Why is adrenaline helpful in sending more blood to muscles during fear?
Answer and explanation
Correct answer: So muscles can get more oxygen and energy for quick action
The governing concept is hormonal coordination during the emergency or “fight-or-flight” response. When fear occurs, adrenaline increases heart activity and redirects more blood toward skeletal muscles. This supplies additional oxygen and glucose for rapid contraction and action. Therefore option A is correct. The other options describe photosynthesis, an impossible blood-sugar effect, or vision, none of which explains adrenaline’s muscular response.
Frequently asked questions
What is the correct answer to this question?
So muscles can get more oxygen and energy for quick action
Why is this the correct answer?
The governing concept is hormonal coordination during the emergency or “fight-or-flight” response. When fear occurs, adrenaline increases heart activity and redirects more blood toward skeletal muscles. This supplies additional oxygen and glucose for rapid contraction and action. Therefore option A is correct. The other options describe photosynthesis, an impossible blood-sugar effect, or vision, none of which explains adrenaline’s muscular response.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
