The olfactory lobe, or olfactory bulb, is the structure within the brain that receives neural input from the nasal cavity, thus processing the sense of smell, according to Encyclopedia Britannica. The nasal cavity's smell receptors are connected to the olfactory bulb through axons.Know More
The olfactory bulb is located in the front section of the brain in many animals, but in humans it is located in the bottom portion. The cells within the nasal cavity detect odors in the form of chemical particulates within the air and send the received information to the olfactory bulb. The olfactory bulb is believed to tell odors apart, amplify sensitivity to odors, identify important odors and send the information to higher level areas of the brain for further information processing, according to Wikipedia. While, from its structure, it appears that the olfactory bulb could exclusively perform all of these tasks, scientists are unsure whether it is the sole structure within the brain that performs these functions.
The olfactory bulb is comprised of five layers: the granule cell layer, the internal plexiform layer, the mitral cell layer, the external plexiform layer and the glomerular layer. These layers are listed in order from internal to external, and each perform specific tasks related to the neural processing of odors, according to Wikipedia,Learn more in Organs
The main function of the olfactory system, which is also known as the sense of smell, is to detect and perceive the chemicals that are floating in the air. The mucus membranes work to dissolve the chemicals in the air and these molecules carry the chemicals to the olfactory receptors in the brain.Full Answer >
The function of the brain’s frontal lobe includes movement, decision making, problem solving, planning, impulse control, memory and high order functions. The brain’s frontal lobe is one of the four main lobes of the cerebral cortex; they are situated at the front part of the cerebral cortex.Full Answer >
An infiltrate of the lower left lobe refers to pulmonary edema, which is the filling of fluid in the lobe or filling by any other substance such as cells (tumors) and inflammatory emissions; whereas an atelectasis of the left lower lobe refers to its collapse, either complete or partial. The visual impression of the atelectasis alone makes it impossible to distinguish from an infiltrate.Full Answer >
The spleen serves two major functions in humans. First, it plays an important role in adaptive immunity; groups of B and T lymphocytes reside in the spleen. These white blood cells produce antibodies, fight bacteria and viruses and destroy infected cells. Second, the spleen holds a third of the body's platelets in reserve. If a person suffers an internal hemorrhage, the spleen releases these platelets into the circulation.Full Answer >