Atrial natriuretic peptide causes which of the following effects in principal cells?

A) increase in glomerular filtration rate
B) efferent arteriole dilation
C) afferent arteriole constriction
D) decreased number of open sodium channels in the apical membrane
E) decreased activity of the Na+/K+ pump in the basolateral membrane


Ans: D) decreased number of open sodium channels in the apical membrane

Anatomy & Physiology

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Prominent lymphatic capillaries in the small intestine, which are important in the transport of lipids absorbed by the digestive tract, are called ________.

Fill in the blank(s) with the appropriate word(s).

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What could be a possible cause of bile pigments in the urine?

A) diabetes mellitus B) kidney infection C) hypertension D) kidney stones E) liver disease

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Which sequence correctly illustrates a negative feedback system?

a. input ? negative effect ? output ? change b. external stimuli ? effector ? internal change ? integration c. sensor ? integrator ? effector ? compensatory response d. integrator ? effector ? compensatory response ? sensor e. negative input ? sensor ? integrator ? positive output

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Which organ is not part of the gastrointestinal tract?

A. Oral cavity B. Stomach C. Liver D. Large intestine E. Esophagus

Anatomy & Physiology