There are two mechanisms by which this occurs. The first is called the myogenic mechanism. The second mechanism is called the tubuloglomerular feedback. So, option b and e are the correct answers.
Renal myogenic mechanisms are part of the autoregulatory mechanisms that maintain constant renal blood flow under various arterial pressures. Simultaneous autoregulation of glomerular pressure and filtration indicates regulation of preglomerular resistance.
Tubuloglomerular feedback is an adaptive mechanism that relates glomerular filtration rate to salinity in the tubular fluid of the macula compacta. A high proportion of [NaCl] and reabsorption at this site constricts afferent arterioles and reduces GFR.
In this mechanism, termed tubuloglomerular feedback (TGF), an increase in NaCl concentration in the macula densa constricts glomerular afferent arterioles, reducing single freon GFR. Along with myogenic responses, TGFs contribute significantly to renal autoregulation.
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