Mosensory System Lab Report

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We are able to visualize, feel, smell, and hear the world around us due to a system called the sensory system. All around the surface of our body we have detectors that are known as receptors. These receptors, in the form of cells, are specialized to capture specific forms of energy- whether heat, light, chemical, or mechanical (1). The environmental cues that are detected by our receptors on the surface of our body are then transformed into electrical signals, or nerve impulses, that can be sent to the brain for processing. This ensures communication between the environment and our internal system, specifically, our brain. For instance, if we touch a very hot surface, the receptors on that area of our body recognize that we are touching a …show more content…
In addition, we also tested the sensitivities of touch to various regions of our body to understand the somatosensory system.
Methods:
The procedures on pages 32-38 of the lab manual (1) were followed.
Results
Sketch of the retina:

Calculating the distance from the center of the blind spot to the fovea of my eye: Hi Di Hi 17mm Hi = 4.85mm Ho Do 87mm 305mm
Do is 305mm (12inches)
Di is a fixed distance of 17mm (distance of the lens to the retina)
Solve for Hi (distance from blind sport to fovea)
Ho is the distance from the center of the points to the cross

Labeled diagram:

Diameter of cow eye: ~ 5mm
Diameter of the human blind spot: 1.11 mm
Distance corresponding to the separation of the images of 2 lines on the fovea: 0.008 mm
Distance corresponding to the separation of the images of 2 lines in an off-foveal region: 0.0151

1 We expected the distance of separation to be more in the fovea region than in the off-foveal region because of the density of photoreceptors in the fovea region than that of the off-foveal

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