Question

which of the following statements accurately describes the movement of water and waste within a nephron?

water and waste both filter through the glomerulus; additional water is later secreted from capillaries.

water and waste both filter through the glomerulus; water is later reabsorbed from capillaries.

only waste filters through the glomerulus; water is secreted by capillaries along the length of the nephron.

only water filters through the glomerulus; waste is secreted by capillaries along the length of the nephron.

Explanation:

In nephron function, both water and waste (e.g., urea) are filtered from blood into the Bowman's capsule via the glomerulus. Later, most water is reabsorbed back into capillaries (peritubular capillaries) from the renal tubules to maintain homeostasis. Secretion typically involves waste products, not water, and only water/waste filtering through the glomerulus is correct.

Answer:

Water and waste both filter through the glomerulus; water is later reabsorbed from capillaries.