This set of Human Anatomy Multiple Choice Questions & Answers (MCQs) focuses on “Splanchnology – Respiratory Apparatus & Larynx”.
1. During inspiration the diaphragm ____________
a) Reflexes to become dome shaped
b) Contracts and flattens
c) Expands
d) Shows no change
View Answer
Explanation: Drawing of breath is called as inhalation. It is also known as inspiration. During this process the air is drawn inside the lungs and the diaphragm contracts and flattens.
2. Lungs are covered by _______
a) Pleural membrane
b) Peritoneum
c) Pericardium
d) Muscles
View Answer
Explanation: Pleural membrane is the thin, moist and has two layers. Between two layers is the intrapleural space, which contains fluid secreted by the membrane.
3. Total number of alveoli in both the lungs is?
a) 3000
b) 30000
c) 500000000
d) 700000000
View Answer
Explanation: Alveoli are tiny sacs within the lungs. It allows carbon dioxide and oxygen t move between lungs and bloodstream.
4. Lungs have large number of narrow tubes called ____________
a) Alveoli
b) Bronchioles
c) Bronchi
d) Trachea
View Answer
Explanation: Bronchioles are the smallest airways within the lungs. They are not encircled by any cartilage.
5. Alveoli of lungs are lines by ____________
a) Squamous epithelium
b) Simple epithelium
c) Cuboidal epithelium
d) Columnar epithelium
View Answer
Explanation: Squamous epithelium is a single layer of flat cells in contact with the basal lamina. It helps in easy movement of gas in the lungs.
6. How many unpaired cartilage are present in larynx?
a) 2
b) 3
c) 4
d) 1
View Answer
Explanation: There are 3 unpaired cartilages present in the larynx. They are cricoids, thyroid and epiglottis.
7. The thyroid cartilage has a posterior margin that forms superior and inferior horns.
a) True
b) False
View Answer
Explanation: The posterior border of each lamina is prolonged upward and downward to form 2 projections, the superior horn and the inferior horn. The superior horns point upwards and backwards, the inferior horn points downwards.
8. The superior horn of thyroid cartilage is connected to which bone?
a) Vertebra
b) Ribs
c) Hyoid
d) Epiglottis
View Answer
Explanation: Hyoid bone is horse shoe shaped bone situated in anterior midline of the neck. It lies at base of the mandible.
9. Larynx is found at what vertebral level?
a) CV3-CV6
b) CV6-CV3
c) CV2-CV5
d) CV5-CV2
View Answer
Explanation: Larynx is a tube shaped organ in the neck. It contains vocal cords. It is about 5cm long. It is located between pharynx and trachea.
Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.
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