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BIOS 135 Week 1 Assessment
- The carina is the point of division for the mainstem bronchi. The external landmark
for this division point is the fifth thoracic vertebra.
True False:
Answer True
- What is the narrowest portion of the airway in the adult larynx?
Glottis
Cricoid ring Vocal cords Vallecula:
Answer Glottis
- The diaphragm is innervated by which of the following nerves? Phrenic
Seventh cranial Glossopharyngeal Vagus:
Answer Phrenic
- Chronic sinus infections sometimes lead to lower respiratory tract infec- tions.
True False:
Answer True
- The sol layer of the mucociliary escalator is ? On the top of the gel layer
Less viscous than the gel layer Very thick
Highly viscous:
Answer Less viscous than the gel layer
- Which of the following is the primary muscle active in quiet breathing?
Intercostal muscles Pectoralis major Abdominal muscles
Diaphragm:
Answer Diaphragm
- Sharp inorganic crystal like asbestos fibres damage or kill macrophages causing the
release of their toxic substances. These in turn attract fibroblasts that scar the affected lung.
True False:
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Answer True
- Which of the following are the primary muscles that contract in a normal
exhalation (non labored)?Rectus abdominus Diaphragm External intercostals
None:
Answer None
- Cigarette smoking causes all types of mucous cells to proliferate and spread
into small bronchioles where they are normally absent.
True False:
Answer True
- Which of the following represents the lung's overall contribution to home- ostasis?
Control of blood pressure Metabolism of waste products from cellular metabolism Excretion of liquid waste products
Gas exchange and acid base balance:
Answer Gas exchange and acid base balance
- Which of the following mechanisms is by far the most significant cause of thoracic
cavity enlargement during inspiration?Abdominal muscle contraction Downward movement of the diaphragm Abdominal muscle relaxation
Upward movement of the diaphragm:
Answer Downward movement of the diaphragm
12. The major muscle(s) of ventilation is (are) called the:
Pulmonary ligament
Diaphragm Abdominals Scalenes:
Answer Diaphragm
- Parasympathetic stimulation raises the viscosity of airway secretion while
sympathetic stimulation reduces the viscosity.
True False:
Answer True
- In a healthy person approximately of mucus is secreted per day. 2 / 3
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Answer 100mL
- Upper airway resistance is less than lower airway resistance. True
False:
Answer False
- How many of the ribs articulate with thoracic vertebrae?
Answer 12
- The respiratory muscles would have to work harder in all of the following
conditions EXCEPT:
An increase in tidal volume demand A decrease in lung compliance A decrease in airway resistance
A decrease in the production of surfactant:
Answer A decrease in airway resistance
- Breathing cold air through the mouth will move the ISB;
deeper into the airways.deeper into the alveoli. into the oropharynx.
higher up the airways.:
Answer deeper into the airways
- Match the phrases on the left with the most appropriate terminology on the right:
(Points : 8)
Answer Potential Matches:
Costophrenic angle 1 : Connects visceral pleural diaphram
Thoracentesis 2 : Left lung portion overlapping heart Pulmonary
ligament 3 : Air in pleural space
Parietal pleura 4 : Diaphram meets chest wall
Pneumothorax 5 : Result of inflamed pleural space
Lingula 6 : Tube in pleural cavities
Pleural space 7 : Between visceral and parietal membranes
Pleural effusion 8 : Attached to inner chest wall surface:
Answer
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