At short focusing distances, ciliary muscles contract causing the suspensory ligaments to tighten.
The ciliary muscle is an integral muscle of the eye that is constructed as a ring of smooth muscle in the middle layer of the eye, the uvea (vascular layer). It regulates the passage of aqueous humor into Schlemm's canal and governs accommodation for observing objects at different distances.
A suspensory ligament is a ligament that provides support to a body part, particularly an organ. The suspensory ligament protects the fetlock from hyperextension (i.e., falling too low) during exercise. The ligament begins in both the fore and hindlimbs at its connection to the back of the upper cannon bone.
When the ciliary muscle relaxes, its diameter increases; when the suspensory ligaments tighten, the lens becomes thinner. This occurs when concentrating on a celestial object. When the ciliary muscle contracts, the lens becomes much more circular and has more focusing power because the pressure on the zonular fibers is reduced. When the ciliary muscles relax, these fibers contract, pulling the lens out and creating a flatter shape with less focusing power
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Answer:
In the food web energy is being directly transferred from "one organism to another."
Explanation:
In the food web energy is being directly transferred from one organism to another. Plants utilizes the sunlight during photosynthesis and are able to prepare there own food.The organisms those who obtained the energy and utilized it from sun are the producers. The food web has various other parts like, The sun which gives the sunlight are being utilized by the plants for production of the food, next are the producers, after that comes the consumers who takes the energy from the producers and in the final their comes the decomposers.
Answer:
negative response
Explanation:
There exists three types of responses to a certain stimuli, a positive, negative, or ignoring. A positive response is when the subject is attracted to the stimuli, while a negative response is when the subject wants to avoid the stimuli. Therefore in this situation we can say that this is a negative response when the mouse hides. In this case the hawk flying over is the stimuli and the rat is trying to avoid the hawk by hiding.