What type of synovial joint allows multiaxial movement, including flexion, extension, abduction, adduction, and rotation?
Hinge joint
Saddle joint
Ball and socket joint
Pivot joint
The Correct Answer is C
A. Hinge joint: Hinge joints allow movement primarily in one plane, such as flexion and extension, like the elbow or knee, limiting rotation and side-to-side motion.
B. Saddle joint: Saddle joints permit movement in two planes, such as flexion-extension and abduction-adduction, but do not allow full rotational movement.
C. Ball and socket joint: Ball and socket joints, like the shoulder and hip, have a spherical head fitting into a cup-like cavity, allowing multiaxial movement including flexion, extension, abduction, adduction, and rotation.
D. Pivot joint: Pivot joints allow rotational movement around a single axis, such as the atlantoaxial joint, but do not permit flexion or abduction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Ribosome: Ribosomes are responsible for protein synthesis by translating mRNA into amino acid sequences. They do not produce energy for the cell.
B. Nucleus: The nucleus stores genetic material and regulates cellular activities by controlling gene expression. It does not generate cellular energy directly.
C. Golgi apparatus: The Golgi apparatus modifies, sorts, and packages proteins and lipids for transport within or outside the cell. It is not involved in energy production.
D. Mitochondria: Mitochondria are the “powerhouses” of the cell, generating ATP through cellular respiration. They convert nutrients like glucose and fatty acids into usable energy to fuel cellular functions.
Correct Answer is D
Explanation
A. To transport oxygen in the bloodstream: Oxygen transport is the role of red blood cells and hemoglobin, not the gut microbiome. The microbiome does not participate in carrying oxygen to tissues.
B. To regulate blood pressure: While some gut microbes may indirectly influence blood pressure through metabolic and inflammatory pathways, regulating blood pressure is not their primary function.
C. To produce insulin: Insulin is produced by the pancreas. The gut microbiome does not produce insulin, though it can affect glucose metabolism indirectly.
D. To aid in digestion and nutrient absorption: The gut microbiome consists of trillions of microorganisms that help break down complex carbohydrates, synthesize certain vitamins, and improve nutrient absorption. It also contributes to gut health and immune function, making digestion and nutrient utilization its primary role.
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