JoVE Science Education > Tissues of the Human Body

Chapter 8

Tissues of the Human Body

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Tissues are a group of cells that share a common embryonic origin. Microscopic observation reveals that the cells in a tissue share morphological features ...

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Tejidos epiteliales y sus funciones

Epithelial tissues are large sheets of cells covering all of the surfaces of the body. These surfaces can be internal or external, for example, skin, ...

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Moléculas de adhesión celular: tipos y funciones

Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical ...

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Descripción general de las uniones célula-célula

The complex three-dimensional arrangement of cells in any multicellular organism is defined and maintained by interactions of cells with each other and ...

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Clasificación de los tejidos epiteliales: descripción general

Epithelial tissues are classified according to the shape of the cells and the number of cell layers formed. Cell shapes can be squamous (flattened and ...

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Clasificación de los tejidos epiteliales: epitelio simple

Simple epithelium consists of a single layer of cells that lines body cavities and blood vessels. The shape of the cells in the epithelium reflects the ...

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Clasificación de los tejidos epiteliales: epitelio estratificado

Stratified epithelium consists of several stacked layers of cells. They provide the durability to withstand constant physical and chemical attacks. ...

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Clasificación de los tejidos epiteliales: epitelio glandular

The glandular epithelium is made of one or more epithelial cells modified to synthesize and secrete chemical substances. Glandular epithelia can be ...

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Glándulas Exocrinas: Glándulas unicelulares y pluricelulares

Exocrine glands are classified as unicellular and multicellular. The unicellular glands are scattered single cells, such as goblet cells, found in the ...

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Glándulas exocrinas: métodos de secreción

Exocrine glands are those that release their secretions through ducts. Based on their mode of secretion, they can be classified into merocrine, apocrine, ...

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Glándulas exocrinas: tipos de secreciones

Exocrine glands produce and release a variety of glandular products. Exocrine glands can be classified into serous, mucous, or mixed types based on their ...

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Introducción a los tejidos conectivos

Connective tissues are one of the four main tissue types in humans that are extensively present in the body. They are characterized by cells embedded in ...

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Funciones de los tejidos conectivos

Connective tissues perform a broad range of functions in the body. Their primary function is to connect and link different tissues in the body and act as ...

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Clasificación de los tejidos conectivos

The connective tissues have different properties and functions in the human body. They are broadly categorized into proper, supporting, or fluid ...

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Tejidos conectivos embrionarios

During early development, the embryo forms two types of connective tissues— the mesenchyme and mucoid connective tissue. The mesenchyme is the first ...

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Descripción general de los tejidos conectivos adecuados

Connective tissue proper is a class of connective tissue that encompasses all mature connective tissues except bone, cartilage, blood, and lymph. This ...

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Matriz Extracelular

Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are ...

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Fibras de tejido conectivo y sustancia fundamental

One of the significant functions of connective tissue is connecting tissues and organs. Unlike epithelial tissue that is composed of cells closely packed ...

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Tejido conectivo suelto

Loose connective tissue is found between many organs. Its main function is to absorb shock and bind tissues together. It also allows water, salts, and ...

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Tejido conectivo denso

Dense connective tissue contains more collagen fibers than loose connective tissue. As a consequence, it displays greater resistance to stretching. There ...

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Capas de tejido conectivo propiamente dichas

Fascia, a thin layer of fibrous connective tissue, is distributed throughout the body. It demarcates and forms a supportive covering over skeletal ...

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El hueso como tejido conectivo de soporte

Bone tissue forms the internal skeleton of vertebrate animals, providing structure to the body. Bone Matrix Bone, or osseous tissue, is a connective ...

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Membranas tisulares

A tissue membrane is a thin layer of cells that covers the outside of the body, the organs, internal passageways that lead to the exterior of the body, ...

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Tejidos conectivos líquidos: sangre y linfa

Blood and lymph are fluid connective tissues. They contain cells, also known as formed elements, circulating in a liquid extracellular matrix, the plasma. ...

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Lesión tisular: inflamación y reparación

Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among ...

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El efecto del envejecimiento en los tejidos

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and ...