Simple columnar epithelia are tissues made of a single layer of long epithelial cells that are often seen in regions where absorption and secretion are important features. The cells of this epithelium are arranged in a neat row with the nuclei at the same level, near the basal end. In a cross-section of the organ, these cells appear like thin … Read more
Sensory receptors are primarily classified as chemoreceptors, thermoreceptors, mechanoreceptors, or photoreceptors. LEARNING OBJECTIVES Differentiate among the types of stimuli to which receptors respond KEY TAKEAWAYS Key Points Chemoreceptors detect the presence of chemicals. Thermoreceptors detect changes in temperature. Mechanoreceptors detect mechanical forces. Photoreceptors detect light during vision. More specific examples of sensory receptors are baroreceptors, … Read more
“You” in Spanish PronounNumber and Formality vos singular and formal or informal usted singular and formal vosotros plural and informal ustedes plural and formal or informal That being so, how many different ways can you say you all in Spanish? two ways Else, what is the plural of you in Spanish? We. Vosotros/as. You (plural, informal) Ustedes. You (plural, formal) So anyway, what are … Read more
Before going to learn about solving quadratic equations, let us recall a few facts about quadratic equations. The word “quadratic” is originated from the word “quad” and its meaning is “square”. It means the quadratic equation has a variable raised to 2 as the greatest power term. The standard form of a quadratic equation is … Read more
Use the slope formula to find the slope of a line given the coordinates of two points on the line. The slope formula is m=(y2-y1)/(x2-x1), or the change in the y values over the change in the x values. The coordinates of the first point represent x1 and y1. The coordinates of the second points … Read more
Guncotton or nitrocellulose (also known as trinitrocellulose and cellulose nitrate)is a mild explosive, used in rockets, propellants, printing ink bases, leather finishing, and celluloid (a mixture of nitrocellulose and camphor; first used to manufacture billiard balls). It is prepared by treating ordinary cotton with a mixture of concentrated nitric and sulfuric acids, which replaces the hydrogen atom on the OH groups … Read more
How to Determine the Domain and Range of an Inverse Trigonometric Function?In this section, you will learn how to find the domain and range of inverse trigonometric functions. To make you understand the domain and range of an inverse trigonometric function, we have given a table that clearly says the domain and range of inverse … Read more
The terms scientists use to describe what they study can seem arbitrary. It may seem as though the words they use are only words with nothing else to them. But studying the terms scientists use to describe various phenomena lets you better understand the meaning behind them. Newton’s law of universal gravitation demonstrates the universalizable, … Read more
Comparing numbers is a basic concept that we have learned in our primary classes. When we have two numbers or quantities to compare, then we use three basic symbols, they are: Equal to (=) Greater than symbol (>) Less than symbol (<) Let us learn in this article, how to compare two numbers and what sign … Read more
A nonlinear function is most easily described as whatever is not a linear function. Learn what a linear function is and be able to define a nonlinear function; using examples, learn how to distinguish between the two. What are Linear Functions? The easiest way to define a nonlinear function is as a function that is … Read more