1. Multiple-choice questions (this question consists of 25 small questions, each with 2 points, a total of 50 points) 1. The following statement about the environment inside the human body is wrong () A. The specific binding of antigen and antibody occurs in the internal environment B. The internal environment contains CO2, urea, neurotransmitters, etc. The difference between the amount of tissue fluid infiltrating back into the plasma and the lymph is large. When the composition of plasma is stable, the body reaches steady state analysis: choose D. The amount of tissue fluid infiltrating back into the plasma in the human body environment is far greater than the amount of infiltrating into the lymph; CO2, urea, neurotransmitters are all components of the internal environment. The steady state of the body refers to the relative stability of the composition and physical and chemical properties of the internal environment. Only the components are stable, and the body does not necessarily reach the steady state. So D is wrong. 2. The figure shows the partial regulation mechanism of the steady state of the internal environment. The following table states that the error is ()
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