Answer:
Endothelium provides a slick surface lining all hollow cardiovascular organs.
Explanation:
Endothelium is a layer made of cells that lines the interior surface of the entire circulatory system from heart to the capillaries. It forms the interface between the blood in the lumen and the vessel wall.
It is a single celled thin layer of squamous cells. It is involved in fluid filtration, maintaining the the blood vessel tone, homeostasis, hormone trafficking and neutrophil recruitment. It is of mesodermal origin. It is aligned in the direction of fluid flow.
Epithelia are layers of cells that line body surfaces and organs. Different types of epithelia have specific functions and structures. Simple columnar epithelium, stratified squamous epithelium, pseudostratified columnar epithelium, and endothelium are all examples of epithelial tissues.
Epithelia are layers of cells that line body surfaces and organs.
Simple columnar epithelium is a single layer of rectangular cells, commonly found in areas of absorption and secretion.
Stratified squamous epithelium is several layers of squamous cells, providing protection against abrasion. Pseudostratified columnar epithelium appears layered but is actually a single layer of cells, often found in the respiratory system.
Endothelium is a type of epithelium that lines blood vessels, providing a smooth surface and allowing for the movement of blood cells.
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Answer:Normally because the flu virus doesn't last very long because your body is very used to the flu.
Answer:
ADHD is the Answer for this question
Answer:
Phagocytosis.
Statement 1 is true, Statement 2 is false, Statement 3 is false
1) Statement 1 is true. The fantasin gene will be transcribed at a high level when activators specific for control elements A, B, and C are present in the cell. These activators bind to the control elements and enhance the transcription of the fantasin gene.
2) Statement 2 is false. While general transcription factors are necessary for transcription in general, the specific control elements for each gene determine the level of transcription. So, the presence of general transcription factors alone does not guarantee high levels of transcription for the fantasin and imaginin genes.
3) Statement 3 is false. The imaginin gene will not be transcribed at a high level when repressors specific for the imaginin gene are present in the cell. Repressors bind to control elements and inhibit transcription, leading to reduced levels of transcription for the imaginin gene.
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Answer:
ATP acts as source of energy in several cellular and physical processes happening within the body.
Explanation:
The major functions of Adenosine Tri Phosphate (ATP) are –
a) ATP provides energy for cellular metabolic processes.
b) ATP assists in active transportation of macromolecules across the cell against the concentration gradient.
c) ATP functions in both extra and intracellular signaling by releasing itself from synapses and thereby modulates calcium and cyclic AMP level inside the cell.
d) Maintain the structure of the cell
e) Provides energy for muscle contraction by binding to the myosin