Question

what is an example of the endocrine system directly interacting with the circulatory system? the brain sensing a decrease in oxygen levels due to a slow breathing rate; digested nutrients being transported to body cells; goosebumps on the skin when the body senses cold temperatures; the hormone adrenaline causes an increase in heart rate

Explanation:

1. Analyze each option:

• Option 1: The brain sensing oxygen levels involves the nervous system (brain) and respiratory system, not endocrine - circulatory direct interaction.
• Option 2: Digested nutrients being transported is related to the digestive and circulatory systems, not endocrine.
• Option 3: Goosebumps are a response of the integumentary and nervous systems to cold, not endocrine - circulatory.
• Option 4: Adrenaline is a hormone (endocrine system), and it causes an increase in heart rate (circulatory system function), so this shows a direct interaction between the endocrine and circulatory systems.

Answer:

D. The hormone adrenaline causes an increase in heart rate