definition: Any of the distinct types of materials of which animals or plants are made, consisting of specialized cells and their products.

Four Types of Tissues

Epithelial tissue covers body system and forms the lining for internal cavities. Functions are protection, secretion, absorption, and filtration.

Connective tissue is the most abundant tissue and widely distributed. Functions are support, anchor and connect various parts of the body.

Muscle tissue has three different types: main functons are sensation, support, contraction , covering surfaces, and absorption.

skeletal voluntary type of muscle tissue that is used in the contraction of skeletal parts.

smooth found in the walls of internal organs and blood vessels. It is an involuntary type.

cardiac found only in the walls of the heart and is involuntary in nature.

Nervous responsible for carrying out all the informational signaling in our bodies. Main functions are Sensory input, Integration, Controls of muscles and glands, Homeostasis, and Mental Activity.


Epithelial tissue: cell shape and arrangements.

Connective tissue: holds body together.

Muscular tissue: skeletal or cardiac muscle.

Nervous tissue: neurons and neuroglia.

Specialization of Epithealia

1. Lateral cell surfaces.

2. Maintain close cell-to-cell contact and form covering sheets.

3. Epithelium structurally and functionally polarized to increase efficiency of absorption and transport.

Where the Four tissues Are found

Epithelial- outer layer of the skin, lining of lungs, kidney tubules, and the inner surfaces of the digestive system.

Connective- between your muscles, bones, and joints.

Muscular- almost anywhere in the body, most are attached to bones.

Nervous- found everywhere in your body, brain and spinal cord.

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