Explain the roles of mucus and cilia in the respiratory system
What will be an ideal response?
Respiratory mucosa lines the nasal cavity which produces sticky mucus. This mucus moistens the air and traps incoming bacteria and other foreign debris entering the nasal cavity. The ciliated cells of the nasal mucosa move this contaminated mucus posteriorly toward the pharynx where it can be swallowed. The trachea is also lined with ciliated mucosa. These cilia move contaminated mucus toward the throat where it either can be swallowed or spat out.
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Muscarinic receptors are proteins that bind the neurotransmitter
A. acetylcholine. B. epinephrine. C. norepinephrine.
Orchid and Peony enter into a contract for the sale of Orchid's textbook at the end of the fall semester for which Peony agrees to pay Orchid $75. Peony wants to transfer her right to payment for the book to Queenie. A transfer of this right is
a. a delegation. b. an assignment. c. prohibited. d. a third-party beneficiary contract.
ECG monitoring of a patient with a suspected urologic emergency is especially important because of:
A) myocardial ischemia that is often caused by urologic dysfunction. B) the medications that many patients with urologic problems are taking. C) the potential for electrolyte imbalances and their effect on the heart. D) frequent fluctuations in the patient's heart rate caused by severe pain.
What germ layer gives rise to mesenchyme?
A. Hyperderm B. Endoderm C. Ectoderm D. Hypoderm E. Mesoderm