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Question One The urine follows a certain order before its excretion. After the secretion of urine by the kidneys, it is conveyed to the urinary bladder by the ureters. In the urinary bladder, the urine is retained for some time the walls of the urinary bladder have the capacity to expand and contract in order to allow holding and releasing of urine (Hudson, 2006). When the time of releasing urine comes, the urine is discharged from the body through the urethra. The discharge of urine from the bladder is usually under voluntary nervous control. Question Two The food pyramid is remarkably vital in keeping the body healthy and maintaining the body processes. The food pyramid comprises of grains, vegetables, fruits, fats and oils, milk and dairy products, meat, beans, fish and nuts. All these fall into six categories, where five groups represent food while the sixth group comprises of fats and oils. These food groups are usually broken down to provide energy for the body processes. The body cannot function well without the required energy hence, without the breakdown of these food substances, the body functioning will be affected adversely (Watson, 2004). Besides, the breakdown of thes

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