Occupational therapists work with seniors in different settings including assisted living facilities, nursing homes, adult day care centers and community senior centers.A therapist always begins with an evaluation to determine what difficulties a person might be having that interfere with independence.egardless of the patientâs stage of Alzheimerâs disease-occupational therapists are a great resource for caregivers who want to learn how to interact with and enjoy activities with a loved one. Written by occupational therapist Barbara Smith.
Excretion and the liver Excretion in mammals Excretion is the removal of potentially harmful or toxic substances from the body. These substances are usually waste materials produced by complex chemical reactions taking place in living cells. Enzymes catalyse the reactions.
Some of the most toxic waste substances produced by metabolism are small nitrogen-containing compounds called nitrogenous wastes. About 50 % of nitrogenous waste is urea, a by-product that is produced when protein is broken down by the body.Protein is broken down into amino acid and some of it forms ammonia, which is very toxic. The liver, however, quickly converts it to urea, which is a less harmful waste.bout 50 % of nitrogenous waste is urea, a by-product that is produced when protein is broken down by the body. Protein is broken down into amino acid and some of it forms ammonia, which is very toxic. The liver, however, quickly converts it to urea, which is a less harmful waste.