题目内容

The length of time it takes to complete a reflection depends on()

A. How strong or weak the stimulus is
B. The sensitivity of the effector
C. The sensitivity of the receptors
D. Number of synapses passing through the center

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The function of parathyroid hormone is to regulate

A. sodium
B. potassium
C. calcium
D. magnesium

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Glucose enters the red blood cell from the extracellular fluid()

A. Simple diffusion
B. facilitated diffusion
C. active transport
D. endocytosis

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Tidal volume is 450 ml , respiration rate is 14/ min, then the ventilation volume is()

A. 3000ml
B. 3800ml
C. 4500ml
D. 5400ml

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The primary force of lung ventilation is()

A. The pressure difference between alveolar gas and the atmosphere
B. Rhythmic contraction and relaxation of respiratory muscles
Changes in pulmonary pressure
D. Changes in intrathoracic pressure

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The length of time it takes to complete a reflection depends on()

A. How strong or weak the stimulus is B. The sensitivity of the effector C. The sensitivity of the receptors D. Number of synapses passing through the center

The function of parathyroid hormone is to regulate

Glucose enters the red blood cell from the extracellular fluid()

Tidal volume is 450 ml , respiration rate is 14/ min, then the ventilation volume is()

The primary force of lung ventilation is()

A. How strong or weak the stimulus is
B. The sensitivity of the effector
C. The sensitivity of the receptors
D. Number of synapses passing through the center