What structure is formed by the union of the basal and reticular lamina?
Nucleus
Basement membrane
Lysosome
Endoplasmic reticulum
The Correct Answer is B
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.
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Correct Answer is C
Explanation
A. neoplasms: This refers to tumors or new, abnormal growths of tissue, which can be cancerous or benign.
B. Paget's disease: This involves irregular bone remodeling leading to enlarged and deformed bones, but it is not defined primarily by a simple loss of density.
C. osteoporosis: This is the classic age-related condition where bone resorption exceeds bone formation, leading to porous, brittle bones.
D. osteomalacia: This is a softening of the bones, typically due to a vitamin D deficiency, often called "rickets" in children.
Correct Answer is D
Explanation
A. pinocytosis: Often called "cell drinking," this is the ingestion of extracellular fluid and dissolved solutes.
B. exocytosis: This is the process of expelling substances out of the cell.
C. diapedesis: This is the movement of white blood cells through intact capillary walls into surrounding tissue.
D. phagocytosis: Often called "cell eating," this is the process by which a cell (like a macrophage) engulfs and digests large particles or bacteria.
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