GENERAL HISTOLOGY

CONNECTIVE TISSUE GLAND

CONNECTIVE TISSUE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
All connective tissue arises from ____
A
mesenchyme
B
extracellular matrix
C
epithelium
D
fibrocartilage
Explanation: 

Detailed explanation-1: -Mesenchyme directly gives rise to most of the body’s connective tissues, from bones and cartilage to the lymphatic and circulatory systems. Furthermore, the interactions between mesenchyme and another tissue type, epithelium, help to form nearly every organ in the body.

Detailed explanation-2: -The greatest amount of bulk of the body is composed of the cells forming tissues that are considered “soft” tissues or connective tissues. These are embryologically derived from the mesoderm. Hence, they are often called “mesenchymal” tissues.

Detailed explanation-3: -Connective tissue (also called fibrous tissue) is one of the four primary types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. It develops from the mesenchyme, derived from the mesoderm, the middle embryonic germ layer.

Detailed explanation-4: -All connective tissue is derived from mesoderm, the middle germ cell layer in the embryo. Connective tissue is made up of fibers forming a framework and support structure for body tissues and organs.

Detailed explanation-5: -Mesenchyme is an embryonic precursor tissue that generates a range of structures in vertebrates including cartilage, bone, muscle, kidney and the erythropoietic system. Mesenchyme originates from both mesoderm and the neural crest, an ectodermal cell population, via an epithelial to mesenchymal transition (EMT).

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