Question

Which organ system is not primarily involved in external exchange?a. respiratoryb. digestivec. urinaryd. circulatory

Answer 1

Answer: D. Circulatory

Step-by-step explanation:

Respiratory:

You breathe oxygen in and release other gasses out.

Digestive:

You eventually excrete what you ate.

Urinary:

You eventually urinate the fluids you intake.