Which of the following structures is part of the upper respiratory tract?
Trachea
Alveoli
Bronchi
Pharynx
The Correct Answer is D
A. Trachea: The trachea is part of the lower respiratory tract. It conducts air between the larynx and bronchi and provides a passageway for airflow into the lungs.
B. Alveoli: Alveoli are tiny air sacs within the lungs where gas exchange occurs. They are located in the lower respiratory tract and are not part of the upper airway.
C. Bronchi: The bronchi branch from the trachea into each lung. They are considered part of the lower respiratory tract, directing air toward the alveoli.
D. Pharynx: The pharynx, located behind the nasal and oral cavities, is part of the upper respiratory tract. It serves as a pathway for air from the nose and mouth to the larynx and trachea.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Arteries: Arteries carry oxygenated blood away from the heart under high pressure but are not the primary sites for nutrient and waste exchange.
B. Veins: Veins return deoxygenated blood to the heart and serve as reservoirs, but they do not facilitate significant exchange with tissues.
C. Capillaries: Capillaries are thin-walled vessels that connect arterioles and venules, allowing efficient diffusion of oxygen, nutrients, and waste products between blood and surrounding tissues.
D. Lymph vessels: Lymph vessels transport lymph and assist in immune function but do not directly exchange nutrients or wastes with tissues.
Correct Answer is B
Explanation
A. To connect muscle to muscle: Connections between muscles are generally formed by aponeuroses or fascia, not tendons, and this is not their primary role in movement.
B. To connect muscle to bone: Tendons are strong, fibrous connective tissues that attach muscles to bones, allowing the force generated by muscle contraction to move the skeleton efficiently.
C. To store energy for muscle contraction: While elastic components in muscles and tendons can store some energy, the primary function of tendons is structural connection, not energy storage.
D. To protect the muscle during contraction: Tendons provide stability and transmit force, but they do not directly shield muscles from injury during contraction.
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