Which germ layer produces nervous tissue?
Ectoderm
Endoderm
Mesoderm
Epithelium
The Correct Answer is A
A. Ectoderm: The ectoderm gives rise to the nervous system (including the brain and spinal cord) and epidermis.
B. Endoderm: The endoderm forms internal linings of the gut and associated organs (e.g., liver, lungs), not primary nervous tissue.
C. Mesoderm: The mesoderm produces muscle, bone, and the circulatory system, among other structures.
D. Epithelium: Epithelium is a tissue type, not a germ layer; epithelial tissues arise from one or more germ layers.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Atom: Atoms are the basic chemical building blocks but are not themselves living.
B. Organelle: Organelles are membrane-bound structures within cells that perform specialized tasks but are not independent living units.
C. Molecule: Molecules are chemical combinations of atoms (e.g., proteins, lipids) and are not alive.
D. Cell: The cell is the basic unit of life, capable of metabolism, growth, reproduction, and response to stimuli.
Correct Answer is A
Explanation
A. Cell: The cell is the smallest structural and functional living unit of the body capable of independent life processes.
B. Organ: An organ is a collection of tissues performing specific functions and is larger than a cell.
C. System: A system is a higher-level organization of multiple organs working together.
D. Tissue: A tissue is a group of similar cells performing a common function, larger than a single cell.
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