of the above is 49. Which of the following statements about classes of drugs used for arrnyt Sodium channel blockers prolong phase O and depresses phase 4. b. Calcium channel blockers prolong phase 2. Potassium channel blockers prolong phase 2. d. a. C. Adenosine blocks Ktchannels in atria

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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### Educational Content on Pharmacology and Pathology

#### Question 48:
The question pertains to a specific statement not visible in the provided text. The correct answer is marked as **d. None of the above is correct**.

#### Question 49:
This question addresses the effects of various drug classes used for arrhythmia. It asks which statement is incorrect regarding these drugs:
- **a.** Sodium channel blockers prolong phase 0 and depress phase 4.
- **b.** *Incorrect Statement:* Calcium channel blockers prolong phase 2. (Marked as incorrect in the text)
- **c.** Potassium channel blockers prolong phase 2.
- **d.** Adenosine blocks K⁺ channels in atria.

#### Question 50:
The question explores statements about aneurysms, seeking the incorrect one:
- **a.** Dissecting aneurysm is a type of false aneurysm and it is a life-threatening condition.
- **b.** One of the factors responsible for the development of an aneurysm is high blood pressure.
- **c.** *Incorrect Statement:* True aneurysm involves a tear in the innermost layer of a blood vessel. (Marked as incorrect in the text)
- **d.** It can lead to the formation of thrombus and emboli.

This content is designed to test understanding of drug mechanisms and conditions related to cardiovascular health, emphasizing the importance of recognizing incorrect medical statements for accurate diagnosis and treatment.
Transcribed Image Text:### Educational Content on Pharmacology and Pathology #### Question 48: The question pertains to a specific statement not visible in the provided text. The correct answer is marked as **d. None of the above is correct**. #### Question 49: This question addresses the effects of various drug classes used for arrhythmia. It asks which statement is incorrect regarding these drugs: - **a.** Sodium channel blockers prolong phase 0 and depress phase 4. - **b.** *Incorrect Statement:* Calcium channel blockers prolong phase 2. (Marked as incorrect in the text) - **c.** Potassium channel blockers prolong phase 2. - **d.** Adenosine blocks K⁺ channels in atria. #### Question 50: The question explores statements about aneurysms, seeking the incorrect one: - **a.** Dissecting aneurysm is a type of false aneurysm and it is a life-threatening condition. - **b.** One of the factors responsible for the development of an aneurysm is high blood pressure. - **c.** *Incorrect Statement:* True aneurysm involves a tear in the innermost layer of a blood vessel. (Marked as incorrect in the text) - **d.** It can lead to the formation of thrombus and emboli. This content is designed to test understanding of drug mechanisms and conditions related to cardiovascular health, emphasizing the importance of recognizing incorrect medical statements for accurate diagnosis and treatment.
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A class of medicines that function across cell membranes by inhibiting potassium efflux. The length of ACTION POTENTIALS is increased by the blocking of potassium channels. They are used as ANTI-ARRHYTHMIA AGENTS and VASODILATOR AGENTS.

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