____ in the heart will both increase the speed of the heart as well as the strength of contraction.

Which of the following is responsible for the platelet surface negative charge and is found on the surface membrane of the interior channels?

a. Dense tubular system b. Open canalicular system c. Submembranous cytoskeleton d. Glycocalyx

You are providing care to a 54-year-old patient complaining of chest pain. The patient asks to speak to you privately. He tells you he is taking Cialis® for erectile dysfunction, and his wife does not know he is taking it. He does not want his wife to find out. As you are putting the EMS bags back in the ambulance, the wife corners you and insists that you tell her what her husband said. What

should you do? A) You should tell her. As his spouse, she is legally entitled to know his medical information. B) You should not tell her. There is no reason to humiliate your patient by disclosing his embarrassing condition. C) You should not tell her. By law, your conversation with your patient is confidential. D) You should tell her. He may be having an affair without her knowledge, and she needs to be tested for sexually transmitted diseases.