Tag Archive | CHAPTER 3

Chapter 3 – Overview of Diagnostic Imaging of the Head and Neck

25 Chapter 3 – Overview of Diagnostic Imaging of the Head and Neck Robert W. Dalley William D. Robertson Patrick J. Oliverio S. James Zinreich Diagnostic medical imaging has changed medical and surgical diagnosis in ways never imagined. Every area of clinical medicine has been affected in a profound way. Medical imaging specialists are able, […]

CHAPTER 3 EXAMINATION OF THE MARROW

CHAPTER 3 EXAMINATION OF THE MARROW Williams Hematology CHAPTER 3 EXAMINATION OF THE MARROW DANIEL H. RYAN Indications for Marrow Aspirate or Biopsy Marrow Aspiration Technique Needle Biopsy Technique Preparation of Marrow Specimens for Study Films Touch Preparations Special Studies Histologic Sections Morphologic Interpretation of Marrow Preparations Overview Adequacy of the Marrow Sample Bone Marrow […]

CHAPTER 3 BIOSYNTHESIS AND SECRETION OF PEPTIDE HORMONES(cont’4)

GENERATION OF DIVERSITY A major example of the generation of diversity is the calcitonin and calcitonin gene–related peptide (CGRP) system. In this system, the C cell of the thyroid expresses a calcitonin-CGRP transcript that initially contains six exons. In the C cell, tissue-specific factors determine the use of the polyadenylation site in the fourth exon, […]

CHAPTER 3 BIOSYNTHESIS AND SECRETION OF PEPTIDE HORMONES(cont’3)

As protein synthesis continues, the signal peptide is transiently immobilized in the membrane by virtue of its hydrophobic nature or its binding to a putative signal peptide receptor.41,42 Although the nascent protein chain is transferred to the cisterna by way of an unknown, energy-dependent translocation process, a luminal surface enzyme, signal peptidase, rapidly performs proteolytic […]

CHAPTER 3 BIOSYNTHESIS AND SECRETION OF PEPTIDE HORMONES(cont’2)

The initiation of transcription by RNA polymerase II often is the rate-limiting step in gene expression and is determined by the interaction of the enzyme with a number of nuclear factors and DNA elements in the regulatory region of the transcription unit.11,12 Two types of elements participate in regulation of transcription of the typical eukaryotic […]

CHAPTER 3 BIOSYNTHESIS AND SECRETION OF PEPTIDE HORMONES

CHAPTER 3 BIOSYNTHESIS AND SECRETION OF PEPTIDE HORMONES Principles and Practice of Endocrinology and Metabolism CHAPTER 3 BIOSYNTHESIS AND SECRETION OF PEPTIDE HORMONES WILLIAM W. CHIN Overview of Peptide Hormone Synthesis and Secretion Gene Structure Messenger RNA Processing RNA Transport Translation Posttranslation Secretory Granule Secretion Regulation of Polypeptide Hormone Synthesis Generation of Diversity Chapter References […]

CHAPTER 3 SOCIAL SUPPORT

CHAPTER 3 SOCIAL SUPPORT Practice of Geriatrics CHAPTER 3 SOCIAL SUPPORT Jurgis Karuza, Ph.D. Demography of Social Relationships Social Support Family and the Caregiving Role Family Caregivers and Medical Care Summary The purpose of this chapter is to discuss the importance of social support in the lives of older adults and its relevance to the […]