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Submandibular Gland: One of two salivary glands in the neck, located in the space bound by the two bellies of the digastric muscle and the angle of the mandible. It discharges through the submandibular duct. The secretory units are predominantly serous although a few mucous alveoli, some with serous demilunes, occur. (Stedman, 25th ed)

Lymph Node Exam

JoVE 10061

Source: Richard Glickman-Simon, MD, Assistant Professor, Department of Public Health and Community Medicine, Tufts University School of Medicine, MA

The lymphatic system has two main functions: to return extracellular fluid back to the venous circulation and to expose antigenic substances to the immune system. As the collected fluid passes through lymphatic channels on its way back to the systemic circulation, it encounters multiple nodes consisting of highly concentrated clusters of lymphocytes. Most lymph channels and nodes reside deep within the body and, therefore, are not accessible to physical exam (Figure 1). Only nodes near the surface can be inspected or palpated. Lymph nodes are normally invisible, and smaller nodes are also non-palpable. However, larger nodes (>1 cm) in the neck, axillae, and inguinal areas are often detectable as soft, smooth, movable, non-tender, bean-shaped masses imbedded in subcutaneous tissue. Lymphadenopathy usually indicates an infection or, less commonly, a cancer in the area of lymph drainage. Nodes may become enlarged, fixed, firm, and/or tender depending on the pathology present. For example, a soft, tender lymph node palpable near the angle of the mandible may indicate an infected tonsil, whereas a firm, enlarged, non-tender lymph


 Physical Examinations II

Intravital Microscopy for Imaging Subcellular Structures in Live Mice Expressing Fluorescent Proteins

1Intracellular Membrane Trafficking Unit, Oral and Pharyngeal Cancer Branch National Institute of Dental and Craniofacial Research, National Institutes of Health, 2Department of Biology, University of North Carolina at Chapel Hill, 3Department of Chemical & Biochemical Engineering and Department of Biomedical Engineering, Rutgers University

JoVE 50558


 Biology

Murine Cervical Heart Transplantation Model Using a Modified Cuff Technique

1Center of Operative Medicine, Department of Visceral, Transplant and Thoracic Surgery, Innsbruck Medical University, 2Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine

JoVE 50753


 Medicine

Isolation and Characterization of Satellite Cells from Rat Head Branchiomeric Muscles

1Department of Orthodontics and Craniofacial Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 2Department of Biological Structure, University of Washington School of Medicine, 3Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center

JoVE 52802


 Developmental Biology

Heterotopic Cervical Heart Transplantation in Mice

1Department of Cardiovascular Surgery, Division of Experimental Surgery, German Heart Center Munich, Technische Universität München, 2Institute of Pathology, Helmholtz Zentrum Munich, 3Department of Cardiovascular Surgery, Division of Experimental Surgery, German Heart Center Munich, Technische Universität München, 4Department of Cardiovascular and Thoracic Surgery, General Hospital Linz

JoVE 52907


 Medicine

A Novel Microsurgical Model for Heterotopic, En Bloc Chest Wall, Thymus, and Heart Transplantation in Mice

1Johns Hopkins University School of Medicine, 2Burn and Complex Wound Center, 3Section of Plastic and Reconstructive Surgery, University of Chicago Medical Center, 4Division of Plastic, Reconstructive, and Maxillofacial Surgery, R Adams Cowley Shock Trauma Center, 5Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, 6Vascularized Composite Allotransplantation (VCA) Lab, Johns Hopkins University School of Medicine

JoVE 53442


 Medicine

Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea

1Clinical and Biological Sciences Department, Neurology Unit, University of Torino, San Luigi Gonzaga Hospital, 2Oncology Department, Radiology Unit, University of Torino, San Luigi Gonzaga Hospital, 3Clinical and Biological Sciences Department, Dietologic and Nutrition Unit, University of Torino, San Luigi Gonzaga Hospital

JoVE 54606


 Medicine

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