Nokea
The 'Adams' Apple' is the:
- A. thyroid cartilage.
- B. cricoid cartilage.
- C. corniculate cartilage.
- D. cuneiform cartilage.
Correct Answer: A
Rationale: The 'Adams' Apple' is the prominent bulge in the front of the neck and corresponds to the thyroid cartilage. This cartilage forms the largest part of the larynx and is more prominent in males due to hormonal differences. The cricoid cartilage (Choice B) is located below the thyroid cartilage. Corniculate cartilage (Choice C) and cuneiform cartilage (Choice D) are smaller cartilages in the larynx and are not responsible for the 'Adams' Apple' prominence.
You may also like to solve these questions
What is the main goal of treatment in heart failure?
- A. To increase blood pressure
- B. To cure the underlying cause
- C. To relieve symptoms and improve quality of life
- D. To induce weight loss
Correct Answer: C
Rationale: The correct answer is C: To relieve symptoms and improve quality of life. The main goal of treatment in heart failure is to manage symptoms, improve heart function, and enhance quality of life. This involves optimizing medications, lifestyle modifications, and sometimes devices or surgeries. Increasing blood pressure (A) is not the goal as high blood pressure can worsen heart failure. Curing the underlying cause (B) may not always be possible, so the focus is on managing symptoms. Inducing weight loss (D) may be necessary in some cases, but it is not the primary goal of treatment for heart failure.
Pulmonary ventilation is
- A. Tidal volume + Respiratory rate
- B. Tidal volume + Vital capacity
- C. Tidal volume + Residual volume
- D. Tidal volume + Inspiratory reserve volume
Correct Answer: A
Rationale: Pulmonary ventilation is the total volume of air moved in and out of the lungs per minute. It is calculated by multiplying tidal volume (amount of air inhaled or exhaled in one breath) by respiratory rate (number of breaths per minute). Therefore, the correct answer is A: Tidal volume + Respiratory rate.
Choice B (Tidal volume + Vital capacity) is incorrect because vital capacity is the maximum amount of air that can be exhaled after a maximum inhalation, not a component of pulmonary ventilation. Choice C (Tidal volume + Residual volume) is incorrect because residual volume is the volume of air remaining in the lungs after a maximal exhalation and is not involved in ventilation. Choice D (Tidal volume + Inspiratory reserve volume) is incorrect because inspiratory reserve volume is the additional air that can be inhaled after a normal inhalation and is not part of pulmonary ventilation calculation.
What type of muscle wraps around a respiratory bronchiole and can change the diameter of the airway?
- A. skeletal muscle
- B. smooth muscle
- C. cardiac muscle
- D. voluntary muscle
Correct Answer: B
Rationale: The correct answer is B: smooth muscle. Smooth muscle is the type of muscle that wraps around a respiratory bronchiole and can contract or relax to change the diameter of the airway. This allows for regulation of airflow in the respiratory system. Skeletal muscle (choice A) is attached to bones and is under voluntary control, not found in the bronchioles. Cardiac muscle (choice C) is specific to the heart and does not control airway diameter. Voluntary muscle (choice D) refers to skeletal muscle, which is not present in the bronchioles and does not regulate airway diameter involuntarily.
Lungs have a large number of narrow tubes called
- A. Alveoli
- B. Bronchioles
- C. Bronchi
- D. Alveolar ducts
Correct Answer: B
Rationale: The correct answer is B: Bronchioles. Bronchioles are small, narrow tubes in the lungs that branch off from the bronchi. They play a crucial role in conducting air to the alveoli for gas exchange. Alveoli (choice A) are tiny air sacs at the end of bronchioles where gas exchange occurs, not narrow tubes. Bronchi (choice C) are larger air passages that branch off from the trachea, leading to the bronchioles. Alveolar ducts (choice D) are tiny ducts that connect bronchioles to alveolar sacs, but they are not the large number of narrow tubes found in the lungs. Therefore, the correct answer is bronchioles as they specifically fit the description of narrow tubes in the lungs.
In general, when looking at acid-base balance, how does the body compensate with metabolic acidosis?
- A. Lungs ""blow off"" CO2 to raise pH
- B. Lungs retain CO2 to lower pH
- C. Kidneys retain more HCO3 to raise the pH
- D. Kidneys excrete more HCO3 to lower pH
Correct Answer: A
Rationale: The correct answer is A. In metabolic acidosis, the lungs compensate by increasing respiratory rate and depth ('blowing off' CO2) to reduce acidity and raise pH. B is incorrect because retaining CO2 would worsen acidosis. C is partially true long-term but slower acting than pulmonary compensation. D is incorrect because excreting bicarbonate lowers pH further.