18) When the diameters of the respiratory passages decrease, which of the follow

Question

18) When the diameters of the respiratory passages decrease, which of the following is observed? A) The amount of cartilage in the walls of the passages increases. B Simple cuboidal epithelial linings are replaced by pseudostratified squamous epithlia. e walls of the passages become more muscular )More goblet cells are observed in the epithelial lining. E) All of these are correct. The reason to my answer is 9) When asthma attacks, the patient can hardly breathe. Which of the followir should probably be administered to the patient? A) norepinephrine, to relax smooth muscle in the bronchioles and increase airflow B) antihistamine, to counteract the bronchoconstriction caused by histamine C ACh, to increase bronchoconstriction and B are correct. )A, B and C are correct The reason to my answer is

Explanation / Answer

Answer18

c)

because it prevents collapse lumen of the conducting portion

it is composed of 3 layers

Answer 19

D)

Because antihistamines increased vascular permeability caused by histamine. also inhibit histamine-induced contraction of smooth bronchial muscles

norepinephrine is released in large quantities into the synapse, where it activates the adrenergic receptors.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.