Histology Lab Practical 1

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Maraskiewicz

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Quizzes Created: 1 | Total Attempts: 583

Questions: 20 | Attempts: 583 | Updated: Mar 21, 2023

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1.

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Explanation
Simple squamous epithelium is a type of tissue that is composed of a single layer of flat cells. It is found in areas where filtration or diffusion is important, such as the lining of blood vessels and air sacs in the lungs. The cells are thin and allow for easy passage of substances through them. This type of epithelium is well-suited for areas where rapid exchange of materials is necessary.

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2.

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3.

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Simple columnar epithelium is a type of tissue found in the lining of the digestive tract, where it provides protection and absorption. It consists of tall, narrow cells that are closely packed together and arranged in a single layer. This type of epithelium is characterized by its column-like shape and the presence of goblet cells, which secrete mucus. Simple columnar epithelium is well-suited for functions such as nutrient absorption and secretion due to its tall and tightly packed cells.

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4.

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Pseudostratified columnar epithelium is a type of tissue found in the respiratory tract. It appears to have multiple layers of cells, but in reality, all cells are attached to the basement membrane. This epithelium is specialized to secrete mucus and move particles, such as dust or pathogens, out of the respiratory system. It is characterized by the presence of cilia on the surface of the cells, which helps in the movement of mucus. Pseudostratified columnar epithelium is commonly found in the trachea and bronchi, where it plays a crucial role in protecting the lungs from foreign substances.

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5.

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6.

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Explanation
Stratified columnar epithelium is a type of tissue that consists of multiple layers of column-shaped cells. It is found in certain areas of the body that require protection and secretion, such as the male urethra and parts of the digestive system. The stratified arrangement allows for increased durability and protection against mechanical stress. The columnar shape of the cells enables them to secrete mucus and other substances more efficiently.

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7.

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8.

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Explanation
Mesenchyme refers to a type of embryonic connective tissue that is characterized by its ability to differentiate into various types of cells, including muscle, bone, and blood cells. It is found in the early stages of development and plays a crucial role in the formation of organs and tissues. Mesenchyme is derived from the mesoderm layer of the embryo and is important for the proper development and growth of the body.

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9.

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Areolar connective tissue is a type of loose connective tissue that is found throughout the body. It is composed of a gel-like substance called ground substance, which contains various types of cells and fibers. Areolar connective tissue provides support and elasticity to organs and tissues, as well as facilitates the movement of nutrients and waste products. It also plays a role in immune response and inflammation.

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10.

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Adipose connective tissue is a type of connective tissue that is primarily composed of adipocytes, or fat cells. It functions to store energy in the form of fat and provides insulation and cushioning for the body. Adipose tissue is found throughout the body, but is most abundant beneath the skin, around organs, and in bone marrow. It is characterized by large, empty-looking cells that are filled with lipid droplets. Adipose tissue plays a crucial role in maintaining energy balance and regulating body temperature.

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11.

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Reticular connective tissue is a type of connective tissue that is composed of reticular fibers, which are thin and delicate collagen fibers. These fibers form a network or mesh-like structure that provides support and strength to various organs and tissues. Reticular connective tissue is commonly found in the lymph nodes, spleen, bone marrow, and liver, where it helps to filter and support the functioning of these organs. It also acts as a framework for immune cells and blood vessels. Overall, reticular connective tissue plays a crucial role in maintaining the structural integrity and function of the organs it is present in.

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12.

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Dense regular connective tissue refers to a type of connective tissue that is composed of collagen fibers arranged in a parallel fashion. This arrangement provides strength and resistance to tensile forces in a specific direction. It is found in tendons, ligaments, and aponeuroses, which are structures responsible for connecting muscles to bones, bones to bones, and muscles to muscles, respectively. The collagen fibers in dense regular connective tissue are densely packed, giving it a dense appearance. This tissue type is characterized by its regular arrangement of collagen fibers, which distinguishes it from other types of connective tissue.

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13.

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Explanation
Dense irregular connective tissue is a type of connective tissue that is composed of collagen fibers arranged in a random or irregular pattern. It provides strength and support to various organs and structures in the body. This type of tissue is found in areas that require resistance to tension and stretching, such as the dermis of the skin, the capsules of organs, and the protective coverings of nerves and blood vessels. It helps to maintain the structural integrity of these tissues and provides flexibility and durability.

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14.

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Explanation
Elastic connective tissue is a type of connective tissue that contains elastic fibers, which allow it to stretch and recoil. It is found in various parts of the body, such as the lungs, blood vessels, and skin. This tissue provides flexibility and elasticity to these structures, allowing them to withstand stretching and bending without tearing or damage.

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15.

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16.

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Explanation
Elastic cartilage is a type of connective tissue found in the human body. It is characterized by its flexibility and elasticity, which is due to the presence of elastic fibers within the cartilage matrix. This type of cartilage is commonly found in structures that require both support and flexibility, such as the external ear, epiglottis, and eustachian tube. Elastic cartilage provides shape and structure to these body parts while allowing them to bend and stretch.

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17.

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Osseous connective tissue refers to bone tissue. It is composed of specialized cells called osteocytes, which are embedded in a matrix made up of collagen fibers and calcium salts. This tissue provides support, protection, and strength to the body. It also plays a crucial role in mineral storage, blood cell production, and calcium homeostasis.

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18.

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Interphase is the longest phase of the cell cycle where the cell prepares for division by growing in size, replicating its DNA, and synthesizing proteins. It is a crucial stage as it ensures that the cell has enough nutrients and energy to divide successfully. During interphase, the cell carries out its normal functions and prepares for the next stages of the cell cycle, including mitosis or meiosis.

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19.

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20.

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