1. Atom – the smallest unit of an element that displays the same properties as the element, for example, hydrogen. 2. Atomic number – The number of protons in the nucleus of an atom; for example, the atomic number for helium is 2. 3. Chemical formula – A short form used to represent a molecule;…
Ventricles= expansions of the brain’s central cavity Filled with CSF, lined with ependymal cells Continuous with each other, central canal, and spinal cord 1st/2nd= paired lateral ventricles (lie in cerebral hemispheres) [separated by septum pellucidum– transparent wall] 3rd ventricle lies within diencephalon [connected to each lateral ventricles by interventricular foreamen] In midbrain is central cavity…
Purpose The purpose of this lab was to evaluate the increase in velocity with time during a free fall. Also, to determine the position from the start of the fall. Hypothesis It is hypothesized that the object that is dropped will endure gradual change acceleration in acceleration. The acceleration for the object in the velocity-time…
Richard James invented the Slinky along with his wife Betty. The couple was fearful that there would be no interest in such an ordinary-looking toy. They were worried enough to give their own friend a dollar to buy one! After their first demonstration, they sold around 400 Slinkys. Slinkys were a hit. The Slinky can…
Diencephalon: forms central core of forebrain, surrounded by cerebral hemispheres. Made of 3 paired structures: 1) thalamus, hypothalamus, and epithalamus. Thalamus: egg-shaped (known as the inner room) has midline connection called interthalamic adhesion ***EVERY part of the brain that communicated with the cerebral cortex must relay its signals through a nucleus of the thalamus. Hypothalamus:…
A conductor is a substance in which electrons can move freely from one atom to another. An insulator is a substance in which electrons cannot move from one atom to another. Common Conductors and Insulators Good Conductors Fair Conductors Good Insulators (Non-conductors) Silver Carbon Oil Copper Human body Fur Gold Moist human skin Silk Aluminum…
There has been an extensive history in the development of In Vitro Fertilisation. This is evident in the scientific discoveries and advances in medical procedures. In addition, the church and society have made scientific contributions to the debate concerning In Vitro Fertilisation techniques. The discovering of human ova and sperm during the 1800’s provided a…
Many of you know her as Dorothy from the Wizard of Oz. But there was much more trouble behind Judy Garland than just a pair of ruby slippers. At the young and innocent age of 17, she starred in her 7th film, “The Wizard of Oz”. The same year she had her hand and shoe…
A volcano is a vent in the earth from which molten rock and gas erupt. The molten rock that erupts from the volcano forms a hill or mountain around the vent. The lava may flow out as a viscous liquid or it may explode from the vent as solid or liquid particles. Kinds of Volcanic…
Dementia is an organic brain syndrome which results in global cognitive impairments. Dementia can occur as a result of a variety of neurological diseases. Some of the more well known dementing diseases include Alzheimer’s disease (AD), multi-infarct dementia (MID), and Huntington’s disease (HD). Throughout this essay the emphasis will be placed on AD (also known…
The human brain is a very complex and elaborate organ. There are presently countless ongoing studies that are attempting to map out this intricate system. The task is quite complicated due to the numerous components that are a part of the brains composition. One aspect of the brain that is of much interest is the…
Psychiatrist Berney Goodman, writes, “Hypochondria is an emotional disorder involving unremitting fears of illness and somatization symptoms that last for more than six months and cause significant disability” (34). Hypochondria are much more psychological and people who suffer from don’t realize the disease is, as many may inaccurately describe it, “all in their heads.” Hypochondria…
Thousands of people all over the world suffer daily from cancer. As technology improves, medical advances are made to prolong the life of cancer patients at all costs. Treatments such as chemotherapy and radiology have become increasingly accepted as the normal care for cancer. While technology concentrates on treating the cancer and remedying the scientific…
As more people become aware of what medical procedures are taking place in the world, it is only natural that there will always be controversy. Lives are full of choices, and no matter what you choose there are always people who do not think that your choice was the right one to make. As more…
Copper is derived from the Latin word cuprum, which means “from the island of Cyprus”. Copper has been put to use for at least 11,000 years according to archaeologists. Ancient people found copper in “nuggets and masses on the surface of the Earth, adjacent to streams, in the walls of canyons” (Lugaski, 1997, n.p.). Throughout…
If sit-ups are not giving you the taut tummy you desire. If you’ve got a little too much flab or excess skin in your abdomen that won’t diminish with diet or exercise, you may want to consider liposuction or an abdominoplasty, popularly referred to as a “tummy tuck.” Let me explain the differences in the…
In insects, the regulation of water balance is of critical importance in maintaining homeostasis [1]. Homeostasis is the state of relative stability of the internal environment of an organism. One of the main processes involved in the control of water balance is diuresis. Diuresis is the elimination of excess water in the form of urine. …
Prions are proteins that are found in the nerve cells of all mammals. Numerous prions are in each nerve cell, but no one knows for sure what the prion protein does. The brain of a human or animal infected with a prion “disease” has many abnormally-shaped prions. One hypothesis states that when a person or…
There are three measures to central tendency: the mean, median, and mode. These measures relate in different ways to different distributions either skewed or normal. Intelligence tests can also be measured using central tendency principles as well each has a distribution. Intelligence tests also are biased in material and need regular updates. The mean is…
Today’s modern cheetahs can run 60 mph to catch prey. Their ancestors could originally only run 20 mph. There was selective pressure in the environment of cheetahs that demanded for faster cheetahs to catch more prey because there was a battle for survival. There was variation in the ancestral population. Some cheetahs could run faster…