Which joint classification allows for partial movement and is connected by cartilage?
Ball and socket joints
Synovial joints
Cartilaginous joints
Fibrous joints
The Correct Answer is C
A. Ball and socket joints: Ball and socket joints, such as the shoulder and hip, allow for a wide range of movement in multiple directions. They are synovial joints with a fluid-filled cavity, not primarily connected by cartilage for limited motion.
B. Synovial joints: Synovial joints have a joint cavity filled with synovial fluid and permit free movement. They include hinge, pivot, and ball-and-socket joints, providing more mobility than partial-movement joints.
C. Cartilaginous joints: Cartilaginous joints are connected by cartilage, allowing limited or partial movement. Examples include intervertebral discs and the pubic symphysis, providing stability while permitting slight flexibility.
D. Fibrous joints: Fibrous joints are connected by dense connective tissue and allow little to no movement. Examples include sutures in the skull, which provide strength and protection rather than flexibility.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Larynx: The larynx houses the vocal cords and contributes to airway protection and sound production. While it moves upward during swallowing to help partially close the airway, it does not directly block food from entering the trachea; the epiglottis is the main structure that performs this protective function.
B. Bronchi: The bronchi are the main airways that branch from the trachea into the lungs. They do not actively prevent food from entering the airway during swallowing. If food reaches the bronchi, it indicates aspiration, which can lead to serious respiratory complications.
C. Epiglottis: The epiglottis is a leaf-shaped flap of cartilage that covers the trachea during swallowing. It directs food and liquids into the esophagus, preventing them from entering the respiratory tract. This protective mechanism is crucial for preventing choking and aspiration pneumonia.
D. Diaphragm: The diaphragm is a primary muscle of respiration, creating negative pressure to allow inhalation. It does not participate in swallowing or airway protection, and it does not prevent food or liquids from entering the trachea.
Correct Answer is B
Explanation
A. Plasma: Plasma is the liquid portion of blood that transports nutrients, hormones, and waste products. It carries a small amount of dissolved oxygen but is not the primary oxygen carrier.
B. Red Blood Cells: Red blood cells contain hemoglobin, a protein that binds oxygen in the lungs and releases it to tissues. They are the main component responsible for oxygen transport throughout the body.
C. White Blood Cells: White blood cells are part of the immune system, defending the body against infection. They do not play a significant role in carrying oxygen.
D. Platelets: Platelets are involved in blood clotting and hemostasis. They do not transport oxygen or contribute to oxygen delivery to tissues.
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