The nurse is correct when explaining to the patient that the portion of the heart that is responsible for contracting the muscle layers in order to pump blood is which structure?
a. Myocardium
b. Endocardium
c. Epicardium
d. Pericardium
A
The myocardium is the middle layer of muscle fibers of the heart that contract to pump blood. The endocardium is the lining of the inner surface of the heart chambers, the epicardium is the outer layer of the heart muscle, and the pericardium is the membranous sac that surrounds the heart.
You might also like to view...
As part of her prenatal education, a 29-year-old woman who is pregnant with her first child is receiving teaching from her primary care provider
Which of the following statements by the woman reflects an accurate understanding of HIV transmission? A) "I know my baby is safe from HIV while in the womb, but the delivery will place him or her at real risk." B) "It's discouraging to know that my breast milk can pass on HIV to my baby." C) "I know it's possible, but it's comforting that the chances of my child contracting my HIV are actually very low." D) "I'm relieved to learn that a caesarean delivery will protect my baby from being born HIV positive."
One reason the brain is vulnerable to nutritional deficiencies and trauma in early infancy is the:
1. incompletely developed neuromuscular system. 2. primitive reflex system. 3. presence of various sleep-wake states. 4. cerebellum growth spurt.
The health care provider orders amantadine (Symmetrel) for a client with influenza. Which part of the client's health history would the nurse report to the health care provider prior to administering amantadine (Symmetrel)?
1. Epilepsy 2. Chronic obstructive pulmonary disease (COPD) 3. Diabetes mellitus 4. Allergy to shellfish
While eating in the hospital cafeteria, the nurse sees a visitor display the "universal sign of choking." Her first action is to:
a. Page a "Code Blue" emergency. b. Immediately perform five abdominal thrusts. c. Assess for ineffective breathing by asking, "Are you choking?" d. Deliver four sharp back blows between the scapulae.