Human Biology (MLTS2101)
BSc, Biochemistry - BCHS
Semester: First Semester
Level: 200
Year: 2016
REPUBLIC OF CAMEROON REPUBLIQUE DU CAMEROUN
Peace-Work-Fatherland Paix-Travail-Patrie
The university of Bamenda Université de Bamenda
Department of Biological Sciences Départment des Sciences Biologiques
Title: Human Biology Code: MLTS2201 1
st
semester level 1 course
Date: February 2016 Time: 2:30hours
Lecturers: Mr. KADA/ Mr. OUMAR
Section one: 17 marks
1. Describe how exocrine glands are classified according to their mode of secretion and give one example in
each case (3, 7.5marks)
2. Cite and give the function of the different cells of the epidermis. (3 marks)
3. What is the role of the sebaceous glands of the skin? (2 marks)
4. Explain the different functions of blood. (3 marks)
5. Describe the mechanism of growth in length of bones and give the influence of sexual hormones on it, (5, 25
marks)
Section two: true or false. (Answer by writing down the number and the letter corresponding to the correct
answer). (0.5 x12 = 6 marks)
Note: a. True b. False.
1. The central nervous system is made up of the cerebrum, cerebellum, brain stem, and spinal cord.
2. The cerebrum is part of the spinal cord
3. The cerebellum is also called the “higher brain”
4. The brain stem stores all of our memories
5. Injury to the brain may cause personality change
6. Our senses are not part of the peripheral nervous system
7. Neurons look exactly like other body cells
8. Nerve agents affect people in many different ways.
9. Damage to the nervous system is always the result of injury
10. PNS stands for “peripheral nervous system”
11. The cerebellum helps to control our muscles and our balance.
12. Reflex actions happen slower than other types of reactions.
Section Three: Multiple Choices. (Answer by writing down the number and the letter corresponding to the
correct answer(s), for example; 1-b). Note- Correct answer; 0.5: wrong answer: -0.25; No answer: 0
1. Which of the following is not found in the central nervous system?
A. Cerebrum
B. Brain stem
C. Spinal cord
D. Sensory neurons
2. Why are brain stem injuries so serious?
A. The brain stem stores your memories
B. The brain stem controls your breathing
C. The brain stem gives you personality
D. Brain stem injuries are extremely painful
3. How do the peripheral nervous system and the central nervous system differ?
A. only the PNS is made up of neurons
B. The CNS receives sensory information from the outside world; the PNS does not.
C. the PNS stores our memories, the CNS does not
D. the PNS receives sensory information from the outside world; the CNS interprets that information.
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4. Which system are the nerves in your fingers a part of?
A. CNS
B. PNS
C. Immune system
D. None
5. The peripheral nervous system allows you to:
A. Taste
B. Touch
C. Smell
D. All of the above
6. Which of the following has nerves that are part of the PNS?
A. Brain
B. Spinal cord
C. Skin
D. Cerebellum
7. How does a reflex reaction differ from other types of reaction?
A. Reflexes are not responded to by our brain, only our spinal cord.
B. Reflex reactions are carefully thought in our cerebrum.
C. The spinal cord is not involved
D. B and C only.
8. Which of the following best describes the autonomous nervous system?
A. it is the same as a reflex
B. In general, these are the motor nerves that we control
C. These nerves are not under our control.
D. they are the same as somatic nerves.
9. Which of the following could be said about a neuron
A. It is the functioning unit of the nervous system
B. A bundle of them together make up a nerve
C. Neurons transmit messages along their axons to the next neuron.
D. All of the above.
10. Look at the diagram below. What is the arrow pointing at?
a. cerebrum
b. cerebellum
c. Brain stem
d. Spinal cord
11. Look at the diagram below. What is the arrow pointing to?
a. cerebrum
b. cerebellum
c. Brain stem
d. Spinal cord
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12. Which of the following anatomical structures is not part of the conducting zone?
A. pharynx
B. nasal cavity
C. alveoli
D. bronchi
13. Which of the following structures is not part of the bronchial tree?
A. alveoli
B. Bronchi
C. terminal bronchioles
D. respiratory bronchioles
14. Which of the following structures separates the lung into lobes?
A. mediastinum
B. fissure
C. root
D. pleura
15. The pleura that surrounds the lungs consists of two layers, that:
A. visceral and parietal pleurae
B. mediastinum and parietal pleurae.
C. visceral and mediastinum pleurae
D. none of the above
16. Contraction of the external intercostals muscles causes which of the following to occur?
A. The diaphragm moves downward
B. the rib cage is compressed.
C. the thoracic cavity volume decreases
D. The ribs and sternum move upward.
17. Which valve separates the left atrium from the left ventricle?
A. mitral
B. Tricuspid
C. pulmonary
D. aortic
18. Which of the following lists the valves in the order through which the blood flows from the vena cava
through the heart?
A. tricuspid, pulmonary semilunar, bicuspid, aortic semilunar
B. mitral, pulmonary semilunar, bicuspid, aortic semilunar
C. aortic semilunar, pulmonary semilunar, tricuspid, bicuspid
D. bicuspid ,aortic semilunar, tricuspid, pulmonary semilunar
19. Which chamber initially receives blood from the systemic circuit?
A. left atrium
B. left ventricle
C. right atrium
D. right ventricle
20. The myocardium would be the thickest in the .
A. left atrium
B. left ventricle
C. right atrium
D. right ventricle
21. Most blood enters the ventricle during:
A. atrial systole
B. atrial diastole
C. ventricular system
D. isovolumic contraction
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22. The first heart sound represents which portion of the cardiac cycle?
A. atrial systole
B. ventricular systole
C. Closing of the atrioventricular valves
D. closing of the semilunar valves
23. Each kidney contains approximately;
A. 1 hundred nephrons.
B. 1 million nephrons.
C. 1 thousand nephrons
D. 1 billion nephrons.
24. The amount of fluid filtered from the blood into the capsule per minute is called:
A. The glomerular filtration rate.
B. The glomerular rate.
C. The glomerular fixation rate.
D. The gluteal filtration rate.
25. The organs of the urinary system are:
1. The paired fallopian tubes, the paired ureters, the urinary bladder, and the urethra
B. The paired kidneys, the paired ovaries, the paired testes, the urinary bladder, and the urethra
C. The paired kidneys, the paired ureters, the urinary bladder, and the urethra.
D. The paired kidneys, the paired ureters, the urinary bladder, and the urethra.
26. With respect to the cardiac cycle:
A. Right ventricle starts ejecting before left ventricle
B. Pulmonary valve closes before aortic valve
C. Right & left atrial systole occur simultaneously
D. Peak aortic blood flow coincides with jugular venous c wave
Section four: Fill in the blank by writing down in your answer booklet the number and the corresponding word
(for example: 1-smell) (4 marks)
1. The brain and spinal cord make up the ____ nervous system.
2. The space between the neurons is called the ___
3. Myelin sheath helps neurons to conduct messages ___
4. ____ is the substance passed between two neurons.
5. A _____ is the basic unit of the nervous system.
6. The ___ circulation picks up oxygen for cellular use and drops off carbon dioxide for removal from the body.
7. Gas moves from an area of ___ partial pressure to an area of ___ partial pressure.
Good Luck!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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