A sensory receptor, or sense organ, is the part which responds to a stimulus in the internal or external environment of an organism. It is the input to the sensory system. In response to stimuli the sensory receptor fires off a nerve fibre which goes to the central nervous system.
In order to detect changes in the environment organisms need receptors. Organisms have various receptors, ranging from simple light or touch sensitive cells to complex nervous systems.
Receptors are generally specialised for the detection of a specific type of stimulus.
Parietal lobe
The parietal lobe is a part of the brain positioned above the occipital lobe and behind the frontal lobe.
The parietal lobe brings together information from different senses, particularly spatial sense and navigation. For example, it uses input about touch, balance and the visual system. This enables the parietal cortex to map seen objects in relation to the body (into 'body coordinate positions'). This makes it possible for a person to reach out and handle objects.
The name derives from the overlying parietal bone, which is named from the Latin "pariet-", = 'wall'.
Frontal lobe
The frontal lobe is an area in the brain of humans and other mammals, at the front of each cerebral hemisphere. It is in front of the parietal lobe and above and in front of the temporal lobes.
The frontal lobes takes action based on sensory information (sight, sound, touch) from the three rear areas of the cerebrum. The action is moderated by the influence of the pre-frontal cortex. The system is a delicate balance between the need to satisfy urges from the most ancient parts of the brain, such as hunger, self-defence and sex, with the need to act in a way which is socially acceptable.
The precentral gyrus, forming the back of the frontal lobe, contains the primary motor cortex. This controls voluntary movements of specific body parts.
For many years, many scientists thought that the frontal lobe was comparatively larger in humans than in other primates. They thought that this was an important feature of human evolution and was the main reason why human cognition is different from that of the other primates.
However, this view has been challenged by later research. Magnetic resonance imaging was used to find the volume of the frontal cortex in humans, all living ape species and several monkey species. The human frontal cortex is "not" relatively larger than the cortex in the other great apes, but it is relatively larger than the frontal cortex in the lesser apes and the monkeys.
Temporal lobe
The temporal lobe is a region of the cerebral cortex that is under the Sylvian fissure on both cerebral hemispheres of the mammalian brain.
The temporal lobe is involved in auditory perception and is home to the primary auditory cortex. It is also important for the processing of semantics (meaning) in both speech and vision. The temporal lobe contains the hippocampus and plays a key role in the formation of long-term memory.
An area in the Sylvian fissure is the first place where auditory signals from the cochlea reach the cerebral cortex. This part of the cortex (primary auditory cortex) is involved in hearing. Other areas of the temporal lobes are involved in high-level auditory processing. In humans this includes speech, for which the left temporal lobe in particular seems to be specialized. Wernicke's area, which spans the region between temporal and parietal lobes, plays a key role (with Broca's area, which is in the frontal lobe). The functions of the left temporal lobe extends to comprehension, naming, verbal memory and other language functions.
The underside of the temporal lobes do high-level visual processing of faces and scenes. Front parts of this area are involved in object perception and recognition.
Deep inside the medial temporal lobes lie the hippocampus, which is essential for memory function – particularly the transfer from short to long term memory and control of spatial memory and behaviour.
The Little Drummer Boy
"The Little Drummer Boy" is a very popular Christmas carol. It was recorded in 1955 by the Trapp Family Singers. It was made more popular three years later by the Harry Simeone Chorale. This song has been covered by others, including Johnny Mathis, Johnny Cash, Bing Crosby and Rosemary Clooney throughout the years.
Ex nihilo
Creatio ex nihilo is an idea found in certain faiths. It means that a creator god created the world, "from nothing", without any conditions. It is the opposite of creatio ex materia.
Cochlea
The cochlea is the auditory portion of the inner ear. It is a spiral-shaped cavity in the bony labyrinth, making 2.5 turns around its axis.
A core component of the cochlea is the Organ of Corti, the sensory organ of hearing, which is distributed along the partition separating fluid chambers in the coiled tapered tube of the cochlea.
The name is from the Greek κοχλίας "kokhlias" ("snail, screw"), from κόχλος "kokhlos" ("spiral shell"). This is in reference to its coiled shape: the cochlea is coiled in most mammals, monotremes being the exceptions.
Limit (roller coaster)
Limit is an inverted roller coaster at Heide-Park Soltau, Germany. It is a standard "Suspended Looping Coaster" built by Dutch roller coaster builder Vekoma and opened in 1999. Limit has 5 inversions, has a length of 689 meter, a maximum speed of 80 kilometers per hour. One round takes 1 minute and 36 seconds.
Limit has 2 trains with each 10 cars. 1 car can hold 2 riders, which gives a total of 20 riders per train. The maximum capacity is 1040 riders per hour.
Survivor Series (2011)
Survivor Series (2011) is the 12th Pay-Per-View (PPV) of 2011. It is also the 25th edition of Survivor Series. This PPV will take place on November 20, 2011 at the Madison Square Garden in New York City, it is the third time that the Madison Square Garden hosts this Pay-Per-View after the 1996 and 2002 edition of Survivor Series. So far, four matches have been announced by the WWE for the event.
Survivor Series will feature professional wrestling matches involving different wrestlers from pre-existing scripted feuds, plots, and storylines that develop on WWE's television programs. Wrestlers portray villains or heroes as they follow a series of events that build tension and culminate into a wrestling match or series of matches.
Super Size Me
Super Size Me is a 2004 American documentary movie directed by and starring Morgan Spurlock. It is about an experiment where Spurlock ate nothing but food from McDonald's for thirty days. He ate at McDonald's three times a day, eating an average of 5,000 kcal per day. This experiment lasted from February 1 to March 2, 2003. This experiment was bad for his own physical and psychological health.
During the experiment, Spurlock gained 24½ lbs., had a 13% body mass increase, his cholesterol level went to 230, and he had mood swings, sexual dysfunction, and had fat accumulation in his liver. After the experiment, he recovered with a vegan diet his then-future wife prepared for him (she is a gourmet vegan cook).
This experiment was conducted because of the obesity epidemic in the United States, and because of a case in which two teenage girls sued McDonald's who claimed they became obese as a result of eating food from McDonald's.
Spurlock also uses this movie to criticize McDonald's and the fast food industry, ranging from the sale of unhealthy food to corporate marketing and to the personal profit of these organizations.
Brussels Airport
Brussels Airport (IATA "BRU") is the national airport of Belgium. It is the biggest airport in Belgium. It has more than 17 billion travelers each year. It is 18 km from Brussels, the capital of Belgium.
The airport is used by a lot of airlines such as Brussels Airlines, Thomas Cook Airlines and Jetairfly.
On 22 March 2016, two bombs exploded at the airport.