Chapter 37.1, Problem 1CYL

Summary Introduction

To describe:

The four methods of communication between cells in an animal’s body.

Introduction:

To ensure the proper functioning of the body, the cells present in the body communicate with each other. The cell communication has four categories: direct, synaptic, endocrine, and paracrine communications.

Summary Introduction

To explain:

The reason that some cells respond to chemical messengers and others do not.

Introduction:

Synaptic, paracrine, and endocrine communications release chemical messengers. A hormone is a chemical that is secreted into the interstitial fluid and is carried by the fluid or bloodstream to other cells.

Summary Introduction

To describe:

The pathway by which endocrine hormones move from secreting cells to target cells, often in far- distant parts of the body.

Introduction:

The endocrine hormones are released by the endocrine glands directly to the cells. An endocrine gland includes a cluster of cells whose function is hormone secretion. For example: pituitary and thyroid glands.