A client is given vasopressin by the nurse, who remembers that it is an anti-diuretic hormone.
Vasopressin would be an antidiuretic hormone; as its other name implies, it reduces water outflow by the kidneys by boosting water reabsorption inside the collecting ducts. Vasopressin also significantly narrows the arterioles all over the body.
Because it causes blood vessels to contract, the antidiuretic hormone also is known as vasopressin.
The hypothalamus produces vasopressin, also known as antidiuretic hormone (ADH), arginine vasopressin (AVP), and other nonapeptides. It has been shown by science that it is crucial for maintaining the body's osmotic equilibrium, controlling blood pressure, maintaining salt homeostasis, and maintaining renal function.
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Definition: full of or shedding light; bright or shining, especially in the dark
Examples of objects: lamps,lightbulbs,candles,fire,etc...
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<h2><u>
What's a Cell?</u></h2>
A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes. Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life. Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane. Also present in the cytoplasm are several biomolecules like proteins, nucleic acids and lipids. Moreover, cellular structures called cell organelles are suspended in the cytoplasm.
<h2><u>Characteristics of Cells</u></h2>
Following are the various essential characteristics of cells:
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Cells provide structure and support to the body of an organism.
- The cell interior is organised into different individual organelles surrounded by a separate membrane.
- The nucleus (major organelle) holds genetic information necessary for reproduction and cell growth.
- Every cell has one nucleus and membrane-bound organelles in the cytoplasm.
- Mitochondria, a double membrane-bound organelle is mainly responsible for the energy transactions vital for the survival of the cell.
- Lysosomes digest unwanted materials in the cell.
- Endoplasmic reticulum plays a significant role in the internal organisation of the cell by synthesising selective molecules and processing, directing and sorting them to their appropriate locations.
<h2><u>Cell Structure</u></h2>
The cell structure comprises individual components with specific functions essential to carry out life’s processes. These components include- cell wall, cell membrane, cytoplasm, nucleus, and cell organelles. Read on to explore more insights on cell structure and function.
<h2><u>Cell Membrane</u></h2>
- The cell membrane supports and protects the cell. It controls the movement of substances in and out of the cells. It separates the cell from the external environment. The cell membrane is present in all the cells.
- The cell membrane is the outer covering of a cell within which all other organelles, such as the cytoplasm and nucleus, are enclosed. It is also referred to as the plasma membrane.
- By structure, it is a porous membrane (with pores) which permit the movement of selective substances in and out of the cell. Besides this, the cell membrane also protects the cellular component from damage and leakage.
- It forms the wall-like structure between two cells as well as between the cell and its surroundings.
- Plants are immobile, so their cell structures are well-adapted to protect them from external factors. The cell wall helps to reinforce this function.
<h2><u>Cell Wall</u></h2>
- The cell wall is the most prominent part of the plant’s cell structure. It is made up of cellulose, hemicellulose and pectin.
- The cell wall is present exclusively in plant cells. It protects the plasma membrane and other cellular components. The cell wall is also the outermost layer of plant cells.
- It is a rigid and stiff structure surrounding the cell membrane.
- It provides shape and support to the cells and protects them from mechanical shocks and injuries.
<h2><u>Cytoplasm</u></h2>
- The cytoplasm is a thick, clear, jelly-like substance present inside the cell membrane.
- Most of the chemical reactions within a cell take place in this cytoplasm.
- The cell organelles such as endoplasmic reticulum, vacuoles, mitochondria, ribosomes, are suspended in this cytoplasm.
<h2><u>Nucleus</u></h2>
- The nucleus contains the hereditary material of the cell, the DNA.
- It sends signals to the cells to grow, mature, divide and die.
- The nucleus is surrounded by the nuclear envelope that separates the DNA from the rest of the cell.
- The nucleus protects the DNA and is an integral component of a plant’s cell structure.
<h2><u>
Functions of Cell</u></h2>
A cell performs these major functions essential for the growth and development of an organism. Important functions of cell are as follows:
- Provides Support and Structure
- Facilitate Growth Mitosis
Allows Transport of Substances
Keep the plastered body part raised to prevent swelling, especially for the first 48 hours. On average, plaster casts stay on for about six weeks, depending on your age, general health and type of fracture.
- Risk of blood clots and consequences like heart attack and stroke can increase if you have too many blood vessels because they make blood thick and sluggish.
<h3>What is erlotinib used for?</h3>
- Erlotinib is prescribed to individuals with specific aberrant epidermal growth factor (EGFR) gene mutations for the treatment of metastatic (cancer that has already spread) non-small cell lung cancer.
- So as per the context, seeing the patient being given the erlotinib we can predict that the patient could be suffering from cancer.
- Healthy human beings have apoptosis which means programmed cell death.
- But in the patients suffering from cancer, this process of apoptosis is disturbed and the formation of blood vessels will be in high number or uncontrolled.
<h3>When cancer has spread to blood vessels, what does that mean?</h3>
- Cancer that has spread to other parts of the body from the main site, or where it first appeared, is referred to as metastatic cancer. When cancer cells separate from a tumor, they can move through the circulation or lymphatic system to other areas of the body.
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