Vital capacity is reduced in pulmonary restrictive disorders, but normal in obstructive disorders.

Answer the following statement true (T) or false (F)


True

Anatomy & Physiology

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An action potential on a neuron develops when

a. threshold voltage is reached on an axon b. voltage-gated Na+ channels open c. spatial or temporal summation of graded potentials occurs to a great enough degree d. the axon hillock reaches threshold voltage e. any of the above events occur

Anatomy & Physiology

Which of the following hormones causes water retention by the kidneys in times of dehydration?

A. Glucagon B. Adrenal androgens C. ADH D. PTH E. Somatostatin

Anatomy & Physiology

People with diabetes mellitus have polyuria because they ________.

A. drink a lot of water B. have inadequate amounts of aldosterone C. have greater oncotic pressure in the kidney tubules D. have inadequate amounts of ADH

Anatomy & Physiology

Hyperpolarization of a neuron results from

A. the entrance of either sodium or potassium. B. the entry of any ion. C. either the entry of an anion or the exit of a cation. D. either the entry of a cation or the exit of an anion.

Anatomy & Physiology