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GCE JAN 2007 : AS, 14 Understanding Human Physiology

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Centre Number 71 Candidate Number ADVANCED SUBSIDIARY (AS) General Certificate of Education 2007 Health and Social Care assessing Unit 14: Understanding Human Physiology A3H81 Assessment Unit AS 14 [A3H81] WEDNESDAY 31 JANUARY, MORNING TIME 2 hours. INSTRUCTIONS TO CANDIDATES Write your Centre Number and Candidate Number in the spaces provided at the top of this page. Write your answers in the spaces provided in this question paper. Answer all four questions. INFORMATION FOR CANDIDATES The total mark for this paper is 100. Quality of written communication will be assessed in questions 2, 3 and 4. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question or part question. For Examiner s use only Question Number 1 2 3 4 Total Marks A3H81W7 2728 Marks 1 (a) The diagrams below show four specialised human body cells. Write down the name and one function of each of the cells, A, B, C and D. A Name : _____________________________________________ Function : _____________________________________________ __________________________________________ [2] B Name : _____________________________________________ Function : _____________________________________________ __________________________________________ [2] C Name : _____________________________________________ Function : _____________________________________________ __________________________________________ [2] D Source: Physiology and Anatomy, Clancy and McVicar, Arnold 2002 Name : _____________________________________________ Function : _____________________________________________ __________________________________________ [2] A3H81W7 2728 2 Examiner Only Marks Remark (b) Stephen carried out an experiment to investigate how reaction time varied with age. He dropped a ruler between people s hands and measured how far the ruler dropped before they caught it. Examiner Only Marks Remark (i) Describe the nerve pathway involved when people react to the ruler dropping. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] (ii) He obtained the results shown below. distance dropped before caught (mm) 0 age (years) Explain what the graph shows about the relationship between reaction time and age. _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] A3H81W7 2728 3 [Turn over (iii) Explain the difference between a voluntary and a reflex action. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] A3H81W7 2728 4 Examiner Only Marks Remark 2 (a) This diagram shows a vertical section through part of the digestive system. Examiner Only Marks Remark A Arteriole HPV Venule Source: Physiology and Anatomy, Clancy and McVicar Arnold 2002 (i) Write down the name of tissue A. __________________________________________________ [1] (ii) Using the diagram, describe three ways the structure of the digestive system aids the absorption of food molecules. 1. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] 2. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] 3. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] A3H81W7 2728 5 [Turn over (b) The autonomic nervous system. Examiner Only Marks iris of the eye key: branch A branch B heart lung liver adrenal gland intestine bladder sphincter Source: AVCE Health and Social Care, Walsh et al. Collins 2000 (i) Write down the names of the two branches labelled A and B on the diagram. A ________________________________________________ [1] B ________________________________________________ [1] (ii) Using the diagram discuss how the autonomic nervous system functions. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ A3H81W7 2728 6 Remark Examiner Only _____________________________________________________ Marks Remark _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [9] A3H81W7 2728 7 [Turn over (c) The table below shows the effect of a range of body temperatures on the human body. Major physiological effects Thermoregulatory capabilities Temp. C Death Severely impaired High Impaired Systems normal Effective Impaired Severely impaired Lost Low Death Source: Physiology and Anatomy, Clancy and McVicar Arnold 2002 (i) Write down the range for normal body temperature. __________________________________________________ [2] (ii) Discuss the effects of abnormal body temperatures on individuals. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ A3H81W7 2728 8 Examiner Only Marks Remark Examiner Only _____________________________________________________ Marks Remark _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [9] A3H81W7 2728 9 [Turn over 3 (a) This is a diagram of the ear and brain. Examiner Only Marks C A B Source: CCEA, Biology for GCSE (i) Describe how sound is transmitted to the inner ear. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [6] (ii) Write down the name of the nerve labelled B on the diagram. __________________________________________________ [1] A3H81W7 2728 10 Remark (iii) Describe how sound is transmitted along nerve B to the brain. Examiner Only Marks Remark _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] (iv) Write down the name and describe the function of the part labelled A. Name: ____________________________________________ [1] Function: _____________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] (v) Write down the name of the part labelled C. _____________________________________________________ __________________________________________________ [1] (vi) Describe one function of the part labelled C. _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] A3H81W7 2728 11 [Turn over (b) Jaideep, aged six, has a conductive hearing loss. (i) Write down two causes of this type of hearing loss. 1. ___________________________________________________ __________________________________________________ [1] 2. ___________________________________________________ __________________________________________________ [1] (ii) Analyse the possible impact of this kind of hearing loss on Jaideep s lifestyle and development. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ A3H81W7 2728 12 Examiner Only Marks Remark Examiner Only _____________________________________________________ Marks Remark _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [9] A3H81W7 2728 13 [Turn over 4 (a) This is a diagram of the structure of a NEPHRON in the kidney. Examiner Only Marks A B D C Source: Human Health and Disease, A. Fullick, Heineman, 1998 (i) Write down the name of each part labelled A D and explain its role in filtering blood. A Name : __________________________________________ [1] Role : _____________________________________________ _____________________________________________ _____________________________________________ __________________________________________ [2] B Name : __________________________________________ [1] Role : _____________________________________________ _____________________________________________ _____________________________________________ __________________________________________ [2] A3H81W7 2728 14 Remark Examiner Only C Name : __________________________________________ [1] Marks Remark Role : _____________________________________________ _____________________________________________ _____________________________________________ __________________________________________ [2] D Name : __________________________________________ [1] Role : _____________________________________________ _____________________________________________ _____________________________________________ __________________________________________ [2] (ii) Explain how the nervous and endocrine systems interact to control water levels in the body. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ A3H81W7 2728 15 [Turn over Examiner Only _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [6] (iii) Write down two ways endocrine glands differ from other glands in the body. 1. ___________________________________________________ __________________________________________________ [1] 2. ___________________________________________________ __________________________________________________ [1] A3H81W7 2728 16 Marks Remark Percentage of function remaining (b) Using the graph below analyse how kidney function varies with age. Examiner Only Marks Remark 100 90 80 70 60 50 40 30 20 Kidney filtration rate 0 30 40 50 60 70 Age/years 80 90 Source: Human Health and Disease, A. Fullick, Heineman, 1998 _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ A3H81W7 2728 17 [Turn over Examiner Only _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ ______________________________________________________ [9] A3H81W7 2728 18 Marks Remark THIS IS THE END OF THE QUESTION PAPER A3H81W7 2728 19 Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright holders may have been unsuccessful and CCEA will be happy to rectify any omissions of acknowledgement in future if notified. SP (NF/CGW) T27798/3

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Additional Info : Gce Health and Social Care January 2007 Assessment Unit AS 14 Unit 14: Understanding Human Physiology
Tags : General Certificate of Education, A Level and AS Level, uk, council for the curriculum examinations and assessment, gce exam papers, gce a level and as level exam papers , gce past questions and answer, gce past question papers, ccea gce past papers, gce ccea past papers

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