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Figure 4-2. A "typical synovial joint:--diagrammatic. c. Synovial Membrane, Space, and Fluid. (1) Synovial membrane. The synovial membrane lines the inner surface of the capsule. It secretes synovial fluid into the synovial space. (2) Synovial space. Figure 4-2 exaggerates the amount of space between the bones. The space within the capsule allows movement. (3) Synovial fluid. Synovial fluid is a colorless, viscous fluid similar in consistency to raw egg white. It lubricates the articulation. MD0006 4-9
d. Capsule. The "typical" synovial articulation is surrounded by a sleeve of dense FCT known as the capsule. The capsule encloses the articulation. e. Ligaments. Primarily, ligaments hold bones together. Ligaments also may help restrain motion in certain directions and stabilize the articulation. f. Muscles. Skeletal muscles apply the forces to produce a given motion. NOTE: See table 4-1 for a summary of the structures in a "typical" synovial articulation, the tissues <strong>com</strong>posing each structure, and the actions attributed to each structure. 4-10. CLASSIFICATION OF SYNOVIAL JOINTS Synovial joints are further classified according to the kind of motion and the number of axes of motions used. a. Uni-Axial Synovial Joints. (1) In uni-axial synovial joints, motion occurs in only one plane. The joints of the fingers (interphalangeal) flex and extend in the sagittal plane. These are <strong>com</strong>monly referred to as hinge joints. (2) If a single rotatory (rotational) motion occurs around a post-like structure, the joint is a pivot joint. The atlas vertebra rotating around the dens (tooth like projection) of the axis vertebra at the top of the neck (base of the skull) is a pivot joint. b. Bi-Axial Synovial Joints. In bi-axial synovial joints, motion between the bones occurs in two planes. Here the surface in contact is curved or rounded in two directions. (1) The proximal phalanx of a finger can flex and extend and move from side to side on the rounded head of the metacarpal bone. This is the MP or metacarpophalangeal joint. (2) When the two surfaces are curved in directions at right angles to each other, a shape similar to that of a cowboy's saddle is formed. This type of synovial joint is called a saddle joint. In the human body, the saddle joint is located at the base of the thumb. MD0006 4-10
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U. S. ARMY MEDICAL DEPARTMENT CENTE
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TABLE OF CONTENTS Lesson Paragraphs
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9 THE HUMAN CARDIOVASCULAR AND LYMP
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MD0006 v LIST OF ILLUSTRATIONS Figu
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MD0006 vii LIST OF TABLES Table Pag
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Material Furnished: In addition to
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LESSON ASSIGNMENT LESSON 1 Introduc
Page 15 and 16: terminology. Accountants have debit
Page 17 and 18: . Head and Neck. The brain, eyes, e
Page 19 and 20: Figure 1-2. Anatomical position and
Page 21 and 22: 1-11. NAMES a. Names are chosen to
Page 23 and 24: d. Mitochondria (Plural). Mitochond
Page 25 and 26: 5. What is a cell? 6. What is a tis
Page 27 and 28: 15. In figure 1-6, three points are
Page 29 and 30: 18. In figure 1-8, parts of a "typi
Page 31 and 32: 14. a. Midsagittal or median plane.
Page 33 and 34: 2-1. DEFINITION LESSON 2 TISSUES OF
Page 35 and 36: d. Functions. According to its loca
Page 37 and 38: . Types of Bone Tissues. There are
Page 39 and 40: Figure 2-4. A neuron. Figure 2-5. A
Page 41 and 42: 8. Characteristic cells of fibrous
Page 43 and 44: SOLUTIONS TO EXERCISES, LESSON 2 1.
Page 45 and 46: LESSON ASSIGNMENT LESSON 3 The Huma
Page 47 and 48: 3-2. COVERINGS OF THE HUMAN BODY Th
Page 49 and 50: 3-6. GLANDS The types of glands inc
Page 51 and 52: 3-13. BURSA a. A bursa (figure 3-3)
Page 53 and 54: EXERCISES, LESSON 3 REQUIREMENT. Th
Page 55 and 56: 16. The term serous refers to a . S
Page 57 and 58: 13. Sebaceous glands produce an oil
Page 59 and 60: MD0006 4-2 4-13. Describe the gener
Page 61 and 62: Section II. BONE AS AN INDIVIDUAL O
Page 63 and 64: 4-5. DEVELOPMENT OF AN INDIVIDUAL B
Page 65: Example: The frontal bone. (The fro
Page 69 and 70: (2) In the plane joint, the contact
Page 71 and 72: Figure 4-3B. Posterior view of the
Page 73 and 74: (d) The sacrum, which is a bony fus
Page 75 and 76: Figure 4-6. The human skull (front
Page 77 and 78: PART UPPER MEMBER LOWER MEMBER GIRD
Page 79 and 80: Figure 4-8. The human scapula and c
Page 81 and 82: Figure 4-10. The human hand. Figure
Page 83 and 84: Figure 4-13. The human foot. MD0006
Page 85 and 86: 7. In the early fetus, bones are pr
Page 87 and 88: 17. Name and define the two major s
Page 91 and 92: 19. The regions of the vertebral co
Page 93 and 94: 5-1. MUSCLE TISSUES LESSON 5 THE HU
Page 95 and 96: Figure 5-1. Skeletal and facial mus
Page 97 and 98: a. Trunk Musculature. The trunk mus
Page 99 and 100: . Sesamoid bones, such as the patel
Page 105 and 106: 6-1. GENERAL LESSON 6 THE HUMAN DIG
Page 107 and 108: a. Teeth. Figure 6-2. Anatomy of th
Page 109 and 110: 6-4. PHARYNX The pharynx (pronounce
Page 111 and 112: common bile duct. The common bile d
Page 115 and 116: 14. The texture of the pancreas is
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10. The process of digestion is fac
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7-1. INTRODUCTION LESSON 7 THE HUMA
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SUBDIVISION FUNCTION (1) SUPRALARYN
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(2) Oropharynx. The portion of the
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Figure 7-4. Infralaryngeal structur
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7-8. DIAPHRAGMATIC (ABDOMINAL) BREA
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9. The functions of the supralaryng
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SOLUTIONS TO EXERCISES, LESSON 7 1.
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LESSON ASSIGNMENT LESSON 8 The Huma
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8-3. THE KIDNEY a. General. (1) The
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the cortex layer, it once again bec
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eginning of an embryo (the process
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(2) Wall structure. The inner linin
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Figure 8-5. The human male genital
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(1) Surrounding the urethra is a ce
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8. The first coiled portion of the
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21. The external genitalia of the h
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19. The inner lining of the uterus
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LESSON ASSIGNMENT LESSON 9 The Huma
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LESSON 9 THE HUMAN CARDIOVASCULAR A
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(1) Red blood cells (erythrocytes).
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(1) The arteries carry blood away f
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(3) Relationship of wall thickness
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ecome closed for whatever reason, t
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Figure 9-5. Main arteries of the hu
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Figure 9-6. Main veins of the human
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a. Lymphatic Capillaries. Lymphatic
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5. The most common types of white b
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18. In the case of collateral circu
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15. The coronary arteries supply "n
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LESSON ASSIGNMENT LESSON 10 The Hum
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. The Endocrine System. In the huma
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e. Of the many hormones produced by
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hormones are involved in the mobili
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5. The pituitary body is a small -s
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SOLUTIONS TO EXERCISES, LESSON 10 1
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13. During the first half of the me
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MD0006 11-2 11-12. Define periphera
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11-5. NEURON PROCESSES Figure 11-1.
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a. The Synapse. A synapse (figure 1
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system (ANS). The CNS is made up of
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Figure 11-5B. Human brain (bottom v
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d. Ventricles. Within the brain, th
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Figure 11-7. A schematic diagram of
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(1) Cranial nerves. The 12 pairs of
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(4) Visceral motor neurons of the A
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organ. The cell bodies of the secon
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(2) Motor pathways. A motor pathway
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11-26. GENERAL Section IX. THE SPEC
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c. Internal Structures of the Eyeba
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(5) Iris. Another structure formed
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11-30. GENERAL Section X. THE SPECI
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11-33. THE INTERNAL EAR a. Labyrint
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Figure 11-14. Diagram of the scalae
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11-36. SEMICIRCULAR DUCTS (FIGURE 1
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f. Cerebellum. The cerebellum has b
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7. Each item below refers to the th
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18. Groups of related functions are
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30. If it carries information from
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46. Name examples of general senses
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61. The orbit is the cavity in the
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73. The central column of the cochl
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SOLUTIONS TO EXERCISES, LESSON 11 1
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19. The ventricles of the brain are
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34. In the ANS, the number of neuro
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52. The outermost layer of the eyeb
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ossicles are: malleus, incus, and s
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COMMENT SHEET SUBCOURSE MD0006 Basi
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