Which type of secretion has an extracellular effect such as the digestion of food?Multiple choice question.EndocrineExocrine

Step 1: Break Down the Problem

To determine the correct type of secretion that has an extracellular effect, we need to understand the definitions of the given options: endocrine and exocrine.

Step 2: Relevant Concepts

1. Endocrine Secretion: Endocrine glands release hormones directly into the bloodstream. These hormones travel throughout the body and can affect distant organs or tissues.

2. Exocrine Secretion: Exocrine glands secrete their products (such as enzymes) into ducts that lead to external surfaces or cavities. This includes processes like digestion, where digestive enzymes are released in the gastrointestinal tract.

Step 3: Analysis and Detail

• The question specifically mentions "extracellular effect such as the digestion of food". In digestion, enzymes produced by exocrine glands (like the pancreas and salivary glands) are secreted into the digestive tract to break down food into smaller, absorbable molecules outside of the body’s cells.
• In contrast, endocrine secretions do not involve direct secretion into digestive environments and thus do not have an extracellular effect on digestion.

Step 4: Verify and Summarize

Based on the definitions laid out and the analysis of the functions of the two types of secretion, it is clear that the type of secretion associated with the extracellular effect and relevant to digestion is exocrine secretion.

Final Answer

Exocrine