Refer to This Figure to Determine Which of the Following

question 24

Multiple Choice

Refer to this figure to determine which of the following statements is correct.

• A) Lamellae bring air within diffusing distance of each body cell.
• B) Oxygen diffuses out of blood as it flows through lamellae.
• C) Blood and water are flowing in the same direction (concurrent).
• D) Blood and water are flowing in opposite directions (countercurrent).

---

Definitions:

Variable

A measure that can change from time to time or from observation to observation.

Causality

Describes a relationship where one event (the cause) directly affects the outcome of another event (the effect).

Normative Question

Involves value judgments about what ought to be and discusses what should be done based on subjective criteria.

Regressive Nature

Regressive nature typically refers to a situation or policy that disproportionately affects those with lower incomes more adversely than those with higher incomes.