File:Anatomy, physiology and hygiene (1900) (14778718552).jpg

Identifier: anatomyphysiolog00walk (find matches)
Title: Anatomy, physiology and hygiene
Year: 1900 (1900s)
Authors: Walker, Jerome, 1845-
Subjects: Physiology Health
Publisher: Boston, Allyn and Bacon
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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-stainers improved daily in alertness and staying powers. 73. Tobacco has the power to induce through thenervous system a feeling of lassitude, which results ininefficient use of the muscles, and consequent weakening. Opium, chloral, and other similar drugs, used repeatedlyor in large amount, produce even more depressing effects. QUESTIONS. 1. What have been the motives for physical culture in the past, and by what bad effects was excessive exercise said to have beenfollowed ? 2. What is proper exercise, and what are its effects? 3. How does it affect the mental health, and why ? 4. What is improper exercise, and what are its effects ? 5. What is to be said of exercise at different ages? 6. What of the exercise of women and girls ? 7. What of exercise in the early morning? 8. What of the varieties of exercise ? 9. What of the gymnasium ? 10. What is massage, and when is it to be employed? 11. How do alcohol, tobacco, opium, etc., affect muscles and inter- fere with muscular exercise ?
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Di CT Fig. 34. Longitudinal Section of Skin (partly diagrammatic), magnified about 100 diameters. Itsstructure and contents (with the exception of the lymphatics). E, epidermis.I), dermis.CL, color layer.TC, tactile corpuscle.N. nerve. A, artery. CT, connective tissue.F, adipose tissue.HF, hair follicle. PT, perspiratory tube and gland.SG-, sebaceous gland.EP, erector pilae muscle.H, a hair. CHAPTER VI.THE SKIN AND KIDNEYS. I. THE SKIN. 74. The Skin, or external covering of the body, is strong,flexible, and elastic, varies in smoothness and delicacy indifferent parts of the body, and has no less than six func-tions.1 It has been likened to a sentinel whose duty is toguard the body against attacks, both from within andfrom without. It consists of two distinct layers, — aninner, the dermis or true skin, and an outer, the epi-dermis or cuticle.2 75. The Dermis is composed of a dense network offibrous and elastic connective tissue (a), in the meshes ofwhich are blood-vessels, lymphatics

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