WAHEB
WEST AFRICA HEALTH EXAMINATION BOARD
ENVIRONMENTAL HEALTH TECHNICIAN PAST QUESTIONS COMPILATION Fully Updated Test Questions Actual/Official Practice Questions
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WAH.2019
WAH/14/19/06
WEST AFRICA HEALTH EXAMINATIONS BOARD
2019 NATIONAL DIPLOMA (ND) EXAMINATION IN ENVIRONMENTAL HEALTH TECHNOLOGY
EHT 213 – INTRODUCTION TO IMMUNOLOGY Date: Friday 14th June, 2019, Time Allowed: 2½ Hours Time: 9:00am - 11:30am NOTE CAREFULLY THE INSTRUCTIONS ON THE FRONT COVER OF YOUR ANSWER BOOKLET
ANSWER ALL QUESTIONS
1.
2.
3.
a. Explain the term innate immunity.
(5 marks)
b. List five (5) chemical host defense factors in man
(5 marks)
c. Explain two (2) role of blood in immunity.
(10 marks)
a. with the aid of a well labeled diagram, explain the structure of antibody (15 marks) b. State five (5) functions of an Immunoglobulin
(5 marks)
a. Explain cold chain system.
(5 marks)
b. List five (5) non-human elements of the cold chain system in your country (5 marks)
4.
5.
c. Explain five (5) constraints of the cold chain system in your country
(10 marks)
a. Define the term “Antiserum"
(5 marks)
b. Explain the process of preparing a Toxoid Vaccine
(10 marks)
c. State the five (5) methods by which Bacteria causes diseases in man.
(5 marks)
Write note on the followings a. Lymphocytes
(5 marks)
b. Auto-Immunity.
(5 marks)
c. Lymph Nodes
(5 marks)
d. Acquired Immunity
(5 marks)
West Africa Health Examination Board WAHEB Past Questions WAHEB List of Examinations. June Examinations. Higher National Diploma (Public Health Nursing). Higher National Diploma (Environmental Health Technologist). National Diploma (Environmental Health Technologist). Release Of Results. Results are released in November. October Examinations. Diploma (Environmental Health Technician). Certificate (Environmental Health Assistant). Release Of Results. Results are released in March. November Examinations. Diploma (Health Education & Promotion). Diploma (Food Hygiene). Certificate (Food Hygiene). Release Of Results. Results are released in March.
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