1. Blood is considered a connective tissue because it originates from mesenchymal cells in the bone marrow, a characteristic of connective tissues. It connects body systems by transporting oxygen, nutrients, hormones, and waste products. Blood consists of cellular components (red cells, white cells, plRead more

    Blood is considered a connective tissue because it originates from mesenchymal cells in the bone marrow, a characteristic of connective tissues. It connects body systems by transporting oxygen, nutrients, hormones, and waste products. Blood consists of cellular components (red cells, white cells, platelets) suspended in plasma, serving roles in transport, defense, and regulation.

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  2. The plasma of blood suspends three main types of cells: red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). These cells perform transport, immune defense, and clotting functions.

    The plasma of blood suspends three main types of cells: red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). These cells perform transport, immune defense, and clotting functions.

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  3. Glandular epithelium is a type of epithelial tissue specialized in producing and secreting substances such as enzymes, hormones, and mucus. It forms the functional units of glands, playing a crucial role in regulating bodily functions and maintaining homeostasis.

    Glandular epithelium is a type of epithelial tissue specialized in producing and secreting substances such as enzymes, hormones, and mucus. It forms the functional units of glands, playing a crucial role in regulating bodily functions and maintaining homeostasis.

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  4. Gland cells arise from epithelial tissue through a process called cellular differentiation. During development, certain epithelial cells specialize and change shape, function, and structure to form secretory glands, enabling them to produce and release various substances.

    Gland cells arise from epithelial tissue through a process called cellular differentiation. During development, certain epithelial cells specialize and change shape, function, and structure to form secretory glands, enabling them to produce and release various substances.

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  5. Cuboidal epithelium is found in glandular ducts, kidney tubules, and the thyroid gland. Its primary function is secretion and absorption, as its cube-shaped cells provide the structural basis for efficient transport of molecules across cell membranes.

    Cuboidal epithelium is found in glandular ducts, kidney tubules, and the thyroid gland. Its primary function is secretion and absorption, as its cube-shaped cells provide the structural basis for efficient transport of molecules across cell membranes.

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