10 Connective Tissue Flashcards
Visiting cells consist of _____, _____, and _____
Inflammatory macrophages, plasma cells, and leukocytes (white blood cells)
Cells that migrate to a site in response to stimulus and are more immunologically active
Inflammatory Macrophages
Cells that increase in number only from monocytes and cannot do local proliferation
Inflammatory Macrophages
TRUE or FALSE: If there is no stimulus, inflammatory macrophages will not be present in a tissue
TRUE
Cells that have strong basophilic cytoplasm, eccentric nuclei, and clumps of chromatin
Plasma Cells
These cells produces immunoglobulins or antibodies
Plasma Cells
Function by binding to an antigen and marking it for destruction
Antibodies
TRUE or FALSE: Plasma cells are capable of mitosis or reverting back to B cells
FALSE; Once they become plasma cells, they cannot go through mitosis or revert back to B cells
Plasma cells differentiate from _____
B Lymphocytes (B Cells)
Give the 5 types of leukocytes (white blood cells)
Neutrophils, Basophils, Eosinophils, Monocytes, Lymphocytes
TRUE or FALSE: In post-natal life, all leukocytes are produced in the bone marrow (except for the lymphocytes)
TRUE
Produced in the lymphoid tissues and organs such as the thymus, lymph nodes, spleen, and tonsils
Lymphocytes
Once in the connective tissue, leokocytes exhibit what kind of movement?
Amoeboid Movement
Give the 5 classification of connective tissue
Collagenous Connective, Adipose, Reticular, Elastic, Mucous Tissues
Most abundant extracellular fiber in collagenous connective tissue
Collagen Fiber (Collagen Type I)
Most abundant cell in collagenous connective tissue
Fibroblast
Collagen fibers arranged in a definite pattern and comprises tendons, ligaments, and fibrous membranes
Dense Regular Connective Tissue
Type of tissue wherein collagen fibers run in various directions (haphazard)
Dense Irregular Connective Tissue
Type of tissue that is highly vascular and is more cellular than dense connective tissue
Loose Connective Tissue
Predominant cell in adipose tissue
Adipocyte
Specialized cell that stores fat
Adipocyte
Represents the largest energy storage site, functions as thermal insulator, and serves as shock absorber
Adipose Tissue
TRUE or FALSE: In the lobules of adipose tissue, the adipocytes are supported mainly by collagen fibers
FALSE; Adipocytes are supported mainly by RETICULAR fibers (found in between adipocytes)
Stores fat in single vacuole, synthesizes and secrete leptin; found in visceral and subcutaneous areas
Yellow (White) Fat
Stores fat in numerous vacuoles, rich in mitochondria, and the main function is to produce heat
Brown Fat
Type of fat that is commonly seen in newborns. especially in the neck, back, and shoulders
Brown Fat
Connective tissues originated from which germ layer?
Mesoderm
What are the two compositions of a connective tissue?
Extracellular matrix and Cells
TRUE OR FALSE: The main component of the ground substance are proteoglycans.
FALSE (Main component = water, Main structural constituent = proteoglycans)
TRUE OR FALSE: The presence of sulfate and carboxyl groups make the ground substance acidic.
TRUE
What is the most abundant glyocosaminoglycan in the connective tissue?
Hyaluronic acid/Hyaluron
What is the most commonly occurring type of connective tissue?
Collagen fbers
Which type of collagen particularly makes up collagen fibers?
Type I
What is the precursor protein of a collagen fiber?
Procollagen
What makes up the core of elastic fibers?
Elastin
Which of the three fibers are abundant in structures with frequent stretching?
Elastic fibers
Reticular fibers are made up of which collagen type?
Type III
What type of cell in the connective tissue are known as multipotent stem cells?
Mesenchymal cells
What type of stem cell gives rise to any human cell, placental cell, or fetal membrane cells?
Totipotent
What type of stem cell can form any cell type of the body but cannot produce a human being?
Pluripotent
These are stellate (star-shaped) cells with delicate cytoplasmic processes and oval nuclei.
Mesenchymal cells
What is the most abundant cells in most connective tissues?
Fibroblasts
These are inactive fibroblasts which can aid in wound healing during appropriate conditions.
Fibrocytes
What are the specialized cell that stores lipids or fats in the cytoplasm?
Adipose cells/Adipocytes
What are the two solutions used to visualize adipocytes as grey or black globules?
Glutaraldehyde and Osmic acid
TRUE OR FALSE: Adipocytes are capable of mitosis.
FALSE
What cell contains chemical mediators of inflammation such as histamine, heparin, and proteases?
Mast cells
Macrophages are derived from what type of WBCs?
Monocytes
TRUE OR FALSE: Inflammatory macrophages are always present in a connective tissue.
FALSE (Inflammatory macrophages are present only when there is a stimulus, specifically an infection)
What are the most numerous cell type in the reticular tissue?
Reticular cells
What are the most abundant extracullular fiber in the reticular tissue?
Reticular fiber
The reticular tissue forms the ___ of the ___, ___, ___, ___ and, ___
stroma/supporting framework; liver, bone marrow, pancreas, lymph nodes and spleen
What is the predominant cell type in elastic connective tissue?
Fibroblast (in between elastic fibers)