Which male reproductive gland is responsible for secreting a milky fluid that nourishes and protects sperm and helps neutralize the acidic environment of the female reproductive tract?

A. Tubular secretion involves the reabsorption of substances from the renal tubules into the peritubular capillaries.: That describes reabsorption, the opposite of secretion.
B. Tubular secretion is a passive process that occurs in the glomerulus, allowing the filtration of waste products.: Filtration in the glomerulus is a separate, largely passive process; tubular secretion is an active transport process occurring in the renal tubules.
C. Tubular secretion is the movement of substances from the blood in the peritubular capillaries into the renal tubules.: This correctly describes tubular secretion (e.g., H⁺, K⁺, drugs) .
D. Tubular secretion primarily occurs in the Bowman's capsule, facilitating the selective reabsorption of essential nutrients.: Bowman's capsule is the site of filtration, not tubular secretion; selective reabsorption occurs later in the tubules.

A. Vital capacity: Vital capacity is a lung-volume measurement (maximum inhale → maximum exhale), not the mechanical action of rib elevation.
B. Expiration: Expiration (quiet) is produced by relaxation and elastic recoil; active rib elevation is not part of expiration.
C. Inspiration: Contraction of the external intercostals (and diaphragm) raises the ribs and expands the thoracic cage, producing inspiration.
D. Ventilation: Ventilation is the overall process of air movement in and out of the lungs; rib elevation specifically describes inspiration rather than the whole process.