What makes a cell responsive to a particular hormone?
The chemical properties of the hormone
The presence of a receptor for that particular hormone
The location of the gland that secretes the hormone
The location of the target cells in the body
The site where the hormone is secreted
The Correct Answer is B
A. The chemical properties of the hormone:
Chemical properties determine solubility and transport but do not alone determine cellular response.
B. The presence of a receptor for that particular hormone:
A hormone exerts its effects only on cells that express specific receptors for that hormone.
C. The location of the gland that secretes the hormone:
Hormones are typically secreted into the bloodstream and can act at distant sites; gland location does not determine target cell responsiveness.
D. The location of the target cells in the body:
Location doesn’t matter unless the cells have the appropriate receptors.
E. The site where the hormone is secreted:
The site of secretion is irrelevant to whether a target cell can respond; it must have the receptor.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"B"}
Explanation
A. Lymph nodes: Lymph nodes do undergo some changes with age but not as dramatically as the thymus.
B. Thymus: The thymus undergoes involution after puberty, shrinking in size and being replaced largely by fat, which significantly reduces T-cell production.
C. Spleen: While some function may decline with age, the spleen does not undergo the same marked involution as the thymus.
D. Pharyngeal tonsils: The tonsils may atrophy slightly with age, but the effect is less pronounced than with the thymus.
E. Appendix: The appendix may reduce in lymphoid tissue over time but does not exhibit the same profound involution.
Correct Answer is D
Explanation
A. Segmental bronchi: There are more than five segmental (tertiary) bronchi; each lung has multiple segments.
B. Choanae: These are posterior nasal apertures, not part of the lungs.
C. Laryngeal cartilages: There are nine laryngeal cartilages in total, not five in the lungs.
D. Lobes: The right lung has three lobes (superior, middle, inferior), and the left lung has two lobes-totaling five.
E. Tracheal cartilages: The trachea has multiple C-shaped cartilaginous rings, not five.
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