Organs such as the spleen and the lymph nodes, often contain _________ tissue.
cartilage CT
reticular CT
adipose CT
smooth MT
The Correct Answer is B
A. cartilage CT: Cartilage connective tissue provides structural support in joints, the respiratory tract, and the ear, but it is not a component of spleen or lymph nodes, which require a softer supportive framework.
B. reticular CT: Reticular connective tissue forms a delicate, branching network of fibers that supports lymphocytes and other immune cells in organs like the spleen and lymph nodes. This framework helps filter body fluids and supports immune function.
C. adipose CT: Adipose connective tissue stores energy and provides insulation and cushioning. While it may surround organs, it does not form the internal supportive framework of lymphatic organs.
D. smooth MT: Smooth muscle tissue is found in the walls of hollow organs, blood vessels, and the digestive tract. It plays a role in involuntary movement, not in forming the supportive structure of lymphoid organs.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. skeletal MT:Skeletal muscle tissue is striated and voluntary, with long multinucleated fibers. The nuclei are located at the periphery of the cells, making it different from the muscle type described.
B. cardiac MT:Cardiac muscle tissue is striated and involuntary, with cells that usually contain one centrally located nucleus. It also features intercalated discs that allow synchronized contraction, matching the characteristics given.
C. smooth MT:Smooth muscle tissue is involuntary but non-striated. The cells are spindle-shaped with a single central nucleus, so it does not meet the description that includes striations.
D. All types of muscle tissue have these characteristics:Not all muscle types share striations, involuntary control, and a single central nucleus. This description specifically fits cardiac muscle tissue rather than all types.
Correct Answer is A
Explanation
A. goblet cells:Goblet cells are specialized epithelial cells interspersed among simple columnar cells. They secrete mucus that lubricates and protects the lining of organs such as the intestines and respiratory tract.
B. mast cells:Mast cells are found in connective tissue, where they release histamine and other chemical mediators during immune responses. They are not embedded within epithelial layers.
C. fibroblasts:Fibroblasts are connective tissue cells that produce collagen and extracellular matrix. They do not secrete mucus or reside within epithelial layers.
D. macrophages:Macrophages are immune cells present in connective tissue and the bloodstream that perform phagocytosis. They are not positioned between epithelial cells for mucus secretion.
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