. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. 414. How are the fluids and solids of the bod)produced ? 415 419. Give the anatomy of the secretory Organ*. 415. Name the secretory Describe the exhalants. What is represented by fig. 86 ? 417. Definefollicles. PHYSIOLOGY OF THE SECRETORY ORGANS. 193 418. The glands are soft, fleshy organs, and as various intheir structure, as the secretions which it is their function toproduce. Each gland is composed of many small lobulesunited in a compact and distinct mass, that communicates bya sm
. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. 414. How are the fluids and solids of the bod)produced ? 415 419. Give the anatomy of the secretory Organ*. 415. Name the secretory Describe the exhalants. What is represented by fig. 86 ? 417. Definefollicles. PHYSIOLOGY OF THE SECRETORY ORGANS. 193 418. The glands are soft, fleshy organs, and as various intheir structure, as the secretions which it is their function toproduce. Each gland is composed of many small lobulesunited in a compact and distinct mass, that communicates bya small duct with the principal outlet, or duct of the gland is supplied with arteries, veins, lymphatics, andnerves. These, with the ducts, are arranged in a peculiarmanner, and connected by cellular membrane. 419. There are two classes of glands, one for the modi-fication of the fluids which pass through them, as the mesentericand lymphatic glands ; and the other for the secretion of fluidswhich are either useful in the animal economy, or require tobe rejected from the body. Fig. Fig. 87. 1, 1, A secretory gland, a, 2, Minute ducts that are spread through tb«glands. These coalesce to form the main duct, 3. PHYSIOLOGY OF THE SECRETORY ORGANS. 420. Secretion is one of the most obscure and mys-terious functions of the animal economy. It. is that processby which various substances are separated from the blood,either with or without experiencing any change during their 418. Give the structure of the glands. 419. How are the glands arranged ?420—431. Give the physiology of the secretory organs. 420. What is secre-tion ? 17 194 ANATOMY, PHYSIOLOGY, AND HYGIENE. separation. Not only is the process by which substances areseparated from the blood, called secretion, but the same termis also applied to substances thus separated. Thus physiolo-gists say, that by the process of secretion, bile is formed bythe liver; and also, that bile is the secretion of this organ. 421. T
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