light bands, giving muscles a ‘cross - striped’ appearance). Cardiac muscle forms the largest part of the heart, the myocardium. Cardiac muscle fibres are striated, but, since it is not under the control of the will, it is involuntary. Smooth muscles display no ‘striations' and are involuntary. Muscle fibres contract when they are stimulated by the neurons of the nervous system. Nervous tissue is the last of the four groups of tissue discussed in this study unit.
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Study unit 5 70 Study hint: One of the best ways to study tissues is by means of a comparative study. Make use of a table.
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  • Spring '16
  • Ambani Mudau
  • Phylum, Windelspecht

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