Name four major types of cells in the human body and describe their difining characteristics?

Answer 1

Neurons:transmit information in the form of electrical signals and have branches that receive or send signals

Muscle: elongated in shape, contract to generate mechanical force.

Epithelial: sheetlike layer of noncellular material;varies in shape, prevents material from one side to another. an example is lining of the lungs.

Connective: Includes blood cells, bone cells, fat cells. Provides physical support for other structures.

Answer 2

1. Neurons: These cells transmit electrical signals throughout the body and have long extensions called axons and dendrites.
2. Red Blood Cells: Responsible for transporting oxygen from the lungs to body tissues, they lack a nucleus and have a biconcave shape.
3. White Blood Cells: Part of the immune system, they help fight infections and are divided into subtypes like lymphocytes and neutrophils.
4. Muscle Cells: Specialized for contraction and movement, they contain abundant proteins like actin and myosin for generating force.