Which of the following is not one of the primary functions performed by bones?
Mineral storage
Protection
Hormonal production
Hematopoiesis
The Correct Answer is C
A. Mineral storage: Bones act as a reservoir for vital minerals, particularly calcium and phosphorus, which can be released into the bloodstream as needed.
B. Protection: The skeletal system protects delicate internal organs; for example, the skull protects the brain and the ribcage protects the heart and lungs.
C. Hormonal production: While bone tissue is involved in some endocrine signaling (like osteocalcin), producing hormones is not considered one of the primary mechanical or physiological functions of the skeletal system.
D. Hematopoiesis: Red bone marrow within certain bones is the primary site for the formation of blood cells.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Nucleus: This is an organelle within a cell, not a structure between tissues.
B. Basement membrane: This is the thin, extracellular layer that attaches epithelial tissue to the underlying connective tissue. It is composed of the basal lamina (from the epithelium) and the reticular lamina (from the connective tissue).
C. Lysosome: This is a digestive organelle within a cell.
D. Endoplasmic reticulum: This is an internal cellular membrane system used for protein and lipid synthesis.
Correct Answer is B
Explanation
A. Proteins: Proteins are one of the four major classes of organic (carbon-based) molecules in the body.
B. Salts: Salts (like NaCl) are inorganic compounds because they typically do not contain carbon-hydrogen bonds.
C. Lipids: Lipids (fats) are a major group of organic substances essential for cell membranes and energy.
D. Nucleic acids: DNA and RNA are organic molecules that carry genetic information.
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