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Source Institute | Endocrine System

Chapter 17: Diffuse Endocrine Organs, Adipose Signaling, Gastrointestinal Hormones, and Vitamin D

This chapter expands endocrine study beyond the classical glands to adipose tissue, the gastrointestinal tract, liver, kidneys, heart, skin, bone, thymus, and immune tissues, emphasizing hormone signaling, metabolism, fluid and mineral regulation, medications, procedures, and massage-therapy relevance.

Course: Endocrine SystemChapter: 17 of 20Four instructional units + knowledge checks + quizSigned in: Not signed inActive Time: 00:00:00

Chapter Focus

This chapter examines diffuse endocrine organs, adipose signaling, gastrointestinal hormones, and vitamin d through endocrine anatomy and physiology, pathology and medical management, massage-therapy safety, client assessment, clinical reasoning, body-system integration, and MBLEx preparation.

Mini Outline

  1. Adipose Tissue as an Endocrine Organ.
  2. Gastrointestinal and Hepatic Hormones.
  3. Kidney, Heart, Skin, Bone, Thymus, and Immune Endocrine Functions.
  4. Clinical Integration and Massage Relevance.

Learning Objectives

Explain adipose-tissue endocrine signaling through leptin, adiponectin, cytokines, and energy-balance pathways.
Describe major gastrointestinal and hepatic hormones, including gastrin, secretin, CCK, incretins, ghrelin, somatostatin, bile-acid signals, IGF-1, and angiotensinogen.
Explain renal, cardiac, cutaneous, skeletal, thymic, and immune endocrine functions, including renin, erythropoietin, calcitriol, natriuretic peptides, FGF23, and immune-endocrine signaling.
Connect diffuse endocrine signaling to obesity, diabetes, edema, renal and cardiac disease, vitamin D disorders, bariatric procedures, and GLP-1 therapies.
Apply weight-neutral assessment, contraindications, precautions, scope, referral, special-population, and massage-planning principles.
Use integrated endocrine concepts in MBLEx-style clinical reasoning.

Chapter Summary

Adipose tissue releases hormones and inflammatory mediators that influence appetite, metabolism, vascular function, and insulin sensitivity.

The gastrointestinal tract and liver coordinate digestion, satiety, glucose regulation, hormone metabolism, growth signaling, and bile-acid communication.

Kidneys, heart, skin, bone, thymus, and immune tissues act endocrinologically to regulate volume, blood pressure, erythropoiesis, vitamin D, minerals, and host responses.

Massage planning must integrate edema, cardiopulmonary stability, renal access sites, bariatric history, GLP-1 effects, skin and sensation, and weight-neutral communication.

Key Takeaways

  • Body size is not a diagnosis; use weight-neutral, function-based assessment.
  • GLP-1 therapies affect insulin secretion, appetite, and gastric emptying and may require timing and positioning adaptations.
  • Renin, erythropoietin, calcitriol, natriuretic peptides, and FGF23 connect renal, cardiac, bone, and mineral physiology.
  • Acute breathlessness, rapidly worsening edema, severe abdominal pain, repeated vomiting, or access-site complications require referral.

Chapter Glossary

Hover over a term, or tap it on a phone, to review its definition.

  • Leptin
  • Adiponectin
  • GLP-1
  • Ghrelin
  • Renin
  • Erythropoietin
  • Calcitriol
  • FGF23

Vocabulary Matching Practice

Locked: Complete all four units and all three knowledge checks first.

Complete this practice before the chapter quiz unlocks.

Select a term, then select the matching definition.

Terms

Definitions

Chapter 17 Quiz