A nurse is reviewing the anatomy and physiologic functioning of the heart. The nurse should recognize that which statement best describes the atrial kick?
The atria contract toward the end of diastole and push the remaining blood into the ventricles.
The atria contract during systole and attempt to push against closed valves.
Atrial kick is the pressure exerted against the atria as the ventricles contract during systole.
Contraction of the atria at the beginning of diastole can be felt as a palpitation.
The Correct Answer is A
A. The atria contract toward the end of diastole and push the remaining blood into the ventricles.
This choice is correct. During atrial systole (atrial contraction), the atria contract, pushing the remaining blood into the ventricles. This additional filling of the ventricles optimizes cardiac output.
B. The atria contract during systole and attempt to push against closed valves.
This statement is incorrect. The atria do not contract during systole; they contract during diastole (atrial systole) to fill the ventricles.
C. Atrial kick is the pressure exerted against the atria as the ventricles contract during systole.
This statement is incorrect. Atrial kick refers to the atrial contraction, not the pressure exerted against the atria.
D. Contraction of the atria at the beginning of diastole can be felt as a palpitation.
This statement is not entirely accurate. A palpitation is a sensation of rapid or strong heartbeat, which might be felt during various cardiac events, not specifically during atrial contraction at the beginning of diastole.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Auricle (Pinna):
The auricle, also known as the pinna, is the visible external part of the ear. It consists of movable cartilage and skin. When administering eardrops, pulling the auricle up and back helps to straighten the ear canal, allowing the drops to enter the ear effectively.
B. Mastoid Process:
The mastoid process is a bony prominence located behind the ear. It is not a part of the outer ear structure involved in administering eardrops.
C. Outer Meatus:
The outer meatus, also known as the external acoustic meatus or ear canal, is the tube-like structure leading from the auricle to the eardrum. It is the passage through which eardrops are administered. Pulling the auricle up and back helps to straighten the outer meatus for the proper administration of eardrops.
D. Concha:
The concha refers to the bowl-shaped depression next to the ear canal. While it is a part of the outer ear, pulling the concha is not a technique used for administering eardrops. The auricle, specifically, is manipulated to facilitate the process.
Correct Answer is A
Explanation
A. Frenulum:
The frenulum is a thin band of tissue in the mouth that connects the tongue to the floor of the mouth. It aids in the tongue's movement and flexibility during speaking and swallowing.
B. Palate:
The palate refers to the roof of the mouth. It has two parts: the hard palate (at the front, made of bone) and the soft palate (at the back, made of muscle). The palate plays a crucial role in speech and swallowing.
C. Uvula:
The uvula is a small, fleshy extension at the back of the soft palate in the mouth. It participates in various functions, including speech articulation, preventing food from entering the nasal cavity during swallowing, and producing certain sounds.
D. Papillae:
Papillae are small, raised structures on the tongue that contain taste buds. They are responsible for detecting different tastes: sweet, salty, sour, bitter, and umami (savory). Papillae give the tongue its rough texture.
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