Answer: Duffusion B. Hope this Helps bro
Explanation:
Generally, the excretory system of the chickens is actually a biological system that usually removes excess of unnecessary materials from the body of the chicken. A function that eliminates the waste product of metabolism in the body such as liquids or gaseous wastes like urine, sweat and exhalation, these substances are usually toxic for the chicken body. There are only several organs that are considered part of the excretory system. It has also said that the system had a closed relationship with temperature in the body.
Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secreted by the thyroid gland and sets into motion responses to lower the blood calcium back to the set point. If the blood calcium level falls below a set point, the parathyroid gland secretes parathyroid hormone that sets into motion responses to raise the blood calcium. These homeostatic responses are examples of:
a. positive feedback
b. effectors
c. sensors
d. negative feedback
Answer:
d. negative feedback
Explanation:
Negative feedback responses are the ones that counteract the change. Any alterations in the internal body conditions such as blood calcium levels are sensed by receptors. The information is sent to the brain which in turn commands the effectors such as endocrine glands to secrete the required hormones to restore the normal conditions. Here, changes in the calcium levels are counteracted by the secretion of calcitonin and parathyroid hormones and the calcium is maintained within a narrow range. This represents negative feedback.
Colonial species are together
