The average filling pressure of the circulatory system depends on []
A. The average arterial pressure
B. circulating blood volume
C. The degree of vasomotion of blood vessels
D. The ratio of blood volume to blood vessel volume
E. The size of blood volume velocity
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Keep the functional state of the body relatively stable, depending on the internal []
A. Non-automatic control system
B. negative feedback control system
C. positive feedback control system
D. feedforward control system
E. Autonomic nervous system
The internal environment of the body refers to []
A. Body fluid
B. Intracellular fluid
C. Extracellular fluid
D. Blood
E. Tissue fluid
When animals see food, they cause saliva secretion, which belongs to []
A. Unconditional reflection
B. Non-automatic control
C. Positive feedback control
D. Negative feedback control
E. Feedforward control
The basic condition for stimulation to stimulate is to make the transmembrane potential reach []
A. spike potential
B. threshold potential
C. negative posterior potential
D. local potential
E. positive posterior potential
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