Histology The microscopic study of tissue. It is important to know the structure and function of tissues In order to understand how individual cells are organized And how tissues work to form organs and organ systems.

Learner Objectives To analyze the relationships between the structures and functions of tissues. To evaluate the cause and effect of disease and trauma on the structure and function of tissues.

3 types are classified by structure and function: Muscle Tissue Muscle tissue is contractile, and through contractions is designed to move the body, pump blood, and decrease the size of hollow organs. 3 types are classified by structure and function: Skeletal Cardiac Smooth

Table 4.3

Fig. 4.11

Fig. 4.12

Fig. 4.13

Conducts electrical signals called “action potentials” Nervous Tissue Conducts electrical signals called “action potentials” Neurons – nerve cells – composed of 3 parts: cell body, dendrites, and axons. Types of neurons: Multipolar Bipolar Unipolar Support cells – support cells of the brain, spinal cord, and peripheral nerves. Also form myelin sheaths around axons and produce cerebrospinal fluid. Schwann cells neuroglia

Fig. 4.14