Marijuana/Hashish is basically dried leaves, a flower, stem, and seeds from the hemp plant, Cannabis sativa. This plant encompasses a mind altering chemical known as del-9-tetrahydrocannabinol (THC) and other related compounds. Which is Inhibitory neurons that plays a significant role in regulating neural signals it’s near the dopamine presynaptic cell possibly reducing the amount of dopamine that sent to the synapse by releasing the neurotransmitter gaba inhibitory and Gaba signals as it alters in response to local the brain activity. By adjusting the amount of dopamine released through stimulated dopamine neurons endocannabinoids which are neurotransmitters that indirectly affect the dopamine signals by modifying the activity of other neurotransmitters like the gaba endocannabinoids similar to dopamine to bind specific receptor protein located on the surface of some cells depending on its current level of activity.…
Cones allow us to see color, they operate mostly in daylight and don’t pay as much attention to the amount of light as rods do. The rods and cones are connected to specialized neurons called bipolar cells, which in turn hook up with the ganglion cells. The ganglion cells lead out of the eye and their axons from the optic nerve, which is the messenger from an eye to the brain. After the nerve fibers leave the eye they separate and some cross to the other side of the head. The optic…
These channels are solely found in cones, also known as light detecting cells, whose role is to provide vision in bright light, such as color vision and fine resolution. (PANG) The impairment of cones results in achromatopsia. In contrast, the rods, which are contribute to vision in dim light are…
Lastly, scenario B fails to define the function of the photoreceptor cells correctly by proposing that rods are responsible for colored vision while cones are responsible for night vision. Rods are the most abundant photoreceptor cells in the retina and they work…
The retina is the part of your eye that contains the nerves needed for sight. In some people, this condition can be a sign of an increased risk of a stroke. A stroke can result in permanent vision loss or loss of other body functions.…
In non-competitive allosteric inhibition, inhibitor molecules bind to an enzyme at the allosteric site. Their binding induces a conformational change that reduces the affinity of the enzyme's active site for its substrate. The binding of this allosteric inhibitor changes the conformation of the enzyme and its active site, so the substrate is not able to bind. This prevents the enzyme from lowering the activation energy of the reaction, and the reaction rate is reduced.…
There are many different kinds of sensory receptors. Some are: thermoreceptors, chemoreceptors, photoreceptors, and mechanoreceptors. Thermoreceptors respond to heat energy. Chemoreceptors respond to chemical energy. Photoreceptors respond to light energy (such as rods and cones).…
This shows that Visual acuity changes depending on the location in the retina and could be influenced by factors which include: the receptive field size, distribution of photoreceptors and illumination. For an individual to view an object, they fixate and place the image of the object on the most sensitive part of the retina, fovea centralis to produce detailed vision. As shown in Figure 2, the fovea has a high number of cone receptors which produce high visual acuity and allows the individual to identify colour and light. A high visual acuity is due “to the 1:1 connection of a cone cell to bipolar cell to a single ganglion cell producing a small receptive field which produces high visual acuity at fixation [4]”. At the peripheral, there is a high rod density which produces low visual acuity and is due to retinal convergence of rods to a single bipolar cell, producing a larger receptive field which reduces visual acuity.…
When you don't have perfect vision, it's not considered a life threatening or even life altering condition. It just means you need a pair of prescription glasses. It is remarkable how two pieces of clear plastic or glass mounted on a frame, work so well at restoring one of the most important of your five senses. If only other problems could be remedied so easily. How do prescription glasses work?…
The eye is one of the significant special sensory organs that is responsible for vision. Through observation, we handled a cow’s eye and discerned our findings to our knowledge of a human’s eye. A cow’s eye has similarities, such as the overall layers of the eye like the sclera, choroid, and retina layer, to that of a human’s eye. Also the structures and organs contained within these layers. Also, we discovered many other anatomical structures that are much the same to a human's eye during the dissection.…
One cone lets you see one color (Science Line). While humans have three cones, insects have two (Science Line). Seeing color differently between people and insects proves that we see the world…
Dopamine Receptor D2 The D2 dopamine receptor has an extremely important function in the nervous system. The D2 receptor is metabotropic: it is coupled with a G-Protein linked receptor. This implies that a dopamine receptor is in the G protein-coupled receptor class. They are prominent in the vertebrae of the central nervous system.…
Depressants are one of the main drug category. They are used to experience euphoria or with other drugs to add to the other drugs’ high or to deal with their side effects. Depressants bring you down and suppress brain function, the effect of this is it will put you to sleep, relieve anxiety and muscle spasms, and prevent seizures. Other effects over a longer time can be depressants cause amnesia, leaving no memory of events that occur while under the influence, reduce your reaction time, impair mental functioning and judgment, and cause confusion. Depressants are the opposite of stimulants, Stimulants accelerate different parts of the body while depressants slow them down.…
Phasic receptors, such as lamellar and tactile corpuscles, can adapt rapidly to a stimulus. This adaptability is desirable, as general touch receptors functionally do not need to remain activated. When contact is made, action potentials are generated at an increased rate. They slowly decrease as the stimulus remains constant, resulting in decreased awareness of the stimulus. When the stimulus terminates, action potentials are increased again and awareness of the ending stimulus is regained.…
In order to fully grasp the concept of the color visual system, one would need to understand the psychobiology and cognitive theories. Psychobiology is used to examine the relationship between the brain and mind. While the cognitive theory emphasizes mental processes involved in numerous actions, such as remembering, solving problems, and thinking. In short, the eye takes in light rays and converts them into electrical and chemical signals that are interpreted by the brain to form physical images. This process requires communication between the eye, a sensory organ, and brain, the core of the central nervous system.…